CRF 450 / 250 Weep Hole Coolant / Oil Leak Fix
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- Опубликовано: 11 сен 2024
- ***** NEW VIDEO, UPDATED AND IMPROVED, INCLUDES COOLING SYSTEM MODIFICATION! PLEASE CLICK LINK HERE TO GO TO IT: • CRF 450 / 250 Coolant ... *****
I have just left this video up as I feel it is a main traffic source for people who are looking for help on this subject.
Got a new bike! It leaks though, after several hours and several seals, I got it all figured out. Hope this helps, if you have any other questions I will happy to answer them! Let me know if this was helpful.
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I saw your other video which answered exactly
That. Thanks so much!
Thanks for the video, Mine just started leaking lastnight at the track.
No problem, hope the video helped, might be a good idea to replace the counter balancer while you're at it, there is another video of that on my channel.
You ride a CRF450R? ruclips.net/video/-HKZ7ffScKE/видео.html
Good stuff, thanks for the vid bro. Just picked up a CRF also and I think they installed that seal backwards as well. Only leaks while running, fine when sitting.
REKX, you are killing it with the views! HOW??? I just made one and only have 22 views lol Anyways, thanks for your video!
ruclips.net/video/-HKZ7ffScKE/видео.html Mine lol
i have a problem with water pump leaking. I changed seals, bearing and shaft and i made 15h with it and yesterday after ride i parked my crf in garage and today i saw water under my bike and i don’t know how is now leaking water from that hole
i just did mine yesterday it took my brother and i hours to do on a 2013 kawasaki klx250s because kawasaki uses an insane design with a mechanical seal that the inner part is ceramic thin outer is metal that literally glues in and doesn't want to come out plus behind it is the oil seal and then bearing for oil pump i wish i would have made a video because theres not 1 video on my bike on how to do it theres other kawasaki ' s with similar design and same principle but still different and it figured it would start leaking out of weep hole just out of warranty since i bought the bike off showroom floor brand new the day it arrived had a great warranty that never even got used which is great but what a waste
Jacob Hayden no way! that's too bad you didn't get a chance to make a video on it. Would've been interesting to see for sure. I'm glad to hear you guys got it figured out eventually though.
Hey bro I got a 2018 crf 250 r and my bike is throwing all the oil out from above I belive it is the air box it has done this twice leaves my motor empty of oil no oil at aoo
It’s crazy I gotta 06crf250r it did the same thing to me today idk what’s the cause at all
@@humbleascanbe2159 yo bro i got your solution the radiator Is dirty drain it of all coolant and run the water hose through the top and let the water drain out throw the bottom gee and fill it up with coolant engine ice and wash the radiator from the outside and also wash your air filter with gas
@@humbleascanbe2159 the cause is the motor is not getting any air so the oil gets too hot and can’t breathe so that’s why the air filter has to be clean and the radiator so it can pass air theough
@@humbleascanbe2159 follow me on Instagram @hammurabivilla
@@jrvilla8020 forsure I’m bout to follow you
So you don’t need a seal for the piece you screw in? Like the case thing you don’t need a seal for that?
Thanks so much man wow
man, thanks for the video, its awesome, my CRF 450 r 2003 started to leak yesterday, i will try what you did
No problem! Glad I could share and help some other people out
@@Ebrakes Bro, i just did it, it worked. Thanks a lot. Great job
@@alextc31 Good to hear man! Thanks!
hey there di you have your crf 450 street legal , if so I have an offer of crf 450r supermoto and street legal,2003 year, guy cleaned carburetor, checked valves and it has 40 hours from motor rebuild. Is it worth it to buy it for some street riding for weekends or should I pass on that?
@@dinsadovic9705 i sold mine bro
You need to definitely pull that casing and replace it all in one go
Was wondering that looked a lil sketch I'm boughta replace mine cause it's leaking from the weep hole but I don't know if I wanna take the crankcase off and replace the bearing and oil seal guess I have to if it has play like that's guys
Thank you so much. My dad and I coudn't find out how to get to the pump seals.
No problem man, thanks for watching and commenting with feedback! I'm glad I could help!
Perseverance! Good job.
thanks for the video bro great help.
David D no problem man, glad I was able to! Thanks for watching my video!
If you still have this problem after the fix, you should check out a video on here CRF 450 COUNTER BALANCER. I had the same problem with an 04 too
So far it has been fine, but if the problem persists, i will check that out.
Thanks!
I still haven't decided if you jinxed me or not, haha, but yeah that stupid leak came back, and sure enough the counter balancer shaft was wiggling.
bro im in the same situation as you yesterday i bought bike everything was fine but when i got home i see leak from the waterpump
So man I have a 06 crf250r it sprays coolant out the wheep hole only when idling but when I rev up or ride it it stops spraying coolant
Hi, I have a chinese motorcycle whose parts are almost same as Yamaha Majesty 250cc, my water pump leaks after after warming(5 minutes starting) then stops and do not leak, and then continues same leak after I start. The leak comes or seems under the water pump or near weep hole, and the leaking is little like 0.5 litres per year maybe... What is the issue if you can help??
My bike seems to spill more then the 2 oz recommended by the manufacturer after I fill it up. I don’t know why that is, anything helps thanks
Every video i have watched the case comes off and both seals get replaced, but if all i have to do is the outer seal then i can do it your way
From what i gathered and from looking at the service manual, only replace the front seal if its leaking just a bit and its only coolant. If you got oil mixed with coolant coming out of the weep hole that means both are shot and need to be replaced.
What is the best way to get the mechanical seal all the way out to get the bearing and seal out?it seems to be stuck in with maybe some sort of adhesive? Do I just pry it out?
Yup!
Just took the outer seal off on my ktm 450 as it was leaking from the weeping hole (coolant) but when I took mine out there was no washer behind the impeller when I did it I’ve also gone through 2 seals so far but I’ve put it on the way it came off and most videos it’s telling me to do it opposite way
My lt250r i just rebuilt drips when the bike is not running? Do I need a new impeller shaft assembly?
Have you ever tested whether it's really worth it to purchase a Dooxi Car Adaptation products?
I missed what did you try?
i have a leak in tat little hole at the bottom of the engine every time i rev my crf450r 2007 model,
reckon i could replace the seal as you do in this video to fix it, cheers
noshame humor I would imagine all the same principles apply, I hope it does indeed help. Thanks for watching!
Good job
l p thanks!
Just bought a KTM exc-250. Didn't notice whilst there buying the bike but when I got home I've noticed I have a leak, I thought it may just be the overflow from the rad and coming down through the frame, thought could be a lose jubilee clip, now on further inspection I've found another nut that looks rather wet and will be checking this out first thing tomorrow. This is my first 4 stroke that I've owned and was told that they get really hot quick if being left to idle for anything over a minute and the way they cool down is to be ridden and that this could course it to come from the overflow? Any other suggestions on things to look out for or look at whilst I'm giving it the once over? Thanks. Great video by the way
ENDURO84 thank you! and it would take more than a minute from start up to come out the over flow... I'm assuming your bike is like most and doesn't have a rad fan? If that's the case then yes sitting still will not provide air flow to cool your coolant, but I would say more like 5 minutes or more for that to happen... Riding it does push air and cool the system. However it would be pretty obvious if it was coming out of the over flow and no where else. Can you be more specific about the bolt that's leaking? Is it the drain plug on the water pump? Let me know where you think the coolant is for sure coming from and I'll do my best to diagnose from there.
Hey I have the exact same bike with the oil overflow plug striped out. Would you recommend replacing the engine casing or re-tap and die it?
John Bar definitely give a new bolt and tapping the threads a try, at the very worst you'll have a tap that you can use on other future things (if you don't already have an entire kit) but replacing the engine case will be costly to your wallet and your time. If the tap fails then youll be forced to buy a new case but I would try a tap first for sure.
Fixing this seal fixed the oil leak also?
Hi, unfortunately the exact story has occurred to me today. Before riding for the first time I had to fill the coolant from almost empty. Anyways, I'm concerned both seals are bad. It Is pissing out bad. Obviously bought a lemon, what should I do? Buy new, inner and outer seal, water pump bearing, water pump shaft, impeller, pump seal, outer crank case gasket and associated bolts seals. Should all oils and fluids be replaced as they might have been compromised? Finally, do I need a press to get the bearing in/out?
+Ryan bell I have been the worst about replying quickly lately, sorry about that first of all! Haven't had access to my computer for a week! But in any case, yes since your at this point, especially if your bike is near the year of mine, replace everything, save your self some trouble and just pay a little money now and do it all...Inner seal, outer seal, pump bearing, pump shaft, counter balancer bearings etc... Sorry to hear about the bike but hopefully this helps! Let me know if I can help in any other way!
It looks like there's a gap in between. The seal and the front inserted metal cap where the spring seal sits in side it looks to be missing sum metal between. The seals ? I dnt wanna rip out spring seal housing. Untill. Ik a new one comes with a new seal on eBay . Plz reply thanks . ALS shaft has groves in it that turns propeller
+Craig Hudzinski I have never actually gotten the chance to take apart an rm125, so I'm not 100% sure what exactly to picture in my mind, missing metal definitely does not sound good though, do you think you could send pictures or make a video of it? I could probably have more of an idea of what is going on then.
the nut in my impeller shaft is really hard to get off as my impeller shaft spins when i try to loosen it off
Kick it With Warbo definitely check out my updated video of this! I go in depth and explain how to take the impeller off, and it will show you how to modify your impeller for added cooling system life. And if you still have questions after that I'll be more than happy to reply too them in the comments section!
1st gear break on
So what was the problem
Great video, helped me alot. Any clue which way the inner seal faces?
Thanks, glad I could help. And yes. It is the opposite way of the outer seal. As you are looking at the inside of the right case cover you should see the lips of the seal. The flat part (back part) of the seal will be pushed into the housing. Does that make sense?
Yes thanks for the help
Hey my CRF250x is loosing coolant from the overflow tank. What could be the problem? Also the little hole at the bottom of the motor had some liquid come out of it. Idk what it is. Its dry and black.
Same thing with my crf450r there is a leak under the motor every time I accelerate, y’all guys think is the seal???
very nice video but I have a question. I have a yz400f my buddy swears you have to replace the impeller and impeller shaft if the seal is leaking I disagree what's your thoughts
never seen a yz400f water pump first hand so I could be mistaken but I think the same basic rule applies to almost all things: condition...if they are both in bad condition then they both need replacing...or any other variance of that situation, if you want complete peace of mind I'd replace both of them but if confident one or both are still in useable condition you can keep it. hope that helps! sorry it's not a more direct yes or no answer but I really think it all depends on your exact situation, let me know if I can help with anything else!
Why were the cases split and then put back? I’m trying to do this job as well but looks like you can take the seal out without splitting the cases
did you figuire it out?
Do u know what is wrong, I have a crf150r and I changed the oil and put a new oil filter in and then I put less oil in the bike then the suggestied amount and when the bike gets warm oil starts pouring out of the overflow. Do u know what's wrong ?
Wyat Staas That is certainly weird, there is definitely a pressure problem somewhere, but I honestly am not sure on this one. Have you done anything else to the engine beside changed the oil? Also I would spend some time looking around on like thumper talk and other forums, there is a good chance someone else has had this problem before. I have never owned the crf150 though... sorry I couldn't be more help.
Also, there doesn't appear to be oil in the coolant that's pissing out. What are your thoughts? Just change the outer?
+Ryan bell If its only coolant, then yes technically only the outer water seal is the problem, but like I said in the other message, since its apart i would really recommend replacing everything, that way you have peace of mind knowing that everything is new and going to last a long time. Also I had a odd-ball bearing failure which led to my water pump leaking again :( but I filmed some new video and will hopefully have time to edit it and post a new and improved video sometime in the near future. It includes a way to modify your impeller for better results!
So you didnt have to take the inner case off??
If you are not changing the oil seal or bearing no, the water seal can be changed just by taking of the water pump cover. Be careful not to damage anything though! And while you can, I really would recommend just taking it all apart and replacing every wear component. Including counter balancer parts.
I reccomending doing both seals like in my video - ruclips.net/video/-HKZ7ffScKE/видео.html
My friend dropped my bike from a stand still he was embarrased picked it up started leaking coolant for less than 4 seconds then it stopped took a look started it back up no leaks no visable damage i cant see how it over heated its a ktm 350 sxf ill take a look after work today hoping it over heated which i really dont know how that would of happened
Jack Qwerty very interesting, could you see where that 4 second leak came from? And first things first, check your coolant level. If it's low then you'll definitely have a leak somewhere. Or how old is the coolant? You could have some gunk in the radiator blocking flow. Let me know about those two things and I'll see if I can't figure out what's up with your bike.
The coolant is probally a little older im not sure exactly how old i should drain it, it started just dripping i shut the bike off by that time it stopped evrythings so it hot evaporated so i dont know where it came from dripped onto my exaust thats all i know
To check the coolant u open the rad cab supposed to be just over the fins put the cap back on start her up and if u check it again after u filled it its below the fins so u cant see it because it gets rid of the extra as far as i know which its doing everything 100% right im pretty sure, its not leaking at all just for those seconds that it happened
Summed up u cant tell how low it is until u top it off thanks for the info Ill drain that bitch
Told my dad hes pretty damn smart owned a auto body repair shop and hes not relly worried he said he said top it of maybe he mis understood me but again ill drain it haha
I had the same problem.. untill I plugged the hole with a screw .. it sealed it . A month later now I have coolent in my oil .. could this have caused it ? Lol also how can I fix it
Lol
You need to replace both seals.
Yup, since I was getting a street legal bike I figured I would want something with a fair amount of engine.
Where do you find outter water pump seal or whatever you took off behind the water pump casing
So if its leaking out of that wheep hole then you have to change the little rubber seal? How much was the seal?
+Ronald Krause If its leaking coolant out of the seal, the outer seal is bad, if its leaking oil, then bearings and inner seal are bad, if both then both are bad, and on top of that if the shaft is bad, then its ruining the outer seal and making it leak water. And then on top of all of that, the shaft that runs all the way through the engine behind the impeller, could have bad bearings, making the whole assembly wobble, allowing coolant to seep through and leak out. Watch both my videos on it and hopefully it will give you a pretty good idea of what you need to do! let me know if I can help clarify anything for you!
ur amazing
haha thanks, I'm glad to hear it! I'm just trying to be helpful and pass the knowledge on
So if that weep hole (telltale hole) had liquid coming out of it then you know the seals are bad on the impeller? Also, is an impeller the same thing as a water pump??
Shaine MacDonald yup! depending on what liquid is coming out you can tell which seal is bad or if both are, oil means inner seal, coolant means outer seal. And yes but more specifically the impeller is part of your water pump the seals, bearings, shaft, impeller, washers and cover etc... make up the whole water pump assembly if that makes sense.
Shaine MacDonald also you should check out the updated version of this video on my channel, it's far better and explains things in more detail and tells you how to modify your impeller to create more positive pressure on the seal. here's the link for it: m.ruclips.net/video/-HKZ7ffScKE/видео.html
Do you have to drain the gear oil to change the seal or only for the impeller shaft?
If you are just changing the outer water pump seal then you dont have to drain the gear oil, but to change impeller or inner seal or bearing, yes you will have to drain the oil, hope this helps! Let me know if you have any more questions!
Buddy u just put that seal in incorrectly .... its backwards ... the spring inside of seal goes to inside of motor..
Nah bud, actually the entire point of my video was that the seal does not go that way haha, if you don't believe me call up Honda, or look at the microfiche. Flat side of seal faces towards the motor, spring side faces away from motor. The outer seal (waterpump) is trying to keep the water out of the motor and weep hole... So it needs to have the lip facing out on the impeller shaft.
It makes sense that it goes in backwards, or the water will run in to the motor.
RekxFord Hey man I have a 2006 crf450r that I just recently had the head redone and the piston not to long before that. Anyhow the problem I'm having is that it would appear that I have a coolant leak somewhere that is leaking over into my left crankcase.. Do you have any idea as to what it could be?? ty in advance!
+Michael Shaver Looks like youtube yet again failed to notify me when someone comments! Sorry about that! Your question has probably been answered by now but that is very strange that its going to your left side...is there any in the right side? and the waterpump shaft goes all the way through to the left side...but there should definitely not be coolant passing through there...if you have already found out what it is I'd love to hear back from you on what happened! Or if you still have questions I'm more than happy to answer them. (if youtube actually lets me know when you comment of course!)
RekxFord It wound up being the seals for the impeller shaft were worn, also some light indentation on the impeller shaft led me to believe it needed to be replaced. So after replacing all the seals and the shaft there is not more coolant leaking into the engine oil(left side crankcase).
+Michael Shaver awesome man! glad it worked out for you!!
Did you cut out half the video?? At 3:00 you're taking off the whole cover then it cuts and you have the cover back on?? You skipped everything but the last seal lol
I was only replacing the outer seal in this video...and showing the direction of the outer seal...I replaced the bearing and oil seal at a later date as they did not need replacing at that time...oil seal goes on opposite direction and bearing fits in place...I hope that helps! ask any more questions if you have them!
do I have to take the engine cover off to take the seal and bearing out or can I just pull it out
+Julien Mathieu Sorry for the delayed reply, I was out of town. And for outer seal....just CAREFULLY pull out with pliers or something as to not damage your shaft....bearing and inner seal sadly have to be taken out from the inside which means the cover must come off :(
I have a Trx450 I was riding and all the coolant came out the weap hole you think it's only the seal
all of the coolant came out at once or it all slowly leaked out? And it all depends...You can try just replacing the seal, and inspect your impeller shaft, and if you just replace the seal and it still leaks the you'll have to replace the other stuff, or you can replace all of it for peace off mind...either way I couldn't say for sure with out looking at it sorry. and be sure to check out the most recent video I uploaded about water pumps much more info and more detailed! if you have any more questions feel free to ask!
Do u put the numbers on the seal on the inside or facing outside
Back of the seal (usually with seal number, and has flat face) faces in towards the motor. Seal lip faces outward towards the impeller cover. And that is just for the outer water pump seal.
What process did you use to crack the impeller loose?
A small impact will work if you have it... Or just put it in gear and step on the rear brake while you turn the wrench.
Great video, huge help! I just traded my four wheeler for a 2004 CRF450R and it is leaking coolant only, no oil. What is the part number, or exact name, for the seal you replace at 3:50? Thanks!
B Davis water pump seal, part number: 91211-KA3-761, if you're looking for part numbers cheap cycle parts is a great resource, they have loads of microfiche to look through and corresponding part numbers. And thanks! I'm glad to hear I could help, let me know if you any more questions. I hope you like the crf! They're definitely great bikes.
Awesome; thank you so much!
B Davis no problem!
I have a 06 450r and really only leeks when it's cold. Any advice
Where does it leak from? Does it only leak when the motor is running? And then it stops when the engine is warmed up? Or still leaks a little?
hi i fixed my crf250r weep hole leek of your vids tytytyty i done the counter balancing as well of your vid but the leak has come back say 5 months later any suggestions ? ty in advance
A Broke rider's life Is it possible that you damaged your seal when you replaced it? and are you 100% certain that your impeller shaft has no nicks or burs on it? Mine felt almost completely smooth...couldn't see the nicks with out a magnifying glass, but after I replaced that it fixed it for good. Those are the first 2 things that come to mind, let me know. By the way...love your channel name!
no dint change it' and it did have a small score in it' so thing it going to be that then' so should i just change the shaft and seal if there no play in the counter balance? tytytytyt u are de man tytytyty for quick reply
A Broke rider's life Yup, if there is no play on the big shaft behind your right engine cover, then I would replace the small impeller shaft, and the outer seal that goes around it just to be safe, then you should be good man. Good luck!
ty sir
A Broke rider's life anytime!
Would it be alright to just block off that weep hole as a temporary fix
Nope, strongly do not recommend doing that. Besides still losing coolant from your radiator, all that will do is put water inside your oil and give you nice rusty gears for maximum engine damage.
@@Ebrakes alright thanks for the heads up, it just had me wondering what would happen if i just blocked the hole but im glad i havent tried
LOL NOOOOOOO hahah good thought though... ruclips.net/video/-HKZ7ffScKE/видео.html
Wish someone had an old rm that Col help me out I about to buy a book . But the shaft that turn the pump gas lil groves in it and it has to be leaking. From that mecanal seal and the seal behind the bearing
+Craig Hudzinski Oh yeah, if the shaft is thrashed then that is definitely where it is leaking from, those things have to be spotless to keep from leaking...get a new shaft and seal and you should be set! get both of the seals if there are on your bike, might as well just replace everything at this point and then it will be good for a long time to come!
I have a 02 crf450r is it done the same way?
babygirl7248ify while I have never personally pulled apart a 2002 450 to verify I do believe everything should be the same.
RekxFord okay thank you I'll give it a shot
Alright I have 04 Crf250r, and it will not run when the motor is warm. It Run on choke pretty good but when it's off it doesn't run as well. If you know please msg me back.
My first guess would be that your carburetor is a little dirty, and its clogged up somewhere, but when the choke is on it lets just enough of the mixture through to run. Try and give it a good clean and see what happens. If you already have I'll have to think a bit more :) Either way let me know.
With the choke on, the bike runs richer, maybe you need to tune/rejet a little 'richer', take a look at the plug for the proper colors??
Hey man nice video! My bike is leaking into the oil and making it milky I just replaced the seal and it still doing it! Could this because its in backwards?
thanks! I'm glad to hear you liked it! and yeah, the seal may be on backwards or there is play in the shaft(s) or the impeller shaft itself is damaged, but I would check seal placement first, I uploaded a more in depth video recently if you want to check that out it might be helpful!
+RekxFord alright il look
Hello i have water in transmision it s the same thing?
Most likely it's the inner seal
Hii did u figure out what it was
450?
What is that green thing leaking? Oil or coolant?
the green stuff is definitely coolant
+RekxFord got this bike at a used dealer got a leak from one of the holes maybe it's a lot of coolant idk
+Rambo 9milli damn sorry to hear that, will the dealer fix it for you since they sold it to you?
Haven't give them a call yet maybe tomorrow when they open.
I have a1984 rm125 and antifreeze. Is getting into the gear oil I dk what gaskets. To buy can someone plz facbook me of email.me a video. Is it a water. Pump.seal or head gasket
take your cover off and look at the inside of the water pump...you should be able to see if its leaking in from there...and id say its more likely a water pump seal...try that and if it doesnt work then id try head gasket.
We're do I get them from
Can you be more specific? What are them?
you don't torque thos?
can you be more specific, what are "thos"?
Thats street legal