I have a 1987 Chevy C-10 with a Throttle body injected 350. I did a complete tune up but it still doesn't want to idle. It stalls and seems to idle real slow. I don't know if there is a way to adjust the idle speed on the TBI models. Also there is a rapping sound that only happens when fully warm and at idle speed. At highway speeds and when engine is cold there is no rapping. Any ideas? The sound seems to come from the right side of the engine. Could it be the air pump? You can also hear the rapping comming through the exhaust, again only when fully warm and at idle speed.
- posted
20 years ago