Peace Sports 150 engine noise By turtle8 (Read 2,061 times)

[turtle8]

This 150cc scoot has a loud, rattly, mechanical sound at high rpm (highway speed ~ 45mph). We thought it was valve train noise. I checked and adjusted the valves; the exhaust was tight. That didn't eliminate the noise. Could it be an exhaust gasket leak?

The scooter has 3,049 miles.

[sprocket]

Could be anything...crank bearings, loose stator screws (common)

You need to take the cover off the CVT and see if it is in there...

[turtle8]

I am thinking crank bearings now. I haven't pulled the CVT cover off yet, but I'd imagine a loose screw sound to be less rhythmic. This sound reminds me of my Dodge Neon when I had bad rod bearings.

[sprocket]

Bummer...

You might be able to 'feel' if it is a crank bearing. Sometime if you pull the plug and turn the engine by holding the fan you can get a slight vibration. When they go really bad there is play in the crankshaft.

Do you think it could be the clutch slipping at high RPM...?

Might also be a loose baffle in the muffler... I have spent days trying to find those suckers!

[Kaveman]

My varitator assembly made one h#$% of a racket when the rollers needed replaced after 3800miles . Might check that aswell .
Bill C.

[turtle8]

Jun 20, 2011 13:50:36 GMT -6 sprocket said:

Bummer...

You might be able to 'feel' if it is a crank bearing. Sometime if you pull the plug and turn the engine by holding the fan you can get a slight vibration. When they go really bad there is play in the crankshaft.

Do you think it could be the clutch slipping at high RPM...?

Might also be a loose baffle in the muffler... I have spent days trying to find those suckers!

The noise is definitely coming from the area of the engine. Otherwise it runs smooth; just when you hit about 45mph, it really makes a racket. This scooter doesn't have a tach.

[Jon C]

Try searching my posts. I had that problem once. I have a youtube video of it. Got mine fixed with some labor and lok-tight.

Jon's Noise Thread

[turtle8]

OK, I saw your "loud clacking" thread. If and when my friend with the scooter decides to let me do it, I'll start a tear-down to investigate. He is thinking about doing a BBK too. He did tell me that he really pushes his scooters to the max often.

[turtle8]

I know the noise was rpm dependent and rose and fell in direct correlation to the throttle position. I can't investigate further because he took the scooter home. Next time I see him, I'll ask him to bring it back.

He parked his Peace for now and is riding his new Gator (Bali) 150 that he bought a few weeks ago. He bought the new scooter before he came to me with his sick Peace and is now looking at a 250.

[beerstop]

Hmm a friend with too much money maybe you should just take his basket case off his hands on the cheap.

[turtle8]

Jun 28, 2011 11:49:38 GMT -6 beerstop said:

Hmm a friend with too much money maybe you should just take his basket case off his hands on the cheap.

My neighbor low-balled him. The guy with the scooter felt insulted and said, he'd just have it fixed.