Seller Said This 250cc Dirt Bike Shut Off While Riding So I Got It CHEAP
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- เผยแพร่เมื่อ 11 ก.ค. 2024
- I buy a 1996 Kawasaki Kx250 dirt bike that won't run. Let's fix it. #Kawasaki, #2stroke, #Fix,
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I enjoy watching Joe fix these machines, but the one thing about it is that there's no follow-up on what happens to them once they're fixed. It leaves people to assume they're just piling up on Joe's property. I, for one, would be very interested in what happens to them after they're fixed. A breakdown of how much he paid for them plus repair costs and then ultimately the sale of each of them to see if he either made or lost money or if he broke even would be awesome. Does anyone else feel the same way? Thanks! 👍🏻
Me to🇦🇺👍
My guess is with all the four stroke bikes out there these days, at the track someone just poured straight gas in it not knowing about old school 2 strokes and 2 stroke oil.
My thoughts as well.. straight gas ⛽️ then boom… then the realization, “forgot the oil” so before returning blown up, oil was added as well as the “I don’t know what happened”
That's what I thought too.
Time to call LA Sleeve 😬
The fuel didn't look mixed when he tested the petcock.
Ditto, straight gas been run for a period .
Coolant lines look like every garden hose I ever drank from when I was a kid.
each of those fancy green lines added 10 HP
Dont they lol... I thought the same thing. Brought back the 70s for me mate lol
Yes, those definitely need to be replaced with coolant resistant hoses.
They are legit Kawasaki Green lines.
This is why when my nephew called to borrow my six month old two-stroke, to ride an illegal spot with his idiot friends, he got laughed at.
because the cylinder was roached? or because you figured he would?
My guess is they didn't mix their fuel properly. Was probably really lean on oil.
Less oil = More fuel = Rich / less oil would create a lubrication problem, not a lean condition; I think Joe is right on, was running way too high air to fuel (lean) created a lot of heat and grenaded the piston. My guess is an air leak down stream from the carb.
@@user-mx6ce6vv9f Nope, it's lack of oil in the mix. Yea she was running a bit lean(plug) but not enough to cause that damage. It's pure friction damage. AND he said the locked up in mid jump, amateur rider with no throttle control over reved it. typical ricky racer over reving and constant throttle blipping
@@mazdarx7887 Your both wrong he checked the fuel it was colored so it had oil. both jets, air screw, and needle were rich especially the needle so an air leak is a bit unlikely the cause.
@@PurpleMonkeyWaffle It had oil, but how much. By looking at a fuel mix tell me how you can tell the difference between 30/1, 40/1, or 50/1. If you had the fuel and oil that was used, mixed them at varying mixtures, you may see the difference. Barring an evaporative or IR test you don't know what was in it when the piston failed. But the key is in the needle bearings. They take a while to wear out like that, not just a minute or so of overheating.
We used to race 2 smokers in the 70's and seen many types of failures, The head shows lean and not enough oil. Pistons grenade like that from overreving, too small for the bore and lack of oil.
Now on the other hand, there may have been enough oil in the fuel by not mixed to a homogeneous state(most people put the fuel and oil in a tank and shake it for a few seconds. We always put 1/4 fuel in tank, added required oil for the mix, shook for about a minute, the added another 1/4 fuel shook repeated till all fuel was in. The oil will separate if not mixed very well. It will look like a lean burn on piston, and plug, but the bearings tell a different story. Then the over reving, now-a-days you don't see it so much with rev limiters. Watch a good rider jump vs a ricky racer. Ricky racers usually wind em out in a jump can even hear the limiter kick in , but not good or pro riders
@@mazdarx7887 I would lean more towards the fuel mixture being the issue. That bike was meant to be revved in the higher RPM's compared to the bikes of the 70's. Your 100% right that there is no way of knowing what the fuel mixture is. These days, alot of the 2-stroke oils being sold (atleast quality oil) is the same color as the fuel so it is very possible this was just some person that had no idea that oil needed to be mixed with the fuel and they just threw straight pump gas in the bike.
The gas you pulled out looked pretty clear not much oil
Have you ever run Maxima oils? cant tell its mixed lol
My guess is they just grabbed the wrong can of gas.. good work joe, thanks for bringing us along.
I'd say they ran the incorrect fuel ratio or straight gas.
I'd also replace the rod and bearings since you're in that far.
every video of yours I pray for a difficult one for 2 reasons:
1 - is what makes me watching
2 - because I know you can solve it
Wonderful isnt it? Kids got some skills, thats for sure. Has helped me a Lo9t already, been watching him since he had like 20k subs. I always learn Something from is videos, worst case its same thing but Drills the problem solving steps in for good and others a Whole new can o worms :) Cheers.
So much suspense building since you are checking the top end LAST!! 😅
You'd think these jobs would be hard enough without taking off everything everyone already knows isn't the problem.
Always replace the crank seals especially when the can't be replaced from the outside. It isn't worth the gamble saying "they look good". This is definitely true when the engine has gotten hot enough to destroy the piston and upper rod bearing.
I was about to type the same thing.. Good call mate.
Not needed if you are just flipping it for profit.
@@Poppinwheeeeellllllieeeeezso your a scumbag
It is needed if you don’t want to get a reputation for flipping shit. Common sense
I always change the top-end bearing with a new piston, they're kinda fragile. Wauw that piston grenaded. Sorry for you for having to rebuild, but once again a great video. Big Up!
Yes you dont save 15 dollar on that bearing if you change piston.
I think the seller ran straight gas through it, then put mix in it, only way i could come up with
"Hear that" - when you know something is seriously messed up and it's going to cost money 🤣🤣🤣
Hahaha
Where'd you get it bud😮😅😊 0:26 @@2vintage
I don’t think you’ve ever lucked out with a “lock up”; but great content for us 👍
I dont even ride dirt bikes anymore & I love these videos. you do a great job, thanks.
This is the only mechanical series I never fast forward, thanks for the great Contant, my friend
I never give up on a job no matter how bad it is, in this case I would have gone straight to working on wheeling it down to some guys garage at 2AM ......some guy I just don't like preferably and then sneaking back home. Job done.
unreal the money this kid has to buy all these bikes and atvs and never has to sell nothing!!you tube is great!!
Lmao he sells a lot of the bikes on the channel and buys more to further the content. You really think he’s just fixing these and keeping them? 😂 he has a couple of older videos of what he’s actually kept. Mostly rare or vintage stuff
The grey plug would tell
Me pri detonation .. woodruff key went and timing got way advanced.
You are the doctor.. love what you do.
Whats strange, is how everything was set to be rich, makes me think they were having problems with it running lean and didn't sort the problem fully, before running it hard.
That is not caused by overheating I made my first comment before the cylinder was pulled off and that looks to be like too much clearance banshees are bad for doing that if you have too much clearance they'll break a piston skirt on the intake side so being that the exhaust side isn't all messed up that wasn't caused by overheating It's either detonation cause the piston to break which it can do or there was too much clearance for the piston and it just rattled back and forth till it broke the skirt The reason it'll break on the intake side if it's too much clearance is because that's the on the upstroke for its compression stroke that's the stress side of the piston that's the side of the piston that all the pressure is put on as the rod transitions to going back up there's always a little bit of side load on the skirt so it was either caused by too much clearance or detonation
Mate while engines out tidy up the frame just with rattle-can blow it all in
I just bought a 1994 yamaha xt350 and the seller said he was rising and it lost compression. He said he installed a new piston and timing chain and still no compression so I got it for $450, got it home and this thing has stripped cam bolts and broke bolts on exhaust. Has 2 bent valves,original piston original timing chain, and bad wrist pin on the rod side. Loving the honesty. ❤
Millenium Technologies can fix/replete the cylinder.
You cannot reuse that rod, the crank has to be rebuilt. The rod itself is the pin bearing race and that bearing was shot. You also have debris in the lower bearing no matter how much brake clean you use.
Hopefully he listen to you but doubtful he will.
Comon man this is joe dirt channel no way he gonna fix it right
He wont listen lol
He's in Wisconsin where millennium tech is.. he knows 🙄.
@@thyreaper650 let him spend 600 instead of 300
As soon as you pulled the cylinder off and saw that piston I was speechless.
I read some comments, i like the idea of straight gas in the tank. my first thought was crap carb, leaned out and killed a fresh motor.
Great work you do and great video. Once you get that top end corrected with new parts should be a sharp running Kawasaki 250 !
Bro your text tone has been the same for so long 😂 I respect it
Bro, engine teardown and rebuild videos are my ASMR
That’s crazy. If you ever do merch, put me down for a “That’s Crazy” t-shirt.
"Looks Perfect !!" I'd buy some of his merch, as well. Hoodies.
That sound off sand from the gloves when he hold the crank make me twist. You do a great job But plz listen to the 5000 comments wash Your engine’s
Lol...
100% not mixed fuel !
Shame , the KX 250 is a lovely bike.
Be hard to source a cylinder for that for a good price.
Ouch, I'd say that was more like a 400 dollar bike. I don't make content so I can afford to walk away from bikes but with the description from the seller, I would have offered very little for the bike. Makes for good videos though 😂
I wonder if somebody put straight gas in it before they rode it ?
I wonder
That !?! or it was running without coolant lol. Who knows 🤔💯
@@just4kicks950 no I seen the coolant be drain there was coolant in it
@@MusicSensations1971 I seen Joe draining the clean coolant in the vid. Doesn't mean there was coolant when it blew. Maybe the person who did the build forgot. Seen a few come threw Honda service that lost coolant or someone working on forgot to add coolant, to do that kind of damage from heat ♨️ . Just a theory anything can happen, it's 2strokes life lol
Usually with a lean seizure you would get lot of metal scooped out of the piston crown, My guess would be someone put straight gas in it.
I hate to be one of those guys tellng you what tools to buy.. but an exhaust spring tool is super nice. I used to use a vice grips as well until i used a spring tool.. night and day. Thanks for the vids n the great narritive you do bud.
I'd guess the bore was out of round an the ole piston slap got it.
Now I’m leaning towards the crank sounds pretty deep when you rock it back-and-forth.
Love your videos! I’m guessing the piston clearance was way off. Cylinder is probably worn out and the grey plug is all the piston debris. Don’t believe it was running lean. Measure the cylinder. Good luck!
Joe, I've done this for YEARS. Believe me when I tell you that you need just a few more things to make your job exponentially easier. #1 - bench vice #2 - parts washer #3 - electric grinder/wire wheel. I'm sure I'm missing a couple of lesser things, but after using these few pieces of equipment a couple of times, you'll never know how you got along without them for so long. They're that worth it.
A vapor hone would be nice too
Ultrasonic bath cleaner is perfect for carbs....
@@harrybosch5720 He has one.
A Handy motorcycle-atv lift table. Get off the floor
@@harrybosch5720 He has one
Great work Joe, to up your game I would use a brass drift and engineer's ball pein hammer, not the builder's claw hammer and socket extension when tapping out those long bolts. Impressive skillset you have.
You Sir have an amazing knowledge of multiple bikes
Chances are his friend ran it with straight gas but if you git that thing up n runnin it is an absolute ripper!!! I bought the same bike for my Daughter n that thing is a lil monster with power everywhere!!!
Wow that thing was super detonating I bet you could probably hear the pinging in the engine it had to be so severe
Happy Days Joe Has Posted 🔥🔥🔥
I would send the cylinder to Powerseal USA for $254 plus shipping both ways and get it fixed right. No sleeve and no buying a $650 cylinder off ebay.
I have seen to many times where a bike is not warmed up enough and get the famous cold seize..Very important to do.
Yes I always warm my yz125 2003 an run 25.1 gas mix
Damn Joe a Greyhound bus can drive through that piston ring Gap !
Great video. Great close ups. Thanks.
$ 1,200 purchase. $400 cylinder repair, $300 crank assembly, $160 piston kit, $ 40 gasket kit. I'd say your profit is gone on this already. 😢
Pretty close my area they still bring 2200-2500
@@TroySmith-cz5jy oh, well. I guess we don't count 🤷 the money from half a million TH-cam subscribers watching his channel because he does the tough repairs. Sounds like yall have it all figured out.
They're $2500 in good condition. This bikes had a rough life. It'd be $2k running where i live.
I had a 96' KX125 Split Fire addition! It was a sexy bike!!
Probably was at a party and reving it red hot burning rubber red hot pipe ect until it broke. Put a new back tire in and sold it
You could say that the piston is half gone or better yet, the piston is half there. 😮
Those knockoff Keihn pwk carbs are usually pretty good actually
@@JoeTheBlacksmith13 Yes, I had a good experience with using one but I replaced both the Jets and the needle.
Joe you have been a unlucky and lucky in this project bike is in good condition but definitely running to lean but you will sort it out mate love your content as usual I’ve just blew my water pump seal on my LC so I’ve ordered the parts to repair it and get stuck in to it
Sweet bike Joe, save her!!!
Vinny didn't do a pre-inspection before buying!
Sometime you get lucky but sometimes you have the worst luck
Lean on oil and possibly an air leak at a crank seal. Gray on the spark plug was metal deposits. Pressure test after you reassemble to make sure the case and head is sealed.
Wrong oil gas mix blow this engine up for sure.
Keep up the good videos 👍
Hey Joe, keep up the amazing content, loving these videos. Inspired me to buy and old 2009 Husqvarna SMR 450 to do a rebuild on. It needs a replacement head gasket, cooling system is over pressurising. I will change the piston and rings at the same time, from your experience which piston would be best to go with? Athena, Wossner, Vertex, Pro-X….? Cheers
I always put a little extra oil in my mixed gas. A little bit more smoke is way better than forever rebuilding them. 2 strokes don’t need a lot of warm up time, sitting idling is what carbons them up. Even using a little extra oil I’ve never fouled out a spark plug on anything.
More oil means less gas through the jet that makes a lean mixture
Either fuel mix or possibly an air leak from the crank seal or intake boot, I've seen the crank seals leak on the older 2 strokes quite a bit.
White plug is a lean, grey is aluminium and oil/fuel mix. I think its called death ash. Piston looks to be la sleeve forged piston. I bet he just forgot to add oil. Cylinder is repairable too, some companies might not provide that service though. You weld with 4043 welding rods, then rebore to size.
Nice bike bro ! You have a knack for finding the deals
By 20:35 it was obvious that the crank had gone. What a pity, that engine looks perfect inside.
My brother had a vertex fail like that in his yz 250 at 40 to1 all the factory jetting and stock pipe
You should turn it into a big bore KX301cc from Kustom Kraft, that way you might be able to reuse the cylinder. They list the price at $650 and are located in Las Vegas. Good luck.
Someone mixed the gas wrong and it should be 32;1 that's what the manufacturer recommends
If they mixed 40:1 would 8% make that much difference?
@michaelesposito6678 yes if you look it up they have done study and the more cycle oil used the longer the life of the piston and the rings and longer compression more too
❤ the channel. A suggestion; make an art of destruction wall, displaying the grenades parts???
I'm a big fan of your channel Joe, but I've never owned a two-stroke dirt bike. Please explain how the power valve works to produce more power
Is there some kind of vortex that it creates or does it increase compression as RPM rises? Great video, you can fix it.
Hey, nice video. That piston is exploded. They should pay more attention to jetting the carb and the needle position. There are a bunch of sites with jetting setups.
Also, I have a suggestion: try not to use PZ bits on Philips screws. Pozidriv (PZ) uses different angles than Philips (PH), and you can easily strip the screw head if you are not careful enough. Some old Japanese bikes use JIS screws which also look like Philips but in the middle, there are sharp corners instead of rounded ones. JIS screws are usually marked with a dot.
I can't believe all these parts are non existent. Mid 90's 2 strokes were some of the best bikes.
They make parts for 20yrs. aftmkt aftr
@TraveladvRajanSRai this is a 96. Almost 30 years old. But still a popular bike. Cylinders are expensive and other parts are getting hard to find. I don't get why aftermarket wouldn't step up since so many of these are still out there. I was going to buy a cr250 to rebuild. The parts were going to cost more then the bike would have ever been worth. That sucks.
I literally called it but waited to comment!!! I knew the skirt broke!! Believe it or not!! Cool bike though!! 16 when that bike came out watching them at Pagoda motorcycle track!!!
If I was you I'd just replace the crank bearings and seals why you have it apart 😊 man I love your vids . God bless you sir keep up the great work 🙏 my bad lol just heard ya say new bearings in the end lol my bad 🤭
Yep. My guess also. Straight gas was put in the bike toasted crank
I've seen this on a very expensive '90 model, was new then, owned by a wealthy racer. I'll agree the fuel didn't look mixed. Other possible causes would be somehow missmatching the topend or a defective piston. In the case of that '90 I mentioned, well. Hot Florida weather and not resting the bike for an entire day of riding. When one rider got off another jumped on. Very, very long and straight dirt roads at full throttle, all day.
Good looking bike, ARGH frustrating putting someone else's puzzle back together
Just bought a 99 that had 225 lbs of compression and a horrible knock. Someone took too much material off the head way too much squish. My wrist pin bearing came out in double the pieces yours did 😂
Friend probably put cheap gas station, boat 2 stroke oil in bike,off the shelf next to cat food.
2 stroke oil designed to run in cold lake water temps,not hot dirtbikes.
Piston started dragging, till skirt fatigued.
Might explain gray on sparkplug. Cooked 2 stroke oil, designed for cold water applications ?
I’m guessing you weren’t actually running lean. I’ve got a feeling that it’s probably just a cheap piston. And what you saw as gray on the plug was piston material.
That is pretty lucky those cases didn’t crack man! Wow!
When taking foreign material out of an engine always check it for magnetism. Knowing its magnetic is good info.
I do Joe set that clip in the middle for the slide and the fuel is 40:1 mixture.
joe those front forks are pushed up way to high in the tripple clamps should only be between flush and 5 millimeters. never seen anything like that.
Look into the exhaust port and look at the piston
If you ever go to look at anything in central Minnesota I’ll go with and be your official haggler! 🤣 it’s not as scary as you think to point out a few flaws and throw a low ball offer at someone and see what they say. I rather enjoy making the deal as much as fixing things. When they don’t run you can never get them too cheap because you just never know what you’re getting into 👍
Freshly rebuilt, but by whom?.....🤔...good luck on the rebuild stay up brother.....🔥🔥❤️👍🏽💯
The previous Joe rebuilt it! 😂
Awsome videos do you sell some of your bikes?
Amazing neither case cracked with those huge piston chunks in it, hey at least it`s only top end.
I wonder if he was running gas with no oil? Also I'm thinking with the plug being gray like that maybe that was metal shavings covering the plug, you know, not that it was lean but just worn down ring got up in there, and I'm thinking the gas may well have been without oil - or the piston just shit the bed and that's how it goes sometimes.
Enjoyed the video.
Damn, I haven’t seen such bad damage in a while, there’s like almost nothing to save here (I mean you still got lucky with the case and rod!)
I have a feeling what saved that case from total destruction is this: He said his buddy was in a jump and it died mid-air.. I'm thinking the lean mixture and all the stress had that piston swollen like a whale about to give birth, she blew on the inside when a little throttle came off and there was no more pressure on the chain from ground contact being lost, she gave way, blew and froze solid with the back lower section of that piston wedged between the crank and the case. THAT saved it.. he probably came down threw it in neutral rolled off and that was that. If it blew at full throttle on the ground, she probably would have showered the track with oil and that case would have been done for. Lucky.. It's no biggie for you though Joe and it'll be a SWEET bike when you're done. I recommend putting a Mikuni carb back on it though... people stop with the junk from scamazon on good old bikes like this..
edit: so the carb does check out, but still.. you really should stick with oem Japanese parts if you can
yup no input from the rear tire being in the air saved the cases! And for people enough Amazon carbs! There's a reason thet're 30.00!
Hey Joe, Been watching for quite a while...Great content! I was watching some Tik Tok and noticed that a channel called "Kyle Corbett Dirt Bike" has a bunch of yor content on his account. Not sure of your feelings about this...Tough break on this bike with that piston grenading and messing up the cylinder.
Those are suppose to have wet clutch oil in the case also for that bike unless it specifics it otherwise in the rebuild and repair and maintenance manuals as we'll to. I guess is it was the fuel mixture was mixed to lean truthfully for the carburetor set-up on the dirt bike.
😮i would check the rod end at the piston to make sure it is in speck , so you dont end up with a loose wrist pin at the piston
Joe, just my friendly two cents… When you have a major and catastrophic failure like that that locks the motor up while running hard, you can't just spin the crank bearings and look at the crank and just say "well that survived. That's good to go"!! That is a lot of momentum/inertia coming to a halt in a hurry. Unless you're doing it off screen and I don't know about it, you should probably be checking that crank for "index" and obviously every crank should be checked for "run-out" before reassembly. I've never seen you check one for "run-out "set up in crank blocks with an indicator. Maybe you're doing it behind the scenes. It's so hard when you don't know the full history of the bike. Maybe that piston was slapping around in that cylinder banging those skirts like a square dance on a Saturday night in the barn?????