Rare Street Legal Dirt Bike Won't Start After Being Rebuilt

I buy a 2001 Yamaha WR250F street legal dirt bike that won't start after bein rebuilt. #Yamaha, #Dirtbike, #Problem,
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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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[@adamtyson1728]

That's very sad about Chuck passing away prayers for his family

[@Woodsrider9338]

The world needs more people like Chuck, RIP.

[@Eric--zs6um]

No doubt about it.

[@andrewk6844]

Totally agree

[@derek4073]

Sad to hear about your friend passing away, it's nice that you are dedicating this build in honoring him. God bless you and his family.

[@dwanerusselburg7435]

Prayers for Chuck's family and friends

[@reecewilson4448]

Lost my mum last Friday bud this channel will and always has made my days better much love Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@reecewilson4448]

Building pitbikes and fixing dirtbikes has always been my thing av watched this channel since a was 19 I think now 29

[@2vintage]

Sorry for your loss

[@reecewilson4448]

Thank you bud top man keep up the hard work the channel is a favourite of mine 💙💪

[@SpencerSpeegle]

❤ I feel bad for you. You're your bored to be passing away​@@2vintage

[@johnelliott3896]

Sorry for you're loss.

[@jamestaylor7746]

I'm glad you were able to spend quality time with Chuck, doing things you both loved to do and hopefully enjoying and appreciating each other the whole time. May Chuck rest in peace and the WR250 dedicated to him live on tearing up the trails and streets in his honor.

[@Hammerback0]

RIP Mr. Chuck. 🙏🏽

[@kobybear08]

Nice to Honor a Real Helpful Friend Joe, Prayers UP, Chuck Thanks for Your Years of Helping others, Your Already Missed by Many.

[@thebigguy8306]

Ol' Joe loves his dirtbikes. Good looking old cycle, now let's rip it apart. Saddened to hear of your friend Chuck's passing, my deepest condolences.

[@robertwhitey6621]

Sorry to hear about Chuck, but his work will live on with that 250 head. Surprised you didn’t check the repaired valve by lapping it while everything was apart.

[@AllAmericanProClean]

I’m sorry for your loss Joe. Rest in peace Mr. Chuck. I’m sure he’s watching from up above as you build this bike in honor of him.

[@RichFife]

I've been ball honing (flex hone) nikasil cylinders without any issues... the idea isn't to remove material but to remove the glaze while creating cross hatches. The flex hones for a 95mm run between $40 -$70.

[@kenjuicekrajewski9577]

Exactly a trick most dont know

[@RonaldDaub-xi5jz]

Hes measuring the ring Gap from the wrong end. I'm not going to begin to even go there as a engine rebuilder for many years I don't know where he learned some of the stuff he does. But it's all wrong. He doesn't know the cylinder is slightly larger at the bottom. And with the ring Gap that tight when it goes up it's going to be zero or less that's no way to do it I don't care what he says or anyone else

[@RonaldDaub-xi5jz]

​​@@kenjuicekrajewski9577this guy is a hack I don't care I've seen it before and the people that hold up for it are just as silly.

[@RonaldDaub-xi5jz]

49:19 you just put rings in it and you got low compression.😮 I thought you put different valves in it and was bragging about how they were laughed in and specifically numbered

[@leeberry3155]

R.I,P Chuck😔

[@davessparetime83]

Lap the valves and check for open areas on the seats. Always double check valve work before you put it together. One more thing I noticed when you put air hose on for leakage test the intake cam rotated some meaning the intake valves could have opened a little.

[@preez77]

Correct, those looked like they were only cut, not lapped. The repaired one didn't look so hot at all.

[@AnthonyRBlacker]

Oh man, Joe, so sorry to hear about your friend Chuck. Prayers to his family, of course you and yours.. man, tragic. Thank you for letting us know about him and his work.. he will be remembered!

[@madcatyyz]

Sorry to hear about your buddy. The world needs guys like Chuck. Keep up the good work you are doing.

[@beentheredonethat6219]

Prayers and positive thoughts for Chuck’s family!

[@stkyfngrszmooth]

21:50 Unfortunately, you're a tooth off on the left-side cam.The timing mark is clearly high compared to the right-side cam. That's why it doesn't have any balls. It's not off far enough to do any actual damage but is off enough to make it run rough.

[@bradley-klamp]

I noticed that right away and came down to see if anyone said anything. Joe you want both dots to be parallel to the head on each cam sprocket. There's an outer dot and inner dot. Bike is coming along really good! Sorry to hear about your friend.

[@bananabrooks3836]

Good spot, @22:00 even clearer, given this you would've thought at this point in the stroke the exhaust valves might be passing air?

[@stkyfngrszmooth]

@bananabrooks3836 Most likely. Plus, if you look at the inner markings, you can clearly see they don't line up just like the outers. I'm actually quite surprised that Joe didn't catch this since he's always so careful with the timing.

[@bradley-klamp]

@@stkyfngrszmooth we've all done it at some point. If you stare at the sky, you forget about the ground. Over looking things is in the nature of being a mechanic. Even the best of the best will have slip ups. Nothing to be ashamed about. Just means more work for you.

[@stkyfngrszmooth]

@@bradley-klamp I made the same mistake once. I had just switched from working on cars/trucks and the like and I thought the markings looked "close enough." I soon learned that the timing markings on vehicles are much more sloppy compared to the ones on bikes/recreational vehicles. Never screwed it up again.

[@ErikH86]

Our thoughts and prayers are with you and Chuck's family. Joe, we appreciate your dedication of this bike in his memory. It is important that we honor those who have impacted our lives in such a significant way. Blessings Erik

[@ar2043]

So sorry to hear about your friend Chuck Joe!!! Very heartfelt and wholesome "eulogy" that you gave him. Sounds like you really respected the man and that is super important in life!! It sounds like he really respected you right back too or else he wouldn't be so interested in helping you and hanging around. Kudos to you for dedicating the build to your recently passed friend!!! ❤️❤️👍🏼👍🏼🇺🇸🇺🇸

[@scottrittenhouse3131]

Sorry to hear about chuck!!! Hate losing talented guys like him😢

[@skatkat6885]

at least you had a friend....I've never had a friend all my life.... military guy here.......never the less, I feel so sad for you my friend... we love your channel....and especially my wife loves your channel and you. Death happens so suddenly and is so permanent. It's a shock to some, and a reality for everyone... Morn your friend..think of all the memories you shared....and take a little of his character with you, so he will always be part of you.... Hugs to you and yours.... God bless you in the city and outside the city.... Kat n Al Omaha, NE

[@daver3057]

I just really appreciate the patience that's always exhibited here. I need to work on that.

[@theholidayboy543]

I’m sorry to hear about Chuck, it’s never easy losing someone. It’s nice that you are dedicating the build to him.

[@just4kicks950]

Thought & prayers for Chuck and his family 🙏😔. Sorry Joe for the loss of your friend. Seems we are losing all the greats & Chuck was one. Thanks for all your awesome builds Joe 🎬👍🫡

[@alanblenkinsop2775]

Are joe in very sad to hear that you’re friend chuck has passed away my deepest condolences and sympathy to and his family nice of you dedicating this bike to him 🙏🙏🙏

[@paulbudford]

Chuck sounds like a cool guy to know. Good friends like that will be sorely missed.

[@thegasgeezer]

Yeah I noticed that the left cam was out, your timing is out, maybe the valve too but the dots didn’t line up on the footage!!

[@WinnfieldCustoms]

my 99 wr400 started knocking about 5 years ago so i tore the engine down and was going to fix it but life happened and its all still in boxes in the back of my shop. this vid makes me miss my bike i paid 1400$ for it already street legal, baja designs light kit, FCR carb, YZ timing, YZ exhaust, IMS tank, aluminum rads, etc. ended up putting 17" supermoto wheels on it and riding it everywhere. maybe one of these days ill get some free time. thanks for the vids man

[@MrTruckerf]

I hope you can get to it. I have several such projects; the oldest one has been in pieces since 2012. It is a major job so I keep putting it off although I think of it from time to time.

[@TheunsPrince]

Very sad to hear about Chuck passing away😢 , it's very nice that you are doing this build in honouring him

[@ste1872]

It's crazy how you manage to rebuild these bikes like it's simple to do & with ease as well it's great to see how it's done 💯👍🏻

[@joelboutier1736]

I could visually see that valve that's not sealing. I don't know if lapping and/or burr grinding it would help. I could see the gouging where it needed to seat. I don't know if that head is salvageable. There's only so much material you can take off.

[@bobrose7900]

Top bloke Chuck, an example for everyone - always there to help. He will be sorely missed by everyone that knew him.

[@chrisparola3949]

Pretty funny there is no denying that when you say you adjusted the valves that you really do! That peacock tail set of feeler gadgets you have tell the story. Tell your Wife you want a new set for your birthday 🥳

[@kevinhickman6368]

Sorry to hear about your friend man,that’s terrible,I have lost a few good friends in my life as well so I know how you feel,beautiful bike and I’m sure Chuck would be proud!!!!

[@ar2043]

Joe, love your work. I am a follower and even have my notifications turned on, so I mean this with all do respect… I really do. Why oh why won't you measure piston to cylinder clearances? I know that I'm going to get jumped on about this and told that it doesn't matter but it does matter the first time that it matters. Especially when using "Seize-Co" (Weisco) forged pistons. They are not as forgiving as standard cast. AGAIN, This IS NOT a dig at your work. You know way more than I do… I just think you should measure your piston to cylinder wall clearances. Everybody's gonna jump on me and say "well, standard bore standard piston size he's all set". Well, you are all set until the first time that you're not all set. Especially with the Weisco Pistons like I said. Most people like to add 1 to 2 thou compared to what Weisco recommends, as well as an extended warm-up time. If you ever come up short on the recommended clearance with a Seize-Co and you ever have a slight overheating problem or a few other instances, it could lead to stickage. That's all I'm saying buddy… Nice work as always.

[@larrywarner9314]

Joe sorry for your loss 🙏, it sucks you lost your friend 🌹

[@craigwalker6513]

R.I.P. chuck. Its hard to loose a friend Like that. the world needs more Chucks..

[@shotgunz124]

Sorry about your buddy chuck He would be proud you did this build in honor of him… You got a good heart not many people care anymore

[@TroyJohansson-l6f]

RIP Chuck. I have pulled the compression release lever before when kicking a bike that I had just pulled the plug. Compression release was fantastic.

[@jetstreek17]

Sorry to hear about your friend Chuck, sounded like a pretty decent guy. Thanks for sharing your day.

[@YouriCarma]

You can grain in your valves yourself. I've done it with some different grain sanding powders Just keep turning, sanding them in. I've done it for my 1976 Honda CB400F. A simple way to check if your valves are sanded in well and don't leak anymore by using some break cleaner. If it can't get trough they're sealed well.

[@leroywilliams1373]

Sorry for the loss of your friend and its awesome that you are delicately this build to him 😀

[@alabamared2568]

Hey Joe I'm sorry I'm late to this video was slowly catching up on all of them. As a newer follower and I'm very sorry to hear about Chuck's passing that's really great of you to dedicate this build to him. People like Chuck are few and far between and thanks for all you do to help us with educational information and videos your a great content creator. Bless you Joe and Chuck for all he did!!💯

[@christopherireland9404]

Sorry for your loss. Chuck sounds like he was a great guy.

[@1jbunceiii]

I've had one, made it street legal and road it on the trans America trail across country. I put an acerbis fuel tank on it which carried 6.6 gallons of fuel....was a tank!!

[@billkinsey2690]

.

[@boboleniczak1110]

Sorry to hear about your friend Chuck. Sounds like he was a great guy. Bike looks great tho. Hope you get it running. Can't wait till next video with it!

[@TheMfd420]

R.I.P Chuck losing good friends and family is hard stay strong bud. I love your videos so much simple to the point and very educational I’ve learned so much. Thank you.

[@johnnorman6022]

What a great guy dropping off some parts going out of his way to help someone it's nice to know there are peopele like that in today's world .

[@andrewroberts8993]

A little tip. If you oil or grease up your gaskets you can reuse them next time you take it apart. An old wise mechanic told me that and it works.

[@MrTruckerf]

Thanks! That's why I read the comments; there is a lot of experience talking!

[@stephenhaslam680]

Given the original damage it's amazing you managed too get this far. Great looking bike too!

[@dukesilver2019]

Joe, gotta kickstart it like the 4T it is. Great job. That was a great bike - good on the trails AND passable as a dualsport.

[@SubliminalHDTV]

So sorry to hear about your pal, Chuck. The world needs more Chucks. RIP. Love and prayers from NZ

[@johntunstall9698]

I love it, at 42:00 the tried and true method of if you can’t fix it right just turn the idle way up 😂😂😂

[@MrTruckerf]

It was screamin'!

[@joelatkinson2080]

Sorry to hear about your friend Chuck passing away. He sounded like a really good guy. Check out the mid-body carb gaskets. You might need to rebuild that part of the carb. Good luck.

[@Smalltechguy]

So sorry for the loss of such a good friend always wanting to help. This year has been a terrible start with myself loosing my mom back in Feb and now my adopted dad just a few days ago. I watch your videos nearly everyday especially after I get done messing around in the shop. I'm battling just one more tire with a horrible left shoulder tear.

[@stacks1967]

Sending my condolences Joe. I could only wish to have had a friendship like yours. Praying for you and Chucks family. Keep pumping out the videos. If you have any pictures of you and chuck together maybe you could tie them in with the next video. We all would enjoy that.

[@markjones6181]

Awsome job on the rebuild Joe...... RIP = Chuck you maybe gone but never forgotten......✨️💫🔥❤️💯👍🏽

[@kurky72]

Wow, so sorry to hear about Chuck I’m sure he was a great guy from what you shared with us about him 🙏🏻

[@copperaudio9664]

Wow Joe, double whammy. Sorry about Chuck. Us old guys got a lot more time behind than in front. All the work you did and then have an intake leak sucks too. Can't wait for the next episode - Thanks!

[@mikebennett7149]

By the way 56 year old vet here love your vids very informative

[@jeremymullen5378]

🔥I had a 400 and it was a nightmare to start hot or cold 🔥👊🔥

[@wurthmannd024]

next time to check valve seat seal, put some water in the combustion dome on top of the valves, and blow some compressed air into the exhaust and intake ports. you shouldn't see any bubbles coming from around the valve edges. I always do this before installing a new/rebuilt head. good practice even after lapping valves.

[@MrTruckerf]

Thanks for the info!

[@shaunforcier]

My condolences on the passing of your friend and I will send prayers for his family

[@Bossman792]

The 400 was a nightmare to start ..a smart carb helps ..sure there is a certin way u kick from tdc

[@johnmccann1234]

So sorry to hear about Chuck. It's terrible to loose friends and family. Was surprised that you didn't hand lap those valves to get a good visual on the sealing surfaces before you put it back together. Hopefully a good shop can fix the challenged valve and you don't have to source a new head.

[@vigorousboredom7016]

I wish I had really good friends like Chuck. He sounds like a super great person. My condolences to you and his family. RIP Chuck, a fantastic motorcycle engine machinist.

[@johnb5519]

Sorry to hear about your friend.

[@indianapublicland7429]

Dam it Chuck! RIP Sorry for your loss.

[@markparker5451]

I guess not being able to sleep isn't so bad this morning...Joes back!

[@ste1872]

Sorry to hear that about your friend I'm sure he'll be watching you right now that bike looks like new great job

[@Jayjay-cb5ft]

Sorry to hear about your friend I just lost my little brother my best friend he was 17 on 04/13/24 in a 4wheeler accident its been hard for my family .😢

[@Willon1Wheel]

I can hear the wind in the background !!! Great video, and I'm sorry for your loss!

[@peteramberley9952]

Rip chuck as a few people mentioned I thought the left hand cam shaft was out a tooth

[@Tuppi1290]

Sorry to hear about your friend, I know how you feel having lost 2 friends in the last month. Take care

[@johnhicks735]

Before resent out. If it's stuck it'll do the same thing Joe. It's just not dropping down all the way from being dry surfaces still. After all it's A refreshened head now to it's to be expected. It's A simple fix try before you spend more money for no reason first. Try this next if that doesn't do it. Emery cloth and PB-blaster underneath the valve in hand taken out of the Head to clean up that valve only by itself.

[@AnthonyRBlacker]

I'm glad that when you're preparing the piston and rings and the cylinder you emphasize OILING everything. I know most all of us know this, but to anyone who's possibly watching this as a first timer, a motor like this, a 4 stroke, NEEDS OIL on EVERY part that would 'make' contact. The oil IS the contact surface, not the metal. Well, the rings, but they're actually consumable. The thinnest amount of oil is between every moving metal surface at ALL times when a motor is doing what a motor does.. if not, if there's even ONE dry area, there will be catastrophic damage. Thanks for being sure we understand that Joe.. I've seen things man, rebuilds that have just gone very bad due to lack of lubrication on first run.. man it's ugly!

One trick for fiddly bikes that do not want to get into neutral is to feed the clutch out just a little while fishing gives a feel for getting it in to neutral

[@SantaClaw]

My condolences with regards to Chuck. Very sorry to hear that.

[@MM_in_Havasu]

Sorry to hear of the loss of your friend Chuck. May he RIP. When good folks like that leave us, they also, unfortunately, take that knowledge with them. I tend to agree with @stkyfngrszmooth that your exhaust cam timing is a tooth off, double check before you tear it down again! Great video just the same, thanks Joe.

[@peteraitken6494]

Hi joe sorry that chuck has passed may he rip thoughts go out to his family and friends kind of you to honour him take care and god bless 🙏🙏❤️

[@Biffo1262]

Without sounding critícal when I saw the new seat that was previously damaged it didn't look fully lapped in. If it doesn't settle down it might be worth taking the head off and doing it. I know he cut new seats buy perhaps he left you to lap them in but I also noticed the timing mark on the left side WASN'T level though you said it was but seeing as how when you did the leak down the sound of the air leak never faltered when you roetated the engine slightly I still think your dodgy seat valve is your main problem. Spend some more time lapping it in and get yourself a highly polished valve seat.

[@GNX157]

You should experiment and send one of your uncoated pistons to Line2line coatings and see what they can do for you, and the benefits for your engine.

[@kevinsimpson7687]

Well that sucks you have to pull the head again. Have you ever tried checking valve to seat sealing by leveling head combustion chamber up then fill combustion chamber up with water then blow air with an air wond in each port and see if it makes bubbles lol. If a valve is leaking bad you won't need an air wond cause it'll leak like a submarine with a screen door lol. It's a mint looking old WR man I wish I could find one that still had a carb. I almost bought one of the last ones made a 2020 model after I paid my DRZ400S off but didn't because I thought Yamaha was gonna upgrade it to a 300 like Kawasaki did with the KLX and Honda's CRF but as we see now they didn't. You'll get'r running right man you always do.

[@bananabrooks3836]

It's when Joe said "Chuck's done his best" l thought Mmmm so he too might also have had doubts. 75 (count 'em) kicks later..... Leaking intake valves probably not creating enough vacuum to suck the fuel through at kicking speed which might be why it bumps fairly easily but l would be checking that carb again.

[@KevinEvans-fi9up]

I had this same bike same year everything they are great bikes I also had an 2003 can't beat them

[@Rpmatuomoto]

Sorry to hear that you lost a good friend like Chuck. I too lost a good friend that was like Chuck a year ago he would do anything for you and he taught me a lot about small engines. 🙏

[@kurtyoung6769]

Place the ring at the very top of the cylinder and measure then measure the ring gap again in the middle of the stroke. The difference will give you an idea of cylinder wear/taper.. A feeler gauge between the piston skirt and cylinder wall in the middle of the stroke gives a good indication of piston wear and cylinder wear too.

[@allan9603]

Oh man Joe, so sorry to hear Chuck had passed. Always seems like the good die young doesn't it?

[@MrTruckerf]

Did he mention how old Chuck was? I didn't catch it. I assumed he wasn't young. I never worked on vehicles until after I retired 10 years ago. Now I work on them a lot, thanks to KZbin and good mechanics posting videos. I am 72.

[@rickypevey7751]

Sorry for the loss of friend and that is a nice lookin WR

[@matthewstuckey665]

Sorry for your loss. Great video joe. Sweet bike. Hopefully that head can be repaired.

[@johnbrass8910]

The valve seats still look bad, I usually use a steal wool pad to scuff up the cylinder, works great. Good job, nice bike, very clean!! I think your problem is that the valves are leaking

[@av8or971]

that head was reworked, but was not decked, cleaned, etc? looking at that valve, it def looks like that area is way to chewed up to seal.

[@mateuszc3020]

I wonder if the cam shaft sprocket moved a bit when the valve got damaged. Those sprockets are pressed in so it is possible.

[@motorcycleman3322]

Sorry to hear about your friend 😢.he's with God now.and looks like he did a great job to.😊.

[@thegasgeezer]

Bless, poor Chuck, sorry to hear that your mate had passed away. I’m sure you’ll sort it out, you always do..👍

[@juk-hw5lv]

The valve pockets (idk how it's called, those machined depressions in the piston crown that mimick the layout of the valves in the head) on the top of the piston look like Sakura petals. Fitting for a Japanese bike and kind of cool

[@Chrissy-boy]

My condolences for your friends passing Joe, hope it was peaceful. 🙏

[@capeRCouple]

Im sure its like others said on here that the piston should be top dead center to start that bike as its similar to the newer motocross bikes like the crf450r,those style bikes are all hard to start hot or cold.

[@bencameron4153]

Very sorry to hear about Chuck. May he be in peace. Joe, love your videos and I watch them all as I just found your channel a few months ago. You do amazing work and I’ve learned a lot. There is one thing though that troubles me a little. When you are in your garage and you have one of the machines running, you absolutely need to open the garage door to ventilate. Those fumes are very toxic and carbon monoxide poisoning will kill you in a heartbeat. I know you don’t run them long before you open the door usually, but you should still get in the habit of opening the door even a little.