Quote:
Originally Posted by JasonG
Don't know honda engines well but was thinking clutch bearing and detonation.
Someotherdave has it right.
If noise#1 is detonation, be careful, it can destroy am engine quickly.
Don't ask how I know that.....
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Thanks, I'll see if pulling timing makes it go away. I recently set the timing with a light but I really don't know for certain if the pulley on the crank (where the timing marks are) is the one that was supposed to come with this engine, so it's very possible that I'm advanced.
Quote:
Originally Posted by some_other_dave
Noise #1 sounds a little like detonation ("pinging"). Which in my non-Honda, sounded kind of like a "spitting rattle" noise, not a metallic "ping". If your engine is on the edge of detonation, moderate loads and medium RPMs and warm temperatures would be the most common times for it to happen.
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I suppose I didn't suspect detonation as my understanding was that it would most likely occur when cylinder pressure was highest and burn was leanest - ie WoT before the computer begins enrichment. I suppose I need to read up on detonation.