When he said "I topped of the oil before you got here" RED FLAG !

One thing I'll mention. Compression testers have a check valve. Otherwise every time the valves opened on a 4 stroke or the piston dropped below the exhaust port on a 2, the gauge would loose pressure, the needle would keep bouncing, and you'd never get a good reading. So the needle not going back down when you stop means nothing. Need a leakdown for that. But great video, I'm binging a bunch of yours. Awesome stuff!

as a 17 year old that buys quads and bikes for cheap in winter and sells them for a profit in spring you teach me alot about these bikes love watching your videos and leaning about this stuff.

My gut tells me he had it running a couple months ago, thats what did the damage. It sat for a while and the mice got in it. then when he started it back up a couple moths ago all those popcorn kernels got sucked into the intake and caused the damage. Everything the kid says follows the story of the engine.

Good move going back to OEM size to increase the wall thickness. All that extra power is totally useless if it’s not reliable. Your def better at diagnosing problems & getting engines tore down. Thanks for the great content & keeping my my mind occupied while I’ve been sick this last week.

You should bring a battery starter with you to all of these buys. I never go look at a quad / bike without it.

You are getting much better at asking the right questions!

Joe you really need to pull that engine out and split it,run everything through the parts washer and Build her back up with new gaskets and I would probly replace the countershaft seal and the shift shift seal aswell.That nasty oil and particulated matter from the worn piston an cylinder have ran thru the bottom end and I would take a peak at the oil pumps aswell.Do it right the first time so u don't sell it to someone and then they have trouble and you end up having to do the job twice.

My guess is he wasn't lying. He did have it running. What he didn't know was a squirrel had put nuts in the intake. How it got past the air filter I don't know. Possibly he had the air filter off to clean the nuts out of the air box. He never noticed the nuts ready to be sucked in. When the piston came up it had high compression which meant no squish area for the displacement so the weakest component failed being the thin cylinder wall instead of bending the rod or cracking the head.

Another brilliant video i love watching these diagnosis tear down videos 👌 you should email a few parts companies and try and get a sponsorship deal with them I see alot of other youtubers working with companies plus you have a good size following so defo worth it for them 👍

Respectfully I don't think you got scammed you got the quad for 1500 where I'm from that quads 4000$ all day 💯💯

I love watching your videos. I just bought a 05 Raptor for $1500 because it wouldn't rev. It ended up being the reverse limiter

thanks for your videos bro, i just recently start studing mechanic of the motorcycle, and i fall in love instantly ,and your channels is amazing! you really go deep in explanations and camera pans, i love it! sry for mi english, im from argentina, thanks bro!!

Definitely gotta do a part 2! Ready to see this thing rip

I watch a lot of your videos dude and to be honest with you you did not get scammed I don't even know how you could possibly fathom that you got even close to being scammed $1,500 was a steal for that machine especially knowing that it was rings that was stuck like come on man that's a $4,500 quad all day long and those things are cheap as s*** to rebuild if you do it yourself I like your videos man keep doing what you're doing but you definitely didn't get scanned

I think the seeds in the cylinder caused the failure. Check your air filter after storage people. Or just service your air filter often.

I don't believe you tried starting it without at least cleaning the carb

As long as there are fruit grains under the valves, there will be no compression, and when the entire cylinder passage is filled with grain, the cylinder wall must split. The head gasket did not fit the cooling channels. Thanks for the good broadcasts.

Compression will not decrease on the tester. Unless you press the pressure release button. Not sure how you were watching it to see if it dropped.

Love your videos! Very knowledgeable! Unfortunately there's allot of dishonest trash in the world. People saying u didn't get scammed because of the lower price, lol, it's still a scam because you flat out got lied to and the "we topped of the oil comment" is a dead give away. Anyway great job on the videos! 👍🏻

My opinion, judging by the sand and stuff on the piston, is, that it went under water.

Those are maze seeds. Mouse definitely had a little winter stash going on lol . .

Great video! Just got my motor back from a shop, on my first ride the oil drain bolt fell out on the motor... Thankfully I caught it before it starved of oil! That would have been a few grand down the drain! Check your bolts even if you send it to a shop!

"I don't know if you remember me..." "Were you there?" "No".... How's he supposed to remember you then?

Pretty sure there is a one way Schrader valve in the compression Guage whick is why you have to hit the release button to de pressurize. A leak down Guage would loose pressure if there is a leak.

All in all it wasn't a bad buy and your going to have to put less into it than you had thought you might. I feel if the guy would have told you there was possibly a blown head gasket you would have still bought it he may have known the cylinder was cracked but then again maybe not. Sounds like the seller really lost his ass on this one. Thanks for another interesting video.

I love your videos man keep up the good work

Good deal , I would just be the guy that brings a extra battery to see if it starts and see how the idle is and if it smokes and what not , cheers to your and your motivation for wrenching on these

You should make a check list . With your experience you should make a list to go by, like 5 things that you normally forget to look for. Great videos bro. Keep it up.

There is a decompression mechanism on the cam so maybe check if it’s stuck? You can get cams without decomp too

I always buy new now never used 40 years of buying used stuff tired of working on it but you keep on rocking your young.

Hey 2vintage, I love your videos and how you explain everything. I was just wondering if u could try buying a Honda foreman trx500 utility. Would love to see a video on one cause that's all I have to ride and you just make everything that much easier to learn

You should do more videos of full engine rebuilds

Was waiting on this one 😅 these yfz videos get a lot of attention 👀🤟🏻

Better title would have been 'I was lied to when purchasing this quad' and even then not completely provable. A rebuilt YZF quad with aftermarket parts for half the price of listing is a pretty good deal especially if you do the work yourself. Great video as usual.

I'd check the O-ring seal around the water pump it could be bad causing it to leak into the engine. Usually that's A sign of leaking water pump.,or bad one witch causes it to overheat the engine block. Then it blows out the head gasket in those YXZ engine's. YZ engine's to.

Always go through scripted order checklist . Battery Pack and compression tester A Must . Keep the videos coming young man your doing a great job.🇨🇦

God dang, I'm learning so much from these videos.

you need to tell us more about what youre looking for when panning the camera around the potential buy other than that i love the videos!

I enjoy watching your videos. I learn a lot watching.

5 minutes in and these guys are SHADY AS HELL!! It seriously looks like that 2022 reg sticker was pulled off another cycle and stuck on there.. We'll see if you can find the vin on there, but i'd NEVER buy anything without a vin, even if it was free.. Nope. Not doing it. Love your content, well you see I comment on every video you do awesome awesome work!! Thanks for the videos! edit: you know what though, thinking about it.. I'm from Southern New Jersey. It's VERY fast paced here.. If I go meet up to buy something expensive (1500 bucks is expensive if you look at if for possibly getting burned) anyway, if you're not 100% about what you have, what you claim to have thousands and thousands of dollars into but are going to part with for 1500 bucks, and you're not 100% of what cam you have, what bore it might have, what brand piston it is.. nah bro, why are you even talking to me? But. It's different where you are, and I get that. But.. around here, nah man.. I'm not beat

2vintage man ur a good guy really informative videos just know man theres people out ere that really appreciate u and ur content just wanted to say this man peace out

New subscriber, so I haven’t watched all the videos but I love your channel and I’d love to see more videos of you buying these machines

Joe check the fly wheel moon key on the crankshaft it could be sheard of inside to. Causing it not to start up.& Run again along with having no compression to.,or A bad camshaft one on the top end witch throws the valves off to due that reason alone. Cause they can drop.,or loosen up from having A worn out camshaft inside of the top end to.

There’s always a steady supply of messed up 450’s out there for sure. These machines take a lot of maintenance and can be reliable for some time…no maintenance= time bombs. I prefer Raptor’s or even LTZ 400’s…much more reliable. Fun watching you figure out the failures and making it right.

Keep up the good work! It really sucks whenever you get scammed. Good luck!

Not sure you were "scammed", as much as just case of ignorance. Seller lost, and you benefited off his misfortune.🏁

Awesome video but bummer deal!! I just checked on ebay. Plenty of cylinder jugs. Few new several used! Just thought would be of interest to you! Good luck dude!

Love my YFZ 450. Still a good buy. **Dude!!!ALERT!!! That blown cylinder had a coolant port the gasket didn't have.Did you notice the gasket covered the coolant port right next to where the failure occurred??? Lay it back on the head and count the ports...there is your answer.😁👍

My 01 WR290F had the manual decomp system removed when I swapped the cams. Now it kicks over smoothly almost like a 2 stroke. I can start it with my arm if I give it a good one. Definitely look into it.

Was all the grit from stop leak they put in the radiator possibly? Great breakdown.

I use pretty much same stes as you do when doing initial checkout, I also do a leak down, then compression test.

It looks like it got ridden through deep water and hydro locked. Would explain the cracked cylinder and all the gritty stuff in the cylinder as well? Idk just a theory

Really great videos, I have recently subscribed and you do a great job of explaining what you’re doing while you do it so for a newbie to ATV,s the information is invaluable.

Check the CDI box.& The stator pick coil.

That can do it to. It might just be low.,or have A bad water pump if it has A radiator on it.

Dude I need to move there that quad in my area would still go for the price he was asking no problem here in Ohio Great buy

Always a great day when 2 vintage posts

This just gave me bad flashbacks to my boat . Block cracked in 2 places. One weekend ,JB weld been running great for 6 years..

Got to say you have came a long way and it sucks low life's out there still feel the need to lie hide and scam about stuff when you would have probably bought the bike either way good job man keep up the great work.

I've built countless 4-stroke race quads for Baja, MX & XC. I've never used 'big bores' for them. Always stock bore, usually stroked, always ported. Ported, oversized valves, stroked, high compression pistons gives sooooo much more power where you need it AND more reliability. Cylinder walls are a main reason. Big bore cylinders are junk. Granted there are exceptions, like LED big bores for trx250Rs and such. Btw. What is all that crap in the intake and on the piston? You probably want to COMPLETELY rebuild that carburetor as well😬

Your buying quads like a mad man!! 😂 love it!

You should have done a cylinder leak down test before pulling the head. You can make an adaptor to fit your air hose to that coupler in your compression tester. With that oil I suspect that the head gasket is gone but with all those seeds I suspect that a valve is not completely closing. Since you jumped the gun you will have to grind the valves anyway.

Wow , nice score and exceptional experience !!! Lots of high end components 👍👍 i drive a Tundra too joe , have worked for Toyota 25 years now !! Imo you have best channel on the tube !! More mx bikes though lol 😆

That's gonna be a sick quad when it's completed

If one invests in upgrades and sells the machine before the upgrades are worn out, one can expect aa little more money for the machine. Seems like some kids believe they can pass the cost of repairs, including the cost of consumables such as chain and sprockets, spark plugs and tires on to the buyer. Can't do that kids. You've had all the fun on those tires and engine that wore out after many hours of riding or less hours and neglect. That money is what you paid to have your fun. The next owner will incur their own expenses. Learn to be omnidirectional and drop the one way thinking, it's a bad look.

When using a compression tester, it doesn't trap the compression in the combustion chamber it keeps it in the gauge . You don't get scammed when buying something that you know it doesn't run . The seller can tell you anything they want so you take it all with a grain of salt

you can remove the compression tester Schrader valve and apply air from the air compressor to test valve seal in the combustion chamber

Could you try to find a Polaris outlaw 525? That would be awesome if it works

That is a good buy, I would snatch it up.I wonder if it's got a decompression thing stuck open or something.

Just o5 and o6 need oil mod. Fyi if you unload the quad from the truck stand on the front brake lever side and use the brake to control the unloading down the ramp.

Comp going out through carb. Set intakes to 6 thou if those cams are even a little off it gonna run. My 660r that's got the 686 stroker kit on it was fun to set with two hot cams and two new race carbs that are a pain to set up, screws underneath, had to buy special tool for it but she rips and starting it, it will pop right off

I don't see how you got scammed even with the sellers story? I think if you paid 2600 for it then I would agree. Anyway, I love your content and ability. Great stuff Joe!!!

I think sometimes Joe conflates "what they go for" with "what they're listed for". The $4000-$4500 listed YFZ's sit on marketplace unless it's like new or completely done out.

Just discovered your channel tonight… and watched two of your videos… one thing I noticed is you kick and crank on things way too long.. that obviously aren’t going to start.. and like most people when shits starts you immediately wand to wind it up without letting the motors warm up.. also I always check the air filter when contemplating buying something… if you had you would of seen the mouse seeds and there’s no reason you couldn’t of cracked open the drain bolt to see what came out… especially since it didn’t run… still you got a good deal… anyway I like your channel.. your doing what what I always wanted to do… the buying, fixing up and selling of power sports.. lots of car channels but not a lot of your type… I was hoping you had a KDX200/220 rebuild video.. as I have one but have never rebuilt it.. it probably has 5000 miles on it and still runs perfect… so I’m reluctant to tear it down… last question.. is there a sequel to this video? As I see it’s 11 months old.. I don’t see one.. if there is please post a link.. thanks oh…

It's A blowout head gasket.& Possibly bad water pump back flowing coolant inside of the engine crankcase block port holes.

Getting scammed by locals really makes me lose faith in my community. Too bad

Literally why I never big bored any of my quads.

I was actually wondering about the tailgate because I never saw aftermarket lift straps.

Great vid, yeah for sure even if you add a few greens its still gonna be a killer deal.

$1500?!?! Great price. Even with parts and labor...you should come out ahead I'm wondering how those seeds got through the carburetor into the combustion chamber. I'm still learning how stuff like this happens

Don't worry 2vintage I got faith in you ❤️

You should run raffles and give away all the toys you buy after every video. You buy merchandise you get an entry. Just some advice to capitalize on your growing chancel. Love the videos.

Just got one for mine for 129 with all parts and gskets. That 450 hasnt ran in long time. Have one we held on to in the shop someone tig welded the crack and sleeved the bore. Cant believe it was working but it was running when it came in,we replaced top end and it was perfect. Just funny to see that crap. Not often but once in a while get a doozy in.

The scam was the blown head gasket, and I bet that cp piston was high compression

I want a yfz !!! Good luck

i seriously wished i lived in a big country like the US or Canada where i could also make a living on KZfaq buying, fixing and selling recreational vehicles. There's a massive market over there and plenty to choose from. I have all the tools and know-how but just don't have access to enough vehicles to make it full time or even part time really. My country is small and the market for quads and bikes is just too small, and so everyone here wants top whack prices for scrap and aren't easy haggled.

You need to get a small 3 volt sure fire flashlight, love em here. Save my but a lot. The valves are way to tight, I'm betting.

Now you have 2 of these completly tore down lol

Not too bad really joe suppose things could have been worse be good to see it built back up and running and if you do sell it on it should make good money I’d call it a win I know it’s your time fixing it but will be worth it for defo take care man and all the best 👍🔧🔧🔧👌

Bro, compressor tester doesn't go down by itself. Lol

Non respectfully it's about time

What's up with honda trx 700?

“Flat battery, and I never tried kick starting it…….” 😂

I never trust anyone with buying bikes anymore this world is so screwed up at this point

A way to weed out the scammers on non running vehicles is ask if you can bring a bore camera. If they are lying they will either say no, tell the truth, or ghost you. Saves you time and headache. If they have no clue about the issue, then if it is messed up severely thats leverage for a cheaper price.

2vintage has the newbie buyer stamp all over his body. 9 out of 10 times he buys the mc/quad/utv/etc in THE DARK using only his mobile phone as a light source. ALSO: If the whole family / neighborhood shows up to the deal I would turn around fast as fkk. ONLY the seller can be there. If he is a minor then at least one of the parents must be present. Nobody else.

Reverse the wires on the switch, clean the carb then check for spark, guy might have hooked wires up wrong, also mice's cash crop might have made it into carb.

I agree, poor choice of words on his part, he definitely didn’t get scammed. Seller told him everything he knew, I believe he got a killer deal. No scamming going on here.

1500 and you got scammed? I did click to see why tho so it worked. What do you call that again? Click something?