Yamaha YZ250F Dirt Bike Doesn't Run. Let's Fix It.
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- Опубліковано 10 чер 2021
- I tear into this 2004 Yamaha YZ250F dirt bike to find out why it broke. #Yamaha, #250f, #Dirtbike,
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The following video features activities performed in controlled environments by knowledgeable persons. DO NOT attempt to duplicate, re-create, or perform the same or similar activities at home, as personal injury or property damage may result. 2vintage( Joe Weber, the persons shown in this video and ANY CONTRIBUTOR, ARE NOT LIABLE FOR ANY such injury or damage. ALL 2vintage( Joe Weber) CONTENT IS FOR ENTERTAINMENT PURPOSES ONLY.
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Did u get married?
Do you still have the Yamaha snowmobile
It’s the crank bearings I think
Hi up
Must feel different working for someone when you usually buy, fix, and sell for profit. I’ve learned so much from you, keep up the great work! Thank you
Good work man I’d say that everyone that has a bike should try to at least do their own work there to many young fellers out there that are scared and just start easy I started tearing bicycles down and putting them back together when I was a kid just wanted to know how things work so keep up the good work
Yessss finally got another 4 stroke crossers on here been waiting ages for you to get one back on the channel
I have a 2009 kx 250f and that thing goes fast afffff
Bro seriously
@@SamyHamSam what?
@@sihx8932 finally another 4 stroke dirtbike lol
@@SamyHamSam I have had 2 strokes and 4 strokes obviously 2 strokes are always gonna be better and faster bikes but I got a 07 crf250r so good to watch some 4 strokes for a change Been ages since I’ve seen him have a 4 stroke crosser on the channel 💯
When I heard you say customer said locked up, my first instinct would probably be to pull the oil filter for shavings, but I’m not sure how much if any you would’ve gotten with just a crank bearing. Good job finding the culprit
Love the channel man as a young guy who doesn’t know a thing about motors it’s really interesting and valuable for me to watch. Amazing all of your knowledge!
I love how much your posting content right now! Another awesome video!
Good one joe! Would love to see a xr400 to on the chanel
I got a 2001 xr400
Or a xr 650
Xrs run forever unless poor maintainer
@@project4stroke876 i got the 2000 and 1997 did a ful rebuild serie on the 2000 and the other one was arunner
@@kylechupick2232 exactly thats why i love them!
Literally do this exact repair on my 2002 yz250f! New crank was $380 and had to wait over 6 months to get it! I’m kind of hoping the owner wants you to fix it so I can watch! I’m right to the point of splitting the case now! Keep up the great videos, love your channel!!
I’m wondering why he said it wouldn’t be worth it to just fix it lol. He’s acting like it would be smarter to part it out the. Just buy the $400 crank and fix it 🤷♂️🤣
Yes a yz been waiting on a build like this keep up the good work I hope everyone has a blessed day
When you're putting them cams back in make sure you put the retaining clips on the bearings. Easy to forget.
Your vidoes are great 2vintage. you dont skip much things but its still not boring to watch. well done!
Fuck yes!! I honestly love all the videos you do but these dirt bike ones hit different 🙌🏾 you definitely helped inspire me to start my own channel, thank you and keep up the great work
Also be sure to check the kick start and it's gearing. Hate to break one down just to find it's actually a easier solution.
This time you were spot on.
Cheers
great video man. I have the exact same bike as this and I had it locked up on me aswell, the problem with mine was my timing chain was old and stiff and it siezed my intake cam, I took it apart slightly sanded the seatings for the cam and redone the valve clearances and replaced the timing chain and she was mint, to check the oil on those bikes theres a dip stick on the headstock opposite side to the vin number as they have oil pumping through the frame.
This is why I bought a two-stroke since there simple and cheap to fix. #2strokegang
Yes but 4 strokes are still awesome
4 strokes are still easy and simple
@@OGKILLa9365 nah there not if you blow it up it Might as well buy a whole new bike or motor it’s like $3000 if you blow one up from the cases up on a 2 stroke if you blew one up from the cases it’s only $1000 because they don’t have cams valves, valve springs, timing chain ,valve clips , Oil rings and piston, rings Connecting rod and crank and ect on a 2 stroke just has a cylinder and power valves connecting rod and crank. 👋😁
@@450playyer if you take it to a shop of course theyll charge you $3000. U can rebuild it yourself for half of that. I own both 2 stroke and 4 stroke. And 4 strokes tend to last a little longer and are better on fuel, more comfortable to ride. 2 strokes are just made to be on the top end all the time, and they drink gas a like crazy, the premix itself cost more than the gasoline
@@450playyer Na
I just ended up getting a 450 and the dude told me it was locked up come to find out it the crankshaft and I love you video man
Good vid man keep up the good work I learn so much on your vids
Very interesting vid Joe!
What would be the failure cause?-bad or no maintenance?
Those cranks come with heat marks straight from the factory. Every yamaha crank I've purchased came like that
Crank is shot. My 2009 did same thing..
I’m actually rebuilding the bottom end as we speak. Waiting on gaskets right now and then rebuild time. Also. The blue is normal. Even comes on some new cranks. Good luck man.
Great vid!!!!!!Good old bikes!!!!!! I will be doing a few of the old 4 strokes MX bikes starting with a 2008 KX250F in the next few weeks on my Channel, I just have to finish up on the XR600R, It should make a good vid as I got it in boxes of parts and I have to put it all back together. I should be fine as I have a heap of spare parts from previous spare part bikes and builds. Cheers Rick MTR
Great diagnosing video!!! i would stilll rebuild it tho instead of parting it out!!
Always learning Joe top video again 👍🙏
Finally a dirt bike rebuild ☝️🙏
Lovin the videos bro!!! When are you gonna do a Harley for us?
I REALLY Enjoyed this video. Such a Nice Bike, and to end up Parting it out. What a shame it has to go that way.
Get a Carillo crank and rod with hi comp piston this thing will fly
PLEASE DON’T DELETE THIS VIDEO I HAVE THE EXACT SAME BIKE THAT NEEDS A REBUILD AND THIS VIDEO IS VERY HELPFUL THANK YOU
Awesome vid and edits and filming and bikes
What a bummer mate bikes in great condition otherwise too great diagnosis joe top man 👍👌🔧🔧🔧
Awesome bro. That is engineering at its finest .
I noticed when you first set-up to check the valve clearance the exhaust and intake cam lobes were both pointing in and down then next shot they were pointing up and out which is where I would’ve expected to have seen them at TDC did you adjust the timing between these shots?
Such a dope bike gotta get one for sure! Does it even have a key? Must be a new gen thing?
You should do another SXS build, if you can find something be to fix,loved watching the mule one
That thing blued the crank I’m surprised it didn’t throw the rod, I think someone ran it with not enough oil
That bluing is from the factory heat treating.
Brand new yz250f cranks have these heat marks from assembly
what do you think caused the rod and crank to bind when there was oil in the oil pan?
It's a dam good thing that didn't give and brake while it was running.
Finally a 4 stroke love the vids
The 450s last a long time if you keep on maintenance and don’t ride the limiter 24/7. I think the early yz450s needed a crank mod as they didn’t have great lubrication for the rod
Damn I have had some crappy luck with my 06 yz 250f thing is an absolute blast tho but for sure a lonely pit over last couple years I have put well over 4 or 5k in it. But I have an odd one for ya my head gasket now keeps leaking coolant into the piston i have changed it twice now with no luck. Has 290 big bore kit bored to 312 high compression piston stroker crank. Any idea on how to keep it from leaking? Had to tear the motor apart due to clutch basket exploding.
Hello 2 vintage pls say hi And pls tell what’s better for trail riding 4 stroke or 2
Great teaching as always
🤣🤣
At 25:05 you mention the coloration. That is not from overheating. That is from when the crank web is heated to press in the crank pin. I have installed many many dozens of yz250f/yz450f cranks and they all look like this new.
All the cranks have blue there from when they heat up the crank to assemble the rod and bearing onto it
Yep, the rod will get blue if the bearing is gone. Looks like the two halves migrated toward each other and pinched the rod. New crank either way.
you must have done a few of theses because you were fearless when it came time to split the engine case ? since there was oil and the oil pump seemed to be functioning properly what is it that you think caused this issue with the crank bearing to have burned out ? i might presume it possible they had only re added oil after it already failed because this seems like something that should really never happen if you always maintain a bike properly ??
I knew it was going to be the crank bearing. It’s pretty common with those. At least it didn’t hand grenade and take out the case, cylinder and counter balance. Not as expensive a fix.
Finally someone who actually knows what’re they’re talking about
This Bike looks so good! I love Yamaha!
What’s your opinion on kawis my opinion I LOVE them there so beautiful bikes
Full on Sherlock mode commences now. Should use black thicker nitrile gloves, works great for me and stays solid even with gas. Infini touch is one good brand.
Where you from man appreciate your channel man
Great video man
Enjoyed the summary near the end of the video of deciding when to part out a bike… hopefully never! 😜
Are the plastics on the bike a restyle plastic kit for the old style yzf frame
What dirtbike stand is that and do you like it I’m looking to buy one?
Thinking bout buying yz450 fx next year!
wow man that is so clean looks like a great bike! i love the older YZ250s
Wondering what you ride if this is so clean,
@@chrisatc627 i ride a 2014 ktm 150 sx its clean for a 2004 bud
I love my 01yz250f its mint you're looks pretty good shape also
100% crank bearing on stator side, there isn't supposed to be oil in the stator cover
Yes there is. These engines dont have an oil seal on the left bearing.
Straight away, it looks like the jug has been replaced or at least been into/cleaned. There isn't any dirt staining on the aluminum. Botched top end job?
Are years from 2003-2006 on a yz250f prone to blow up the head gasket and be costly repairs?
Just got a handful of superminis what you know about those Joe these things are super fast two stroke 50cc not them China ones lol
So I bought a 04 yz250 from my nephew. I got it for $500 bucks couldn't pass it up. I knew it wasnt running when I bought it but I'm getting ready to work on it tomorrow and was wondering what to look for? Something like this? He did say that it locked up on him when he crashed or something like that but it came free. He never tried to start it again.
you dont worry about any of that dirt above the mtr falling into the top end while your working?
Hey just watch the video on the 92 kx 250 do you still have the stock pipe it came with if so I will buy it from you
Man you are smart as s*** for your age I ride bikes and know how to do the simple s*** but that's about it you know how to replace cranks I know it's a pain in the ass but it's worth it on this bike
my bike has 5 neutrals cant get it to go into gear what would be the common cause of this it turns over fist kick
had two crank do this exact thing to me. 3rd cranks the charm???
Good job man and godbless
That thing is clean !
It doesn’t need a new crank just buy an new rod kit there place in Arizona that specializes in Kranks or you can split the cases yourself but yes you’re right on I’ll either way you can get a ride for it though
Was wondering about this yz
Same!
First thing you should have done is drain the oil to look for evidence of metal in the oil from catastrophic failure
Good job.
Hell ya man that thing is awesome
It's gotta be the crank. What else would cause it tp lock up and then be free again with no work
what a beautiful machine
That is very true bikes are worth more in parts than they are whole all together very true
Great video
Another mans bike I like it
This music intro is kick ass!
This is the stuff I like to see quality bikes
apparently not, a rod bearing going out is not a sign of quality
if you want a good bike buy red... Yammers are SHIT... All my buddys were rebuilding theirs every season I just maintained my hondas.
@@LiveFreeOrRIP the old carb Honda’s suck I’ve had about 10 with engine failure once fuel injection they good I’m talking about there old 4 stroke mx bike
Now that’s a good find
That's why we love two strokes!!
What causes a crank bearing to seize like this? What can be done maintenance-wise to avoid it?
Frequent oil changes, and CHECK the oil as well every once in a while! Also no 5 min long limiters in neutral!
Learned somethin!
Doesn't the early 450 engine need the oil modd. Because the bearings often go out from lack of lubrication.
I know the yfz’s did, so I imagine the bikes did too
The valves are pitted😂 the piston rings are supposed to be a bit loose so they can compress against the cylinder wall. The main bearings are probably cooked
Why wouldn’t you have taken off the clutch cover and stator cover off for inspection rather than taking the entire head off right away? I mean obviously it was going to be a crank bearing failure anyways but it’s always
Good to inspect the clutch and kicker gears first, may save yourself some time
Damn I've blown a motor 2 times rebuilt them and damn it was a lot of money but riding them are fun but rebuilding them is just a bit more fun
My dads RM125 would lock up but you would be able to kick it and free it up a little. Pulled the top end apart and saw that the crank bearing was in pieces. Those darn crank bearings.
Rod bearing my bad
So your saying it’s not worth fixing them? A buddy of mines has one that’s busted and is considering fixing it since it technically cheaper then buying a newer one.
Nice can we see a Yz 426👍
Also Do not just drop another crank in if he has you rebuild it. Discover why that one failed and fix the issue. Replace the oil pump for sure as a start.
Sweet I got a 2018 Kawasaki 250f and they are fast I race motocross
With everyone thinking an 18 year old bike is worth 3500 on marketplace I would just fix it. The crank kit is 100 bucks on ebay, 220 for a piston kit and maybe 50 for the gasket kit. I just did the same thing to my 426f before i got deployed.
Would anyone here know whats wrong with my quad its a 2006 suzuki lt160 its starts first tap of the button but whenever i rev it or put it in gear it shuts off
I really want to see you fix a xr400
that was not alot of coolant looking at the size of the rad compared to what come out
Do you know why the exhaust tip is sticking out, not what I'm used to seeing is it after market or something
it's stock. This is a four stoke dirt bike, maybe that's why it looks different.
@@2vintage I just seen kits online for 274 , I wouldn't think the rest would b tht much? Or would it
I know this song from fuel TV back in the day lol