is this a sign of bad power valve? the engine also pops on the left bank. the rightt side i can get a some adj. but very little.or do you think dirty carb. reguards dick t.
check your compression too. I had a bad head gasket between 3 and 4 that gave me the same symptoms. My power valve was ok. that is if by pops, you mean crossfire or backfire.
sorry, my fault....was thinking idle mixture adjustment....fingers just didn't follow what my brain was thinking....lol....i'll let the experts diagnose....good luck....Mike
Merc,
Take the carb off the table....Swap your carb with a known good one.
Dirt or a marginal rebuild might be a cause of your situation but a crappy set of
plugs can also cause what you describe. Burned valve/s, etc blah, blah, blah .
Charlie ny