noise

My honda clone is making a quite loud whining/squeling noise whenever I put any load on it, but disappears at certain points during throttle input. The engine is used to power a homebuilt mini-bike with 22"x10" ATV wheels, the power is transferred through a 2:1 reduction wet clutch -> 11 ->...

Two part question: Can the brass bushing on the jackshaft clutch be replaced, or should I just be looking for a new clutch? I ask because after putting this project back together, the clutch bell makes the same noise when freewheeling that it did when I was a kid (it sounds like it spins to the...

I just re-drilled new holes on a new plate for my mini bike and when I put the clutch back on, it keeps engaging and making a terrible noise. However, this only happens when I put the chain on. There no problem when I take the chain off and just hold the clutch with my foot. It is a fairly new...

Have a predator 212 hemi mild build bsp3 cam intake and header it makes a weird ticking noise idling, I know it's not a knock when I opened it up the rod was tight like it should be motor is basically new it runs very healthy and it did make the noise when I first bought it. I'm thinking valve...

So after a year, my Rupp Roadster2 project is done. Just this past weekend I rode it for the first time...so whats up with the clunking sound coming from the driven pulley? Sounds like metal to metal..after I get going, it stops..It only does it when I first start moving. Am I supposed to put...

Hi all, need some help. When pulling the starting cord, getting a scraping metal noise coming from the the recoil assembly. Do the lips on the starter cup become worn and cause the little protruding tab on the recoil to not grab fully and cause this noise ? Thank you in advance.

https://youtu.be/s8jki2rdJMo Hi everyone, I had my plug out, finding tdc and I noticed a clunk clink noise when turned over by hand. It happens throughout all different stages of the piston stroke. The engine runs fine and no loss of power. The engine has been built by one of the members on...

Please let me know if you have experienced a noisy (although new) centrifugal clutch. We have a new clutch on a Predator 212 engine which we have on a Fox Campus bike. The minibike is geared low (same as original) and runs well, except that the clutch randomly makes a loud noise and tries to...

I have a non hemi that has developed some type of knock. Before the knock i had a hard time setting valve lash, but eventually got it. Went out and did a full pass to test it out and came back with a slight knock. took the head and pull start off and turned engine over slowly by hand and it...

I bought a gx160 head and installed it on my 212cc. Now it has a lot of rocker noise...ive lashed valves like 3 times already(just past tdc). Should I go up on octane gas am I nit doing something right?

so i just put the OldMiniBikes hi flow intake kit on and upgraded to a 36 jet at 140 emulsion tube now it will not idle and it doesnt rev as high, sounds like it has a rev limiter sort of noise. why is it doing this?

Hey guys, I drained all of the factory filled oil from the crankcase of this new hemi 212, filled with 10w30 and ran it for a few minutes to warm it up. Then my Hot Rod neighbor (who is jealous that my minibike spanks his minitrail) came over and wanted to try it out and as he went past...

My coleman ct200u is making a grinding noise and is pulling like im twisting the throttle.

Stock predator 212 with throttle adjuster screw backed all the way out. I top out at 36 mph but there is a ticking/knocking at very high rpm. Can someone tell me what this is? Also, this does mean I have disabled my governor?

I think I'm addicted to sleeping with "pink noise" (1⁄f noise).

Do Honda or B/S make less mechanical noise than the Predator. My new Predator is noisy. It runs perfectly and isn't knocking or anything, just sounds like a threshing machine.

I have just rebuilt the Sachs 47cc engine on my 1972 Arctic Cat Prowler and I need some expert ears to give me some feedback. I went through every square inch and replaced the crank, bearings, seals and installed new clutch disks for first and second gear. I was careful to check the...

Hi my 5.5hp Jiangdong is making a very loud banging noise, like a hammer is hitting the inside of the engine. I recently cleaned the carb and set the valve lash, changed the oil, replaced the spark plug and all was working well, then the "banning noise started a few days later. I believe it's...

I have a predator clone and have realized the exhaust sound is very quiet which I'm happy with, although it's pretty loud by the side cover/head, is there anyway I could quiet it? Mayb a better side cover? Billet? Help

Well i didnt think i would have to post again so quickly. Have problem when i run the bike a little and then come to stop its starts making a whining noise and starts to almost pull a little but not much then stalls :no:. I made a video of the noise its making here is a link . by the way this is...