My blaster is making a knocking noise I can only hear it while it's idling any idea what it could be? Thanks
My blaster is making a knocking noise
- Thread starter Don scrotolino
- Start date
Did it just suddenly happen?
Could be the engine running, Blasters are notoriously noisy.
May pay to pull the reeds out and check for signs of a cracked piston skirt.
Could be the engine running, Blasters are notoriously noisy.
May pay to pull the reeds out and check for signs of a cracked piston skirt.
I agree with blaaster, could be about to do like mine did and shatter the piston skirt. It's probably best to go ahead and do a top end rebuild to see exactly what's going on. Better to spend 250 now than 800 later. I learned my lesson the hard way.
Could be one on many things, but most likely piston slap.
I thougt mine had piston slap after my first outing with the new bike, had a leaky crank seal and decided to replace all the gaskets and seals.
While apart, I checked the clearances, which seemed to all be in spec. I did however notice that the top piston ring was not held properly by the locating pin... A timebomb! So I replace the piston too.
Funny thing is, I discovered where the knocking sound came from. It was the ballance shaft weight knocking in the casing. The bearings were worn badly and causing the interference. (Spi n8ng the ballance shaft gear by hand would cause the knocking sound)
I thougt mine had piston slap after my first outing with the new bike, had a leaky crank seal and decided to replace all the gaskets and seals.
While apart, I checked the clearances, which seemed to all be in spec. I did however notice that the top piston ring was not held properly by the locating pin... A timebomb! So I replace the piston too.
Funny thing is, I discovered where the knocking sound came from. It was the ballance shaft weight knocking in the casing. The bearings were worn badly and causing the interference. (Spi n8ng the ballance shaft gear by hand would cause the knocking sound)
