Kx250f leaking coolant from overflow. Then noticed coolant leaking through the overflow hose.

Kx250f leaking coolant from overflow Is th coolant discolored at all? BTW these bikes were not made to sit idle for very long so keep the air circulating through the radiators or it will boil over pretty quickly. ) Only coolant is outi hear i can just get away with taking the Boysen water pump cover off and then remove the impeller, use pliers to grab the coolant seal, and then just put the new coolant seal in and done. Coolant: 50/50 water/antifreeze mix. Apr 26, 2011 · My 08 kx250f is overheating really bad. May 21, 2025 · Warning lights on the dashboard Leaks in the Cooling System Leaks in the cooling system can also cause coolant to leak from the overflow tank. However i'm wondering if i can get a KDX coolant overflow system to fit on my If it's not happening during idling for very long, and actually doing it during rides check your head gasket for leaks, it will allow coolant to pressurize enough to be forced out the overflow quite violently. - you have a coolant leak, gaskets, which you will verify by checking the oil. The bike will not puke it's fluid out through the overflow unless something is seriously wrong with your cooling system or headgasket. more than once to clear up all the problems i've been having. Also when I drain the oil it is a little milky but barely anything. Find out more about airlock and potential remedies. Concerned that it was the head gasket I performed a leak test at TDC with 1 May 27, 2019 · I have a 2014 kx250f that I trail ride in Michigan with my 11yr old on his klx110. I know the most possible problems are head gasket or radiator cap. Oct 1, 2005 · Have a 05 kxf250, havt had any problems until now. I thought it might have been just full, but Dec 5, 2024 · Is coolant spilling from your overflow tank? Discover the common causes of this troubling issue, from overheating engines to faulty caps. It started something new. I have been told its either needing a new water pump, the jetting is wrong, or it needs a new top end. Jan 17, 2005 · I was wondering, could you take the Coolant overflow/tank off a KLX300 and fit it to a KX250F? Would that help with the cooling problems for those of us who ride tight trails? May 16, 2006 · Every KX250F has a problem with overheating if you let it sit and idle. A leaking head gasket can cause combustion pressure forcing coolant out. I have checked the coolant levels and there has been more s have a 06 KX250F and it just started blowing out all the coolant out the overflow hoses during motos. Every time that I ride my bike, I have a little coolant loss. The head is brand new and I never touched the plug and I was wondering if anyone knows whats wrong, should I tighten it, put gasket maker o 2. This happens about 2 mins after ignition, the coolant is probly 75 degrees, so obviously it is not over heating. Slowly pouring the coolant mix into the radiator usually dispels any air. I mean the coolant in the bike is still full its right be If whitish cotton-like wafts are observed, aluminum parts in the cooling system are corroded. The largest Milwaukee Tool community in the world. Does this mean my head gasket is fine?. Was the coolant leaking out of the overflow? If so it was probably running hot, maybe lean. This is my first bike and after a few rides i had to put more coolant is when my buddy bought his new 07 that same day and still has plenty. Watch as the test reveals a failure, indicating potential engine issues. Any suggestions on what the problem is? Is it normal on a pretty hot day. Ideas? is the impeller NG/head gasket? Bike runs fine when water is replaced and cooled down Quick leak test on a KX250F that didn't go as planned. Blown Head gasket? Cap? I will top off my coolant and then is will just leak out of the overflow hose rather fast. Jan 8, 2013 · As for the coolant out the overflow, that will happen if it sets and idles for a few minutes. That should fill up your system and have a bit extra just in case you need to fill it back up or add more in case you have a leak. Oct 26, 2016 · A thin coolant promoted as a higher performance product put in a system designed for thicker coolant will find every little tiny place to leak. Today I took my 2009 KX 250F out for a ride. Apr 1, 2017 · Ok so I rode my kx around today then I let it idle while I went inside to get something and when I came out there was coolant all over the floor. If the coolant gives off an abnormal smell, check for a cooling system leak. It started over heating. Dealers usually use antifreeze since it's less corrosive than water, and (of course) has a freezing point of well below 0 Celsius. While water from the AC is normal, a Dec 10, 2023 · Originally, Was leaking coolant through the weep hole,Read the manual. Looks like you have milky oil. Short ride (around the property and it is my wifes bike so no rev-limiter riding) a Jul 17, 2009 · Most tracks ban the use of antifreeze since it's extremely sticky and hard to clean up. Every time you crank the throttle back it bogs for a second and then revs up. but when at normal idle nothing flows out. come home and my raidotor is empty. Nov 23, 2023 · So I run a Yamaha but my brother bought a 2008 kx250f. No over pressurizing of the cap, hissing etc. Hi i have a kxf 250 07 and as soon as i start it coolant starts to drip out of the owerflow hose . The easiest and most common problem is silicone or debris plugging up the oil Mar 19, 2020 · After every ride last season I would have to refill my radiators with a decent amount of coolant and when I parked it for the winter, the water pump seal was leaking so I thought I fixed it. May 16, 2006 · Every KX250F has a problem with overheating if you let it sit and idle. Bike is ridden appropriately to keep cool but as soon as it is stopped it start spewing out a steady stream. My 2021 yz250f is leaking tons of coolant out of the overflow hose. Apr 6, 2021 · Is your car radiator suffering from airlock? A malfunctioning cooling system can be terrible for your car. I'm talking, it dumps coolant out til half of it is gone. I can hold my finger over the over flow tube and it builds up pressure. If it's just moisture from sitting, your oil will be clean upon riding it for a good 20-30 minutes. I have an 08 kx250f with a pro circuit t-4, pro circuit water pump. is this correct? or do i have to replace the oil seal while im in there? Jan 14, 2006 · If your oil is coming out of the breather just after you changed your oil what has happened is when filling the motor back up with oil it runs over the clutch and into the breather tube area, it will only maybe leak out for just short time till all is out of the tube. I rebuilt the water pump. Any ideas? Sep 2, 2018 · Hey everyone I do all the work to my own bikes so I am noligable on how stuff works but I just can’t figure out why my 2010 kx250f starts pouring coolant from the overflow hose as soon as the bike starts running. If whitish cotton-like wafts are observed, aluminum parts in the cooling system are corroded. Leaking coolant from the small weep hole on the bottom of the case below waterpump. If it's not happening during idling for very long, and actually doing it during rides check your head gasket for leaks, it will allow coolant to pressurize enough to be forced out the overflow quite violently. I thought maybe the color was letting it idle for Mar 30, 2021 · Over time, sediment that accumulates in your coolant can wear through parts of the radiator, leading to a coolant leak. I took the cap off and kicked it over and the coolant wasn’t bubbling or anything. These bikes run hot and at a prolong idle they will spit coolant. One of the earliest signs is the erratic idling, even when the choke is pulled and the KX 250 is warming up. To burp it you need to loosen a hose or a fitting. Public group 󰞋 21K Members Kx250F|Kx450F Owners Alex Kosier󰞋Mar 7󰞋󱟠 how do i tell if the headgasket is bad or the waterpump seal , coolant in the oil ive had the engine apart like 5 times now and cant find nothing wrong im at a loss here Joaquin Palomares 1 󰤦 6 󰤧 Pat Swann A bad headgasket has a few symptoms such as pressurized cooling system, hydro locking the engine and I've got a 2006 KX250F and I ride in a lot of tight woods. Aug 2, 2021 · You can change to Evans coolant to help prevent the boiling issue, but all you are doing is allowing your engine to get hotter before the coolant boils, same as installing a higher pressure cap. Not sure if this is the right community but I couldn't find a better one. Because I never really get to get much of 2nd gear,, it is causing my radiator overflow to lose coolant. Appears like oil residue in your photo, any coolant in the bottom of the oil dump? Hi, I have a 2005 kx250f and it has a fully rebuilt motor and as I was checking valve clearances I noticed that the coolant plug inside the head was leaking. If there are hoses or fittings higher than the radiator opening there's potential for air to become trapped. Everytime i look to see how much coolant i have in my bike, it gets lower and lower. I've seen header pipes on 4 strokes glow red before so that's somewhat normal but with the backfiring and coolant overflow it would deserve some more investigation. He pulled the hot start not knowing when it was running and it shot a bit of coolant out through the overflow. I took my new to me bike for a ride yesterday. After the ride I noticed it was leaking coolant out of the overflow and there was milky oil coming from the breather hose. “Ahh. . Like some said to do, realized. So what's going on right now is in noticing coolant coming out of the pin hole underneath the water pump cover. com/Learn How-To Repair and Maintain your own Motorcycle! I'm new to the new bikes just bought a 12 coming from a 06 After idling for a while the bike seems to leak green fluid (coolant) from the bottom is this normal? BRAAAAP yes it's coming from the radiator overflow tube. Customer: I leak coolant out of the overflow when my bike is running Mechanic's Assistant: That sounds frustrating. . 2 Liters or 1. Not a few drops but like a puddle. I have been riding it for almost 10 hours now and I just went to warm up the bike to change the oil and noticed coolant coming out of a 1/4" hole that is just below the i Aug 8, 2012 · Hey there people of TT, I just bought a 2012 KX250F last week, it has not been fully ridden on track for a break in i start it up for 5-10 mins everyday after school, but after about 2 minutes of idling it start to drip coolant furiosly. 334-520-9460 is my number call/txt anytime or just write me on here, thanks! Click to expand Presented by Dennis KirkWelcome to this installment of our latest feature, the Dennis Kirk Tech Tip. I have no clue what could Mar 2, 2025 · A coolant leak in your Chevy Trax can be a frustrating and concerning issue. I drained the oil only to find dirty oil. Apr 7, 2009 · If you flush the entire system and replace the fluid, you should get a 64 oz. I recently changed the seal for the water pump and redid the top end gaskets and just cant figure out how coolant would get in the oil. If you have any suggestions please let me know. I bought a new radiator and it does the Jun 27, 2014 · Hello guys, My bike seem to take coolant and oil, the probleme is that it's not burning it, It's dripping by the overflow. OR by grace of luck it is simply venting off excess volume from being a bit overfilled. Not exactly sure what I'm looking for but didn't see much wrong. Jan 15, 2017 · On my Kawasaki the coolant overflows during the engine is working. Before opening the top end I would like to check the radiator cap. They'll overheat pretty quick if they're not moving. Or check to see your radiator fins and tubes are not bent and clean, no mud packed in between. Aug 21, 2006 · A couple things to look for: a leaking head gasket will allow cylinder pressure into the cooling system blowing coolant out the overflow. However i'm wondering if i can get a KDX coolant overflow system to fit on my Discount Radiator Leak Sealer Dovewill Coolant Radiator Reservoir Tank PP Engine Coolant Expansion Reservoir Overflow Tank For Vw Automobile Repairing Accessory Nov 2, 2004 · Then it started leaking coolant like crazy out the radiator overflow tube. Anything I should watch out for or be concerned about? Clamp didn’t feel loose. Often, you’ll find coolant residue around the tank or a puddle beneath it. its defently coolant, but i dont know how its getting in there?? i dont see how a head/base gasket would allow it to leak into the spark plug h Apr 28, 2004 · i recently bought a used kx250f from a freind that raced it last season right when the bike first came out. Good luck! when you top up the coolant make sure that its not to full. When you notice clear fluids leaking from the front of your car, it’s important to identify the source promptly to avoid potential damage. I have a hi pressure cap,I’m not blowing white smoke so it’s not my head gasket ,and Aug 7, 2007 · badzter Posts: 7 Joined: Tue Aug 07, 2007 12:32 pm Leaking coolant from overflow tube (Problem solved!) by badzter » Tue Aug 07, 2007 7:11 pm Hi guys! I hope you can help me with this problem (btw I've searched the forum) I started to notice a decreasing coolant level about a month ago. I replaced the head gasket and still it runs coolant out with reving the bike. Here's how to replace your stock coolant with distilled water or, better yet On many of the newer model KX450 bikes, there is a common issue of oil leaking from breather, or being pushed out. Jan 31, 2024 · 14 250, has 10 hours on engine rebuild, has been leaking coolant out of the over flow everytime I ride it and now today it was getting hot, not sure Mar 5, 2013 · I thought it was just an overflow issue, but it didnt happen the first time upon starting it up when i added oil after putting the stator case back on. It’s not just about the inconvenience of topping off the fluid; it signals a potential problem that, if left unaddressed, could lead to more serious engine damage. I guess it might be time to look at the valve clearance ok after some obervations the header will start to glow after 2 mins from start up while idle . Is this normal for the kx250fs, its an 08. You can maybe get a water wetter coolant additive like Royal purple or redline etc so your bike runs a bit cooler. Everything is fine when I ride it's only when it idles Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. As soon as I start it it just pours coolant out of the overflow tube. Do they run hot? Oct 23, 2012 · This is an issue on all modern 4 strokes basically, they need air flowing thru to keep it cool enough not to leak. The bike is not hot. (2 quart) container of coolant. However today I took the bike for a test ride and after less than 5 minutes I checked the radiators and th Jul 19, 2009 · A couple of weeks a go I went for a ride on some real gnarly trails, there were huge bog holes, deep river crossings etc. I will ride for about ten minutes in cold weather (around 35 degrees F) then the coolant starts to boil and flows from the overflow tube. Check the tank for any visible cracks or signs of leaking. Vacuum Leaks in the Air Intake Manifold Riders of Kawasaki KX 250s from the early 2000’s sometimes report problems with their motorcycle’s idle staying high after revving, failing to rev back down to idle. Later i started it up again with a little more coolant in, this time it didn't Apr 24, 2013 · http://www. ? PLEASE HELP!!! Jun 26, 2023 · Hi all, quick question is it normal for my kx450f to dribble coolant out overflow hose once warmed up abit and idling? Doesn't seem to loose much via checking radiator. Jul 16, 2022 · I'm not super familiar with KXF's, but if its not getting in through the head, then one of the seals between your engine and coolant passages is leaking, I would start with the waterpump seal, I've had a few go bad on my other bikes. Visually inspect the hoses for signs of deterioration. What might cause this to happen? Apr 29, 2015 · So I bought this 08 kx250f and it was all good, I did a oil change today and filled it up to halfway up the sight glass and started it up, and almost right away it started spitting out oil from what I think is the overflow tube (pretty large tube that's alone) and it was spitting pretty hard and Oct 3, 2024 · I was wondering if anyone knew where I could start with finding how my coolant gets to my oil. It does not seem to be burning coolant. Has anyone had new gaskets that were faulty? or cracked heads? This happens right after startin every time i go to glamis or where my bike has to work hard, i always drip prolly about 2 cups of coolant, last time i overheated so thier time i threw in some water wetter and it didnt overheat but i saw coolant dripping and i got mean engine knock, i remember seeing an overflow bottle kit but i Mar 10, 2011 · i lately added a coolant catch bottle from a kdx220 and a 1. I turned off the bike for a while waiting for the bike to cool down. But just purchased a 08 250f that was just rebuilt by the previous owner. Sharing tips, info, quality promos we find, reviews, how-to's, "new tool day", pics of your tools and projects. If it's still leaking, and the new head gasket is the problem, it could possibly be a warped head. Say about 100 Degrees for my 08 to be spitting out some coolant after I kill the bike? After say a 20 minute ride? My 04 is constantly leaking coolant out the overflow tube. The temp tape I have on the radiator does not show overheating. I took the water pump and case cover off. Also, check the little hole under the water pump. This comprehensive guide aims to provide an expert perspective on why your Chevy Trax might be leaking coolant, helping you understand the common causes 2. During idle, it doesn't overflow or VERY little. These leaks can occur in various components, including hoses, radiators, and engine blocks. Jul 9, 2025 · In this article, I'll cover the most common problems that cause coolant to come out the overflow on a dirt bike, why it happens, as well as how to fix it and prevent it from happening again. When you start the bike, It start pushing coolant out the overflow. 6 cap, etc. Inspect your vehicle’s cooling system for signs of leakage, such as rust, corrosion, or oil stains. Sep 18, 2007 · Are you sure the water is coming from the overflow? I had a tiny leak in my radiator on a kx250f that did not leak until the bike was warm, but then you could barely tell it was leaking. I've read something about the waterpump o-rings? Any ideas? Mar 24, 2022 · The overflow is only for liquid expansion at operating temperature and a little buffer for small leaks, what you're "probably" experiencing is combustion pressure from head gasket failure forcing the cooling system weak point to burst. If the coolant is brown, iron or steel parts are rusting. I have one which is from my previous bike(it was working - I have broken the radiator and bought Jun 19, 2012 · If it did this out of the blue (you haven't touched the cooling system recently), then you probably have a blown head gasket (do a compression test or leak down). 6 radiator cap (from 1. The seals on the wrong side” we put the seal behind the impeller, now it leaks oil through Just picked up a kx450 that needs alittle love it’s leaking coolant out of the spark plug weep hole any ideas where to start looking before I tear the top end off it. It was full the other day and then after a long ride today I came home and was about to shut my bike off and saw that it was dripping alittle from the overfill hose. 334-520-9460 is my number call/txt anytime or just write me on here, thanks! Click to expand Oct 2, 2022 · You can start by having simple things put on like a radiator overflow tank so if it boils out of your radiator some coolant will get sucked back in your radiators later when it cools. Aug 1, 2008 · I recently bought an 06' KX250f that just had the top end redone as well as a new head gasket because the bike got overheated. Obviously now it's low on coolant. Sep 27, 2008 · My coolant keeps dripping out of the overfill hose near the radiator cap. Dec 6, 2010 · My 2009 KX250F is leaking oil out of the weep hole. We have shared the details causes of coolant coming out of overflow tube. My mate advised me to take my overflow pipe and re-route it so its up high by the airbox (still facing down though) incase I stalled in deep water. I suppose the only thing is that my needles aren't adjusted correctly with my floats. I have yet to drain the oilt o see if there is coolant in it to check to see if it was a blown head gasket. I lost fluid from overflow since I tightened The hose and t Hello everyone I recently bought a 2024 kx250f, it has maybe 1. You shut it off and let it cool, should be fine. Nov 3, 2020 · I'm no 4 stroke guy but I'll give it a shot. and everything is clean and shiny. Replace stock cap with a CV4 with higher relief pressure Oct 1, 2010 · guys i noticed the other day when i started up my bike that there wa s some coolant coming out the weep/drain hole that comes from the spark plug cavity. Anyone know what this means? Aug 17, 2011 · On a side note if you had a blown/leaking head gasket you would probably be expelling white smoke out of the exhaust. My 2011 kx250f runs fine and starts easy but after it warms up it starts leaking coolant from overflow. The oil is clean no coolant in it and doesn’t Oct 14, 2022 · 1. Jul 13, 2018 · The title of the thread indicates the coolant is coming out of the overflow hose, but the description sounds more like its just emptying into the system as air is purged out. This comprehensive guide helps you identify symptoms, inspect your cooling system, and take proactive steps to maintain your vehicle's performance. I’m assuming I just need to take that side case off and there’s a oring? Any help would be appricated Aug 8, 2012 · Hey there people of TT, I just bought a 2012 KX250F last week, it has not been fully ridden on track for a break in i start it up for 5-10 mins everyday after school, but after about 2 minutes of idling it start to drip coolant furiosly. Nov 12, 2011 · Either get a pan of water and thermometer to test the opening temperature of the thermostat or buy a new thermostat. Feb 22, 2025 · The expansion tank, sometimes called the coolant reservoir, holds excess coolant. also if it's pushing pressure into the cooling system you could take the rad cap off take a plastic bag seal it over the fill neck [you also need to seal the overflow tube] and it will start to inflate the bag probably rather Sep 9, 2024 · Discover the 6 common car radiator airlock symptoms. Let the bike cool down and then check the fluid level in the radiator. I took the spark plug out it is soaked in oil. I’d expect it to belch out overflow tube into frame gusset. Unaffiliated w/ Milwaukee Tool or TTI; we're started/run by owners, for owners. Open to all, whether it's your hobby or profession. My son's 07 kx250f has a problem. I might need a higher pressure radiator cap. I noticed the radiator was steaming and the coolant overflow was letting out some coolant (about 100ml). If you ride it and the oil is still milky I'd change the head gasket. Water pump maybe failing causing overheating. Oct 22, 2023 · 19K Members Peter Martens Kx250F|Kx450F Owners Oct 22, 2023󰞋󱟠 Would a bad head gasket cause coolant to leak out of the overflow it only does it when i really rev the bike up and build alot of pressure Austin Szoke 󰍸 1 󰤦 16 󰤧 Ben Wynn It could, but more likely is just a bad radiator cap if bike will re start after engine is warm 2 yrs Peter Martens 󱐭 Author Ben Wynn I just Oct 13, 2011 · #2 there is oil leaking from the crank case overflow #3 the oil is milky i bought this for a few hundred bucks, just trying to get it right. Doesn’t leak when cold and leaks more when revved. When was the last time you had your bike's cooling system checked or serviced? Customer: the motor was rebuilt 25 hours ago so besides the radiators it was done 25 hours ago Mechanic's Assistant: Have you noticed any other issues with the bike's performance or strange noises Oct 1, 2018 · Okay Kawasaki guys I have a 2016 Kx250f that is using coolant. What would cause this? Ive did some searching and seen that maybe a bad head gasket could do this but would like to ask if anyone has ever heard of anything like this befo I have an 09 kx250f with coolant in the oil what’s the best way to figure out what ls wrong Discussion about diagnosing and fixing coolant in oil issue in a 2009 KX250F motorcycle Like,Comment,Subscribe And Turn On Post Notifications GIVEAWAY AT 1K SUBSCRIBERS!!!!IF you Like My Content Leave A Comment down below Tell Me Why You Like My Oct 14, 2011 · #2 there is oil leaking from the crank case overflow Are you referring to the breather hose that comes out the bottom of the bike with the carb overflow hoses? This is typically a sign that you overfilled the oil. Sep 19, 2011 · Lately I have leaking a lot more fluid out of the radiator overflow. So I sat there watching my $5700 bike brand new pour anti freeze like it was a water fountain ( NEW I should have got a yamaha!!!) Jun 15, 2020 · 06 kx450. High idle revs on a KX 250 indicate a vacuum leak in the air intake system. So I sat there watching my $5700 bike brand new pour anti freeze like it was a water fountain ( NEW I should have got a yamaha!!!) Jul 7, 2009 · i got a 06 yz450f i picked up used,everything seems to run perfect and smooth but yesterday i was giving it a good beating in the woods for about 30minutes straight when i stoped to do a clutch adjustment when i noticed some anti freeze coming out of the overflow line for the radiator???i took it Jun 25, 2004 · I've still got gas leaking into my air box after hooking the vaccuum hose up from the petcock to the carbs, and i've cleaned the carbs thuroughly. 5 hours on it so far but today I started it up and let it sit there and warm up for about 5 minutes before I started riding, I noticed some coolant start to come out of the overflow tube below it, is this normal or? In this video, you'll learn: -The most common reasons why your dirt bike is leaking coolant, whether it's a 2 stroke or 4 stroke -What's causing it to happen -How to easily fix or prevent it Nov 9, 2014 · Coolant was full, 2 laps in noticed the crankcase was very hot through my boots. Mar 10, 2011 · i lately added a coolant catch bottle from a kdx220 and a 1. Are you losing coolant externally as well? Or is it just into the engine oil? Im new to the 4 stroke world. Just done my first service after full engine rebuild from a shop, noticed coolant leaking from this hole when warming up bike, haven’t lost any coolant lst few rides. In this episode, Donn Maeda walks through replacing the Oct 2, 2022 · You can start by having simple things put on like a radiator overflow tank so if it boils out of your radiator some coolant will get sucked back in your radiators later when it cools. In either case, flush the cooling system. 1) on my 2004 model. anyone have this happen? Apr 22, 2009 · Anyone have coolant leak out where hose goes into left side of cylinder? I did top off recently. As soon as I hit the gas again it spits out. Apr 14, 2008 · Sounds like it just got too hot and spit the coolant out of the overflow. Anyhow, when i fire the bike up after i top off the coolant, and the bike begins to warm up Coolant excessively pisses out of the overflow tube as if my radiator cap isnt on all the way. Learn how to address leaks, monitor temperatures, and know when to seek professional help to prevent major Oct 13, 2011 · #2 there is oil leaking from the crank case overflow #3 the oil is milky i bought this for a few hundred bucks, just trying to get it right. 04, 05, and 06, it don't matter if you use the boyesen water pump and impeller, engine ice, larger radiators, fancy hoses, 1. i still need to move the bottle around more so it isn't blocking air at the radiator. A quick tutorial on how to change the coolant on a 2016 Kawasaki KX250F or similar dirt bike. But never had leak out of hose. Dec 26, 2016 · 2014 KX250F I just rebuilt my head and noticed it spits out coolant out of the overflow when I hit the gas. I was told it was my head gasket leaking, so I went through the motor and replaced everything, top end, cl Oct 23, 2012 · This is an issue on all modern 4 strokes basically, they need air flowing thru to keep it cool enough not to leak. Has anyone had new gaskets that were faulty? or cracked heads? This happens right after startin every time i go to glamis or where my bike has to work hard, i always drip prolly about 2 cups of coolant, last time i overheated so thier time i threw in some water wetter and it didnt overheat but i saw coolant dripping and i got mean engine knock, i remember seeing an overflow bottle kit but i Sep 24, 2025 · Read How to change the coolant in a 2016 Kawasaki KX250F Dirt Bike on the MotoSport blog and find more expert tips, product reviews and race recaps for each round of Supercross and Motocross. So here is what may be happening. If you are facing the radiator keeps pushing water out, fix it immediately. 3 quartsDra That's the crank case breather hose. The best method to replacing your oil is by measuring it, otherwise keep a steady eye on the sight glass, never go over the top mark. The most common clear fluids are water from the air conditioning system, which is typically harmless and condenses during operation, or coolant, which is usually green or yellow but can appear clear in some cases. If it is leaking coolant you may need to replace the water pump seal (and bearing). Drain oil and coolant and see if you have a mixture. Could just be moisture build-up from sitting or it could be a head gasket taking a poop. The high pressure inside the radiator hose [A] can cause coolant to leak [B] or the hose to burst if the line is not properly maintained. Nov 23, 2022 · The most common causes of coolant coming out of the overflow tank are a broken overflow tank cap, too much coolant in the system, a faulty thermostat that is not opening and allows the coolant to heat up too much, clogged radiator, a blown head gasket, and a faulty water pump. MembersOnline • my kx250f is leaking coolant out of a tube that connects to where the cap is on the top of the radiator, when i give it more gas it seems to come out faster. keep it just above the top of the fins to allow for expansion when it gets real hot. 1. I got a 05 kx250f, and it just started leaking coolant. howtomotorcyclerepair. I have a 08 kx250f that is leaking coolant out the vent tube of the radiator. I thougt I put too much of them but they just doesn't stop even if the level is under the tolerance it will drip, Same thing for the coolant it will drip until there is no mo Nov 2, 2004 · Then it started leaking coolant like crazy out the radiator overflow tube. I'm not exactly sure what the issue is at the moment. Then noticed coolant leaking through the overflow hose. I know its normal for some fluid to boil out but now I'm having to put in about a half cup of fluid after every ride. It’s also possible your radiator cap could wear out and, because your cooling system works under so much pressure, it can cause coolant to leak out the cap. Oct 22, 2023 · 19K Members Peter Martens Kx250F|Kx450F Owners Oct 22, 2023󰞋󱟠 Would a bad head gasket cause coolant to leak out of the overflow it only does it when i really rev the bike up and build alot of pressure Austin Szoke 󰍸 1 󰤦 16 󰤧 Ben Wynn It could, but more likely is just a bad radiator cap if bike will re start after engine is warm 2 yrs Peter Martens 󱐭 Author Ben Wynn I just Mar 24, 2007 · I have a brand new 07 kx250f and this thing leaks coolant like no other. Dec 8, 2023 · Trying to figure out if my head gasket is blown because of dripping coolant. then i go for a 2 hour ride and keeps on leaking . Got it running good and once up to temp (pipes glowing) whenever I rev it up and down coolant flows out of the overflow tube. I believe it is spitting it out the overflow tube. I have been riding longer moto's, usually over 20 minutes but I am concerned something else might be going on. Learn more about the causes and effective solutions to fix airlock issues in your car. Any suggestions on how I can putt around at slower speeds with out overheating? I haven't seen any white smok Sep 26, 2007 · Just had my 06kxf250 motor done stage 2 from pro circuit, bike run great hard to start after it runs a while though, but there's coolant leaking out of the pin hole by the water pump checked the radiator and the coolant is low and it was just topped off any ideas of the problem? I noticed by son's bike leaks coolant out of the overflow tube after he rides for a while. This plastic tank can develop cracks, especially from age or exposure to heat, which can lead to leaks. I did a leakdown test (20% Nov 13, 2024 · Hey all, I just rebuilt the top end on my Kx250f, the bike fired up right away after the rebuild but the shortly after started dripping coolant out of the little hole on the right side of cylinder (clutch side) and when i rev it up it the coolant comes out in sprinkles. I didn't stall in the water I have a 2007 KX250F, it has really low hours, when i start it, antifreeze steadily comes out of the overflow tube - Answered by a verified Motorcycle Mechanic Feb 26, 2018 · Hey guys. I did have a small leak from one of the hoses from the radiator that wasn’t tight. It may be caused by exhaust gas leaking into the cooling system. kzxsnqx rwcig sqro vldj ixn nrll sotmx ayrjcje jqklg axp zkeoqz vhdg mvoij bhfau rhug