Quickest Way To Tell If Your 2-Stroke Is BLOWN !
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- Опубліковано 29 вер 2024
- "Seized" here refers to partial piston seizer, not totally locked engine, where the engine still turns over, but something ain't right. Not just worn out, but scoring that needs repair.
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-Sparky
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"Seized" here refers to partial piston seizer, not totally locked engine, where the engine still turns over, but something ain't right. Not just worn out, but scoring that needs repair.
My 2002 ktm 125 seized up on me and I can’t kick my clutch, it’s stuck. What do I do?
It's called a soft seize.
A hard seize is a scary thing and can kill you.
I ride 2T moto go replica street bikes. You don't play going 100mph+ on the highway with traffic or on the mountain twisties.
I bought one that was locked up. It got water in the crankcase and must have sat for a while because the crank bearings were rusted up tight.
I have a serious question. I went to kick start my 4 stroke and played with the tune to try and get it started. And when I kicked it smoke came out of the carb/air filter. Don’t wanna kick it again if it’s something serious. It didn’t start it when I kicked it /when the smoke came out.
@@mikosdavon6493well first of all maybe try not to kick your clutch
Why does he keep saying seized ..it's worn not siezed
This why we need thumbs down back. And he said how he wasn’t going to waste our time and added in unnecessary time wasting antics tryna be funny
Or “scored”
It looks like a little oil might help
@@kaveh1836 ……are you human? I enjoyed the fact he had time to joke around while still informing us quickly
@@slick5591 right this dudes Butt hurt😂 his bike probably locked up that’s why he was even watching this video😂😂😂🍋
Cool .. nice simple easy checks 👍
Also do you know what the compression ratio should be on a 70CC 2 stroke scooter?
6,5-8:1 mostly with 98octane european 98e5 gasoline. Every tuning cylinder is different if you mean the max compression.
hey bro i have Kawasaki GTO 110cc a 2 stroke bike compression is about 160psi is it good?
Yes, you should be good
Scoring marks..only the top end ?..you mean the whole top end including the barrel?..scoring marks would indicate you need a rebore of the cylinder don't u think..150 to 180 is good on 125..180 to 240 is the range of a 250 or bigger
You are correct, this video is just for determining if it blew when you really don't want to look, or know
The enduros have alot less compression , my Dt200's are 130 to 135 after a few heat cycles
Compression specs on a PW 80… Anyone!? 🙏
You can download the manual as a PDF file just Google it. I highly doubt there's anything wrong with it tho those things are bulletproof aslong as you have keep oil in the tank, it's under the seat and the bike mixes itself
Good Day again Sparky : If you want the compression pressure on any cylinder , the math formula is to multiply to-day's atmospheric pressure ( 14.7 psi ) X engine compression ratio ( maybe 9.5 : 1 ) . Check your owners manual for your exact comp ratio . For example 14.7 X 9.5 = 139.65 psi compression pressure on a perfectly sealed cylinder . This is the text book formula . It doesn't take into consideration the slight loss of compression due to ring gap . Bye for now from Toronto ...............
I'm a super duper beginner just got meself a dirtbike without my parents knowing super stressed out about this stuff but you make my life a lot easier
How’s it going bro? Still got the bike?
Yeah man how'd it end up workin out ?
@noahhamilton9028 just a quick top end and she's good as new
@ShadowJack4488 yep had to do some more work since, but still a blast to ride
@@Joseph04film HELL YEA! Love to hear it bro. Never ride faster than ur guardian angel!😂♥️♥️
Great video. Much love. Yz 250 rider. 95. Old but gold. Plenty competitive for hare scrambles for me. Keep making videos.
Or if the rear wheel locks up while riding likre my 2022 KTM 300 xc tpi did 2 times while under warranty. ugggg.
I’m thinking about buying same bike. I’m very curious if you are serious or not? Especially when 30day warranty here
There is nothing more annoying than long winded tutorials. Thank you sir
1000%
This guy has no idea he obviously watches other videos to make his !!!
I didn't think I could get so annoyed in 2.5 minutes.
Partially seized? Ok?
Sometimes top end problems aren’t top end problems could be a plug fouling out or a carb issue if your lucky
Not if your piston is scraped up like that
You keep saying seized the bike your working on isn't seized. If it was you wouldn't be able to kick it. Dose it need a cylinder and possibly a cylinder or bore yeah.
What is the minimum compression for a 49cc old 1981 MR50. Or what should it be?
Thank you
This is advice from the 1970’s 😂I’ve never blown a two stroke up over 30 mx bikes two and fours ! Kicking the fuck out of it will only cause more damage! When it stops you stop.
Who are you!!? Hahhaa I love it you’re funny as shit!! Thanks for the information
the real best way is to use the kickstarter and if you can push it down with 1 finger that shits blown XD
Can you blow up your bike if you try to start it but you forgot you have no gas
Wouldn't it not be able to move if it was seized????
the easiest way to check compression or check if its siezed is to kickstart is and feel the compression that way. if the kickstart doesnt move its siezed. if it falls right trough it has lost compression
Awesome sound effects in the intro!!! Especially when the motor dies lol. Made me sub.
Well it won’t even kick the kick starter
dad jokes NOT NEEDED
This man’s gonna be famous no 🧢
Fully intend to make this my job, watch out, more on the way!
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Really well done video good stuff man
To pipe the pull, t p put take this off
Is it expensive to fix?
Hey I’m pretty sure I blew up my cr85, it has very low compression and most importantly it rolls back and forth freely as if in neutral when In gear instead of stopping after a couple inches like normal so can this be fixed easily by getting a new top end kit or is it something more serious since it’s rolling in gear? Would really love some help!
Start with a compression test, but it kinda sounds like you need a top end. It could also be transmission, but a compression check will let you know
Hey sparky any chance u could give me ur thoughts? I picked this bike up dude said it ran but ran wide open so he turned it off n it has been sitting since when I got it home I looked at the reeds I think they are fine fr I cleaned the carb and shot some starting fluid n it and gave it a few kicks compression seems ok not great but okay and it seems like it wants the start n then it will die right out also when I put the bike into gear I feel it change gears but it just roles like it’s n neutral
For everyone watching this guy doesn't know what hes talking about!!!!!!!when a motor is siezed it means it is stuck or locked up. The easiest way to tell is if u try to move the kick starter and it doesn't budge at all, [not what this guy said his motor is just worn and might be as simple as getting a new piston and rings to fix.] A siezed motor and can happen 2 different ways 1 being a top end sieze "when the piston is frozen in the cylinder or a bottom end freeze when the crank is stuck.. Either way you can check if your kick starter won't move. A lot more serious problem then what the video tells
Any good gynaecologist could have given the same advice-you can tell a lot by staring up the exhaust port, or in the gynaecologist case up the inlet manifold !😂
It either will not kick/pull over at all - it’s completely stuck (chainsaw)… or, the bike lost *all* its compression, after a hard run on the freeway… (F7 Kawasaki)
if it seized piston it would lock up the back tire not go buuuu the first paragraph needs rephrased 🤷♂️
Regular compression checks. Use a see snake down the sparkplug hole. Pull the header and inspect the piston. Inspect the plug. Look for scoring or blow by.
A tip for not blowing your two stroke... STAY OFF THE DUNES!!! Shits so hard on bikes
My ktm 85 has been laid up for awhile and I needed to get my carburetor cleaned as the jets got clogged and was a bog noise when reving . So now that's sorted I took it for a spin and basically when I put it into first gear it conks as soon as I leve out the clutch but yet when I run with it kick it to second it goes perfectly. Plz help 😢
2 strokes are litterly the most easiest engine to rebuild, just a piston no valves or timing to worry about you can fully strip and rebuild a top end on the kitchen table in under an hour you make it sound like a hassle 2 do lol and also a siezed engine means its locked solid that engine is not siezed! any 2stroke thats been ridin has scores on the piston 😂
Just found your video wish u didn’t stop making them pretty good vidja
Your video just made our night. We got our son a bigger dirt bike. The guy said that it probably needed a new top end.
I watched your video told my husband what was the compression on that bike he said over 100. inches I said it’s not broken cheeked it out put new fuel in it 3 kicks and that bad boy fired right up.
the quickest way is to kick it over & you can feel straight away if it's ruined or not.. no need to mess about
Well my ninjas toast. Already knew the second head gets hot an by the exhaust. Today I started it didnt really wanna go was a real low idle so I stopped it re started was checking it over. An smoke was coming from the left cylinder out a hole in the cylinder gills its ment to be there but also looked like it was coming out the spark plug. I did tip it on that side last time but. I know it's been getting hot an before I stopped riding it it would get hot an not cool down. Mind you i almost had it go one day blew clutch in my face an iv also drove the crap outta first one day. An it's always had a weird thing with the gears sometimes. I'm gonna go with the top ends toast. Gonna also look in my exhaust cause its trash anyhow an pull the spark. Drain the oil an see hopefully the oils good still. May have to wait to do that so I can get a new filter an cut the old one. Eh I got my fun outta it. I thought it needed a head gasket but now I'm thinking it's a tad worst than just that
Great Vid keep them coming
Bro pls make a video on how to rebuild and give tips bc I’m about to dive straight into a yz85 top end wish me luck
Pulled the head off my kx and the piston was cracked in 3 different places and the cylinder sleeve was cracked in 2 different places was still able to start but little to no compression… looking to do a full rebuild on it but now I need a whole new cylinder don’t know if it’s even worth it at this point.
Is that a 125?
My dirt bike I just got didn’t shut of but won’t start and there’s gas in the exhaust
Hes right the visual method lets you see the wear on the cylinder and condition of the piston, i have done this for years, it works
all u need to know if u can start it with ur hand its bad compression
Hi mate how to I check the year model from the vin ?rm85
What if you can't move to kick starter😢
It is damaged not sized that means stuck" ie" not moving sized.
what about turbo noises and whistleing? :DDDD
I was riding around on my 2 stroke scooter for months after the oil pump failed and it siezed I don’t understand how the thing still ran and ran fairly well it was covered in deep scoring
Or just see if you fell compression on the kickstart
Thank u for not making a 45 minute video on this.
You can no longer buy the oem cylinder for that bike
What bike is it ?
@@bertram1st 2002 yz 125
@@bertram1st 2004 YZ125, last year before a model change. But it looks like the new ones with the plastics upgrade kit
I had to use an Athena cylinder, see the other video for top end rebuild tips
Thx for getting to the point.❤
Couldn’t of said it better myself , but surely not every cut out an it won’t start again is a blown top end 😆.. I am going to investigate today with a new plug an compression tester but we’ll see god dam it 😅 fucking two strokes it’s had a rebuild 260 miles ago too and bottom end 🤷♂️
Guys I bought a fr 80 and I clean the carb tuned it it started up rode good but u put 32:1 and it blew on me I have no idea why the bakc wheel stopped bike started slipping and I can’t kick it down would it be the full engine ?
Lol you cleaned the carb and tuned it but you can't get the mix right 😂
If your bike won’t kick start but it will bump start do you think it’s because it needs piston and ring?? I’ve checked spark fuel and air and I’m getting all, just seems like it doesn’t want to start on kick And my plug gets wet fast. Also my power valve tube is leaking more then usual. Do you think unburnt fuel and oil is getting by my ring ? It died in traffic one day and will only bump start. Ram strong for an entire year on my last top end rebuild.
Definitely want to do a compression check, 100psi is minimum, but 100psi is also a little worn on most
Pull the pi pull the pipe o take this off 😂
My yz125 seized a little while ago i replaced the piston and shaft but it just seized again not 2 weeks later
You most likely have an air leak somewhere, you need to do a leak down test
Can u do it with gas in the bike
Should the length of the compression tester u screw in, be the same length as the spark plug?
😂
1 - it is dead
2 - it doesn't run
Thanks for your info and sharing . Other older methods are equally as good such as 1. Can you re-start ? 2. Do you feel that same compression on the kick starter as normal ? 3. If you gear down while decelerating does the bike have that same engine braking as normal ? If you've answered no to these 3 questions you most likely have a blown piston or a scored cylinder . Bye for now , I liked your video . Can you do a video about de-rusting the inside of a steel motorcycle tank ?
Gotcha covered! See my channel for the rusty tank vid! Thanks for watching!
Rent for free! 🤔
I love how u used the wheelie video at the end 🔥🔥🔥
Dope video bro look forward to more of your content just subscribed and hit the bell. Do you answer bike troubleshooting questions?
Sometimes, hit me up
@@SparkyMotoappreciate it bro. I got a cr85 I just rebuilt the top and bottom , kept the same bearings , replaced crank seals . I got the top end off offer up (wiseco) and when it starts up it smokes helllllllllla bad. Definitely not natural white smoke and looks like black oil dripping from exhaust. I read that it could be either crank seals (I definitely replaced those) or bad piston ring. I’m thinking I screwed myself by buying a supposedly new piston set on offerup but maybe the ring isn’t in the best condition for whatever reason? What could be causing the thick unnatural over strong 2stroke smoke.?💨
where you got that plastics
Rocky Mountain has the upgrade kit, but other places have it too I believe
simply on point
Good video, thanks for keeping on point
Lol dude this video made me laugh when my bike was messed up. Thanks
If the “mechanic” is telling me a free spinning engine is seized ima tell him he’s full of shiiiii
Mine you can’t move the kickstart or roll the bike in gear good sir that means it’s seized yours is normal wear and minimal maintenance