When the bearings go they’ll let you know. Usually the sloppy bearing will torque the main drive gear seal just enough allowing the crank to suck in transmission oil causing lots of smoke out the pipe. EZ fix with the right tools, time for a full rebuild. I just did my KTM 300 at 550 Hrs. Good vid! 👍

@krotchlickmeugh627

2 жыл бұрын

Lmfao youre conflating a crank seal failure with a crank bearing. How cute.

@slagletoby

2 жыл бұрын

@@krotchlickmeugh627 you’re just one of those jerks on KZread that nobody likes. Double freedom rockets to you 🖕🖕Nobody likes a loser GFY!

@PenttiHinikka

2 жыл бұрын

@@krotchlickmeugh627 just keep making sandwiches cos you dont understand mechanics

@krotchlickmeugh627

2 жыл бұрын

@@PenttiHinikka nah. Just own a thriving powersports repair shop for 10 years. I know fucking nothing at all. Must have been a fluke i have made over 100k a year for 10 years. Totally clueless. The irony is palpable insufferable swine.

@krotchlickmeugh627

2 жыл бұрын

@@slagletoby says the dip shit. Nice

Thank's this is the first good example of crank bearing noise I have ever found on youtube. It's the exact same ratteling "rrrrrr"-noise I have on my scooter, but less loud ofc.

That doesn't sound like crank bearings. That sounds like a wrist pin. Notice when you rev the engine it puts the piston underload and noise goes away. It could be the wrist pin itself, or the needle bearings between the wrist Pin and connecting rod. If it was crank bearings they noise would get even louder and rougher as the RPMs went up. The noise goes away when under acceleration, check your wrist pin or connecting rod needle bearings.

@robertutley9768

2 жыл бұрын

i dont think the noise goes away i just think the exhaust is to loud to actually hear the noise

@paulkarp958

2 жыл бұрын

The motor sounds abused so unless we know it and he is adding a few words its basic troll.. the sweet sneakers and 8.5/10 leg kick when off the bike are great 🙄

@kalemathews1899

Жыл бұрын

I thought rod knock got louder with load?

@sub_to_sence_equalsbig_pp1766

Жыл бұрын

@@kalemathews1899 crank bearings get louder too. Piston slap or needle bearings stuff on the piston or connecting rod that’s worn down will get quite in the high rpm’s

@jasonhodkinson9297

Жыл бұрын

Yeah could be

Sounds perfectly normal

You won't know what bearings have gone unless you strip down the engine. Anyone can post a video with a noisy engine and claim it's a particular part but they won't know for certain. This is only helpful to understand there is a problem and it needs to be addressed.

@BrendanDunne94

2 жыл бұрын

Cool 👍

@johanrichards7412

2 жыл бұрын

I would disagree... Years experience and a person can distinguish, not al bearings sound the same when they die.... Especially on motorbikes. A failing gearbox bearing would noise when you move only a crank at idlings there is only four... Two on crank and two on balancer shaft...easy

@abc-yl9ft

2 жыл бұрын

@@johanrichards7412 what if you have multiple failing bearings? For the untrained do it your self mechanic this would be difficult to diagnose would it not?

@sub_to_sence_equalsbig_pp1766

Жыл бұрын

@@abc-yl9ft it’s pretty easy a crank bearing (gets louder in higher rpm) piston slap (sounds soft an gets quite in high rpm) needle bearing (sounds worse then rod knock but gets quite in high rpm) wrist pin (never had a wrist pin problem so can’t really say)

It's amazing how far a,2 stroke engine can deteriorate & still keep.running . I lost an oil drain plug during a x- c race on a 89 cr250 , bike was stalking going into corners, squeaking , I finished the 3 hr race ,so, the following Monday, I'm spray washing the bike , notice the drain bolt missing . Huh. There must have been enough motor oil film to keep the transmission shafts spinning , i wasn't needing to use the clutch a lot ,my FMF gnarly pipe really added low & mid rpm power , no need to abuse the clutch , I shifted without clutching a lot, when it was really bumpy . 50:1 Maxima super - M premix kept the crank & piston happy . Thanks Honda ! Tough as nails bike . I could write a book about what i put that bike through ....

@comox_valley_gsxr

2 жыл бұрын

*I'll take things that didn't happen for 500*

@richardkey4289

2 жыл бұрын

@@comox_valley_gsxr it did happen , & I don't care if you believe it

@tavecooper7793

2 жыл бұрын

Them older Honda’s in general were almost bulletproof man. They basically made to run forever haha. I still prefer the newer stuff tho because I like the speed/power, light weight, and perfect handling. But nonetheless I can’t hate on them older Honda’s. Tough as shit and made to last 💯

@slipknotfan5475

2 жыл бұрын

@@tavecooper7793 what do u think about Honda XL 500R and MTX 80 C HD06 ?

@JusticeLogic819

Жыл бұрын

In a two stroke the gearbox-drivetrain oil does not touch the main bearings or engine, the only lubricant is that in the fuel, so the only damage you would get is on the gearbox side,not engine.

I always thought that sound was normal with all 2 strokes

@hommyy-c5494

3 жыл бұрын

yeah me too i have a 1990 suzuki ds 80 and as far as i can think of it alaways made that noise not meaning its normal but its fun to learn something new

@JohnBrown-km1by

3 жыл бұрын

It is but not that loud and knocky. It needs bearings

@Community-Action

3 жыл бұрын

The knock is louder then normal. Can differentiate the noise better in person.

@haydenauten285

2 жыл бұрын

Hear that low pitch knock that's the bearing

@spacee3249

2 жыл бұрын

there is normal two stroke noise, but mixed in with it is the bearing noise

My93 cr250r sounds just like this has fresh rebuild on it no oil leaks all new seal power threw the roof first kick everytime awesome ride this sound don’t mean nothing

you can take the side cover off and try to move the magneto/flywheel in and out

I thought you were going to do a burnout against the wall till it seized. I’m disappointed. 😔

They run the best right before they blow

@siccicey9479

2 жыл бұрын

LMAOOOOO

Thank god you posted this. Been trying to figure out which bearings went on my bike for a minute

@krotchlickmeugh627

2 жыл бұрын

Lmfao. Dont act like a youtube video is diagnosis of an issue.

This sounds like a small end bearing to me. I had a Ducati Pantah 600 that blew the small end bearings and that tick tick at lower revs sounds quite similar (given this is a 2 stroke). Given this post was from 5 years ago I'm guessing you are relentlessly punishing something else by now, and have diagnosed what would have been a terminal issue.

@BuckingFastard

11 ай бұрын

Sounds like a crank to me and I have the same bike…

Mate you must've thrashed it. Siiiiiick....

I want to smell the smoke！

@richardkey4289

2 жыл бұрын

Go To an off road race , there will be a mix of different 2 strokes, running different brands of pre mix oil . I like Maxima super- M 50:1

Sounds Good Send it Brotha!!!!

Crank bearings are lubricated by the pre mix in the gas if your running lean the bearings will go out faster than if not just to let you guys know!

Sounds like a flogged out clutch basket to me

That’s exactly what mine sounds like. Thanks been looking for something to know for sure that’s what the issue was. Which side is the bearing on left or right?

@harrynichols4707

2 жыл бұрын

Bearings meaning 2. One left one right

@shorelinefilms9661

2 жыл бұрын

My advice is to replace the whole crank. Don’t just split the cases to change one bearing.

@BramVanhautte

2 жыл бұрын

@@shorelinefilms9661 Why would you spend money on a new crank if the old one is perfectly fine. Only in the case that the bearing got seized ofcourse.

@krotchlickmeugh627

2 жыл бұрын

@@BramVanhautte lmfao if the bearing has been bad. Your crabk is most likely bad too. Rod bearings mean shit to you? Its the mechanics job to check and replace everything damaged. I have never seen bad crank outer bearings go bad and rod bearings still be fine. Or the crank still be true.

@martimjorge5794

2 жыл бұрын

@@shorelinefilms9661 nowadays people replace the entire crank because it's easier tnah replacing the rod and crank bearings, if the crank is still fine there is no reason to spend hundreds of dollars on a new one

Didn’t know Elon musk was into two strokes

@BrendanDunne94

2 жыл бұрын

Yeah, I didn't like the smell so I started making electric yokes.

Sounds like a Hydro discombobulated ring

Sounds MINT. Hold to tha floor put tha piston through tha seat!!!!🤘🎊🎊🎊

When the bearings go they’ll let you know. Usually the sloppy bearing will torque the main drive gear seal just enough allowing the crank to suck in transmission oil causing lots of smoke out the pipe. If that doesn't work usually you will run into other problems that will surely let you know. If you throw a rod or abruptly seaze the engine surely it has let you know there is a problem. I just did my KTM 300 at 15350 Hrs. that was showing a code on my scanner for bearing failure, I was surprised to get hat many hours ou t of a two stroke, Good vid! 👍

@BrendanDunne94

2 жыл бұрын

So long story short I actually bought the bike and done a slight "restoration/rebuild" I spent €€€€ on it without touching the engine, this was the day after I completed it and I realised there was something not right with the motor. Oh well, lesson learned! Ride safe my guy! 🤙

And so, a moped in appearance, a bomb

I had a blaster that made that exact sound. Wasn’t the bearings but it was piston slap

@joski9030

2 жыл бұрын

Hahahahaha air cooled slaps like mad you people ffs

@joski9030

2 жыл бұрын

Unbelievable what people put up and know absolutely nothing just maintain you’re bikes it’s not that hard then you’d save yourself money in the long run.

The pin is about to fall out of that hand grenade

Your videos inspire me

@BrendanDunne94

2 жыл бұрын

If you want an autograph I'll be doing a live meet on the 1st

Nice to share... even when it's bad. We can clearly hear something wrong. OK BUT... WHERE DID YOU GET THAT FREAKING COOL DECO SET!? Very very nice. 👍

@BrendanDunne94

2 жыл бұрын

Thanks dude! I got them made by a guy in norther Ireland.. I think his shop is motoXgraphics

@renaud67rallyeRS

2 жыл бұрын

@@BrendanDunne94 thank's for answering!

Just add more oil to the fuel

Thanks for the info good to have

bad is a understatement🤣

That's the rod bearing..

Sounds like a diesel😳

i get a similar rattle but it is with the gearbox/clutch. after warm up, when i let the clutch go in neutral, i hear this noise. pull the clutch on, it stops

@marqueeceavella8505

6 жыл бұрын

Quintin Humphreys mi kx 65 doin tha same thing

@tpghl5225

6 жыл бұрын

Quintin Humphreys did you fix it? My cr125 doing the same thing

@tuneBFC

6 жыл бұрын

It’s probably the clutch basket.

@tpghl5225

6 жыл бұрын

tuneBFC that's what the problem for my 125 was, clutch basket was notched so I got all new plates, needle bearing and basket and noise is gone 👍

@dirtsquadatv2714

6 жыл бұрын

Quintin Humphreys clutch basket is groved out.

Nice looking bike

Having e same issue with my Trx 250r it sounds like a rod knock at idle but when I rev it up it doesn’t raise the knocking sound

So that’s what that noise was…

Sounds like rod knock. Just changed all bearings and a piston in my mito 125... or it might be gears in my engine. Its winter here so i have no chance to take it out but i dont think driving will make it better.

@joski9030

2 жыл бұрын

Mito nice love the Ducati look on those and they go like stink we had a yellow and red at the shop one did 110mph they are crazy revving engines also a rotax 4 stroke drops on them quite easily great little track bike with that in it !

Super cool bike, hope you fixed it

Conflicted.... Happy about bad news 🤔 interesting

@BrendanDunne94

2 жыл бұрын

I've had worse news, 1st World problems at its finest.. Its all about perspective 🤙

Can also be a bad water pump bearing I've heard it sound like that when your water pump is about to go

@dedee4089

2 жыл бұрын

nope

my man got da 3 stroke

Helllloooooo from the other siiiiddddeeeeee, I must’ve knocked a thousand timmeeeessss.

my bike sounds like that and been giving it hell for 30+ hours lol.

@kdcustoms1272

3 жыл бұрын

i did break a throttle cable though.... check that for sure! well replace!

Das sollte man unbedingt so laufen lassen

Ratteling is rod bearings.

It sounds as if the kickstart pinion after starting is still meshing

That sounds f#cked 😂 sounds like big end to me

The noise obviously spells trouble turn it off and fix it. Prevention is key in race engines. Kill button motor out.

@BrendanDunne94

2 жыл бұрын

That's exactly what I done.

If you ask me, I think the valves need adjusting

@BrendanDunne94

2 жыл бұрын

Probably right, but then again it could be the bearings in the turbo

So what happend you change the crank bearings? And that's what it was for sure. The noise stopped?

stethoscope? also for all the comments too.

WY to much noise. Shut it down. Rebuild

What sound is telling you you need a bottom end? Is it that "whirring" noise that matches engine rpm? I ask because a sound like that started developing while I was riding today, and I'm trying to diagnose it. I have an 06 YZ250. Thanks!

@BrendanDunne94

7 жыл бұрын

Michael Gonzalez no the whirring noise I think is common on the yz's.. it's the knocking you can here on the over run when I let off the throttle

@krotchlickmeugh627

2 жыл бұрын

Diagnosis isnt guessing bub

@yamahajog04

2 жыл бұрын

@@krotchlickmeugh627 lol bet you down own a bike

@krotchlickmeugh627

2 жыл бұрын

@@yamahajog04 your right. I own several. But more importantly i own a powersports repair shop.

@williamgrayson3979

2 жыл бұрын

@@krotchlickmeugh627 got em reap quite

U look like elon musk in this video 😂

hey man I have that same issue and sound with my yz250

The problem sound : slack / loose the piston 🔦

Low compression too because it shouldnt have cranked over that easy

@BrendanDunne94

2 жыл бұрын

I'm just a beast 💪🏻

@adrian_de_la_torre7114

2 жыл бұрын

@@BrendanDunne94 maybe but idk man, lol

What was actually the problem as my bike is sounding the sam ktm 250 exc

What decals set are those? They look sick bro

@billybull7419

3 жыл бұрын

F

Big end surely.

ARRRRRRRRRRRRRRGH my bABY!!!!!!!!! ARrrghhhhhhhhh rip

Are you sure the kickstart pinion is not meshing after the start ?

Are you sure it’s not the clutch basket? Mine was notched badly and sounded like this, my 00 rm 250 currently needs a basket to and sounds like this, when I disengage the clutch it goes away though, but as soon as my hand back off the lever it’s back

@BrendanDunne94

2 жыл бұрын

Yeah 100% this was 5 years ago, it got fully rebuilt and lasted well. Over 100hrs.. Apart from 3rd and 4th going about 50hrs later 😤

@TheHonda300ryder

2 жыл бұрын

@@BrendanDunne94 haha to be honest I thought this was a recent vid, but just recent comments on it. My old 03 ran strong, 4 years of abuse on it, still blew 165 psi, ended up bending a shifter fork. All I had was 5th and a false neutral for 4th, wouldn’t shift down anymore. Wish I fixed that bike and never sold it

@BrendanDunne94

2 жыл бұрын

@@TheHonda300ryder it's always regret selling bikes sooner or later, it's like a curse 🤣

@TheHonda300ryder

2 жыл бұрын

@@BrendanDunne94 hahaha

If I have bad crank bearings will my bike still idle?

What a sound🤤

Got the same noise on my Kawasaki KX 125, can’t find out what it is...

my blaster sounded like this and i sold it to some guy i should probaly tell him lol

Sounds like a honda

Uh so I ended up changed both crank seals on my yz80 and the bearings looked fine and the crank had no play and it is making this noise I always thought it was my water pump

bad bottom? let me start it up and run it so maybe the crank seizes and breaks a case.. jezz if you hear it like that whyyy keep at it? and those saying it sounds normal god be with you. i think its the only vid on youtube that you can hear a bad bearing in !

@BrendanDunne94

2 жыл бұрын

Run it so I can send the video to a mechanic friend of mine for a second opinion? You'd swear I just took it to weston beach race by the way you're going on 🤣 look at the bike., Does it look uncared for? No is the answer 👌

@motoboq9606

2 жыл бұрын

@@BrendanDunne94 thats what i was thinking the bike looks pristineeeee and hot af!!!!! im also a bike mechanic and normally when clients send me videos you can never hear a bad bearing but in this case yeah well normally they send me a video of it running and then it arrives as a non runner. it still sounding pretty nice honestly but i dont like to run them when a bearing has failed even more on 2 strokes as sometimes the bearing flakes and scorches the whole cylinder :/ but yeah you are right got to do what you got to do cant just be driving to mechanics when you can record. also may i ask what you used to record this ? sound quality is GREAT!!!! hope you get er fixed soon should be an easyish fix :D

@BrendanDunne94

2 жыл бұрын

@@motoboq9606 exactly, I had planned on rebuilding it soon anyways so I wasn't to bothered and I just used my phone at the time dude, I think it was a Samsung s6 or something can't remember, nothing fancy though 🤙

@motoboq9606

2 жыл бұрын

@@BrendanDunne94 oh damn nice i used to have the s8+ great phone for filming. bike looks hella trick man hope you get it sorted soon :D just fisnihed doing a wr250 ttoday not nearly as clean as yours but man 2 strokes are awesomeee, can still smell that nice oil

@BrendanDunne94

2 жыл бұрын

@@motoboq9606 dude this video is 5 years old.. About a year after I rebuilt it I turned it into a fully fledged enduro bike.. It was sick, I don't have it anymore but I want to get another one soon! And awesome on the WR! Hope it rips 🤙🤙

I changed my crank berings but it still makes the same noise

Thats piston rings.....stupid rumors again

Damn that sounds just like a shit canned top end. Then again since the mic is picking up noise from everywhere it really could be about anytging listening from this end... ill have to take your word its in the bottom

yep, thats why i dont like two strokes, not reliable

Is this a common issue? Is it caused by neglect, or thrashing the bike like a a-hole? I've never owned a 2stroke, only 4strokes. So, idk if this is just a problem that 2strokes have.

@BrendanDunne94

2 жыл бұрын

Motocross bikes are high performance bikes and need regular maintenance (like after every ride) if you run good 2 stroke, are mechanically sympathetic and have so regular maintenance then they can be reliable but don't expect it to last years.. 2 or 4 stroke it doesn't matter.

You did new crank bearings and that fixed it? My bike is making that exact same rattle

@BrendanDunne94

6 жыл бұрын

Tyler Veldman yeah if you look at my other video which was a few weeks later it's all done

Actually it’s the muffler bearing that’s bad. 🤔

@BrendanDunne94

3 жыл бұрын

Don't be silly, this was a brand new muffler. Bearings where goooood!

Sounds pretty normal, how did the bearing look was it bad? Im looking for the video where you rebuilt it but cant find it did you take it to.a shop?

@BrendanDunne94

4 жыл бұрын

Yeah the bearings had a lot of play in them, so it was due to be rebuilt. A friend of mine rebuilt it and I've no video unfortunately.

Blew my buddies 85 bc of this prob. You don't know the bearings bad until you blow it really smh

I have exact the same noise on idle and when I pull the clutch lever the noise disappears.

@BrendanDunne94

2 жыл бұрын

That's your clutch basket then my man

My bike sounds exakly the same but there is no nock when idling but when you rev it it sounds exactly the same what sounds is from the bearing ?

@ryanmason7703

4 ай бұрын

What was it? I just got the same problem and stripped the motor and everything is good but the crank bearings are a little noisy

Are you sure it isnt the piston skirt?

I’m having the same problem but don’t have a clue what it is

sorry but you told me nothing but how to smell the tailpipe .

My bike in a nutshell

@BrendanDunne94

2 жыл бұрын

Fear not, new parts are available 💪🏻

Was it crank bearings

why would you keep running it??? your asking for it to blow up and cost you more money

how are you so clean?

@BrendanDunne94

2 жыл бұрын

Lynx shower gel

hot dirt bike

LOL so what was the problem

👌👌👌🔥🔥🔥🏍🏍🏍

My rotax 122 made the same sound..

Is it he derrrr noise

how much did more did it vibrate with the bad bearings compared to new ones?

Why would you even start it if you knew the bearings were fucked?

@BrendanDunne94

2 жыл бұрын

I'm not master yoda, I can't just sense bad bearings.. I sent the video onto my mechanic friend for second opinion, have a problem with that?

I think the off riad bike is good bike

It's more of a growl

Did you get a new crank kit or just do crank bearings?

@BrendanDunne94

2 жыл бұрын

Rebuilt everything... Crank, bearings, piston, clutch basket etc..

@almorgan2744

2 жыл бұрын

@@BrendanDunne94 So you dont really know what fixed it right? Coulda been piston slap.. just sayin

cool bike start.