TheManOfStihl
Half man, half bear, half pig.
My dad's 029 was getting low on compression due to a scuffed piston on the exhaust side. So it got hot I told him, no big deal. We will put a new cylinder and piston in and be back in business. We decided to go with a no name kit from Huztl, being on a budget, which arrived the other day. He bought this saw new around 1993 and we've never had major issues, so it's still the OEM piston and cylinder in it.
I pulled the saw apart, cleaned everything and installed the cylinder and piston. It rolled around by hand well, all seemed to be good. Assemble the entire saw, install spark plug, and give it a few test pulls. Yeah, it's got way better compression now, but it clangs when it spins over. Pulling it slow, you can feel a definite resistance at the top of the stroke.
This is a clamshell engine, there is no gasket for the pan, just sealant. What would cause this? I reused the crankshaft, no play in the bearings, new seals, and sealant on the pan. There should be no variation for squish in this setup, right? It sounds like the piston is hitting the top of the cylinder, but I can't see in there well enough to see what's going on.
Removing the spark plug does not solve the issue, and the spark plug is not damaged. It still clangs when rolling over with the plug removed. Has anyone had a similar experience? I'm not sure what to do, but don't really want to tear the whole thing back down. I know that I have to, though...
Thanks for any input you may have.
(PS - I know, I went aftermarket, I get what I paid for. But I've used a handful of P&C's from Huztl with no issues other than this one. This is my first P&C issue.)
I pulled the saw apart, cleaned everything and installed the cylinder and piston. It rolled around by hand well, all seemed to be good. Assemble the entire saw, install spark plug, and give it a few test pulls. Yeah, it's got way better compression now, but it clangs when it spins over. Pulling it slow, you can feel a definite resistance at the top of the stroke.
This is a clamshell engine, there is no gasket for the pan, just sealant. What would cause this? I reused the crankshaft, no play in the bearings, new seals, and sealant on the pan. There should be no variation for squish in this setup, right? It sounds like the piston is hitting the top of the cylinder, but I can't see in there well enough to see what's going on.
Removing the spark plug does not solve the issue, and the spark plug is not damaged. It still clangs when rolling over with the plug removed. Has anyone had a similar experience? I'm not sure what to do, but don't really want to tear the whole thing back down. I know that I have to, though...
Thanks for any input you may have.
(PS - I know, I went aftermarket, I get what I paid for. But I've used a handful of P&C's from Huztl with no issues other than this one. This is my first P&C issue.)