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Filters may be clogged in the injectors. They make a kit to replace all the seals and filters in the throttle body. I've done it, just pay very close attention to how everything fits together. Could also be PCV valve
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What causes high idle on 1990 z 71 4x4 silverado 350 eng?
on tbi systems, usually a vaccuum leak. check gaskets on the carb, and hoses that are carb related
Where should the vacuum advance be connected to on a 350 Chevy with a 2 barrel carb?
Look on the carb for a small vacuum source above the throttle body. You would want one that has no vacuum at idle.
Where is the idle on a Chevy 350?
carborator
How do you adjust idle for 1990 Chevy 1500 350 V8?
It could be the Idle Air Control (Idle speed control) valve. Its located on the left side of your TBI and has an electrical connection.
Why does my Chevy 350 smoke black then smooths out?
Black smoke is excessive fuel, or "rich." It is probably flooding out at idle. Either the floats in the carb, or the needle, and seat.
What alternator will charge at idle on a 350 Chevy?
Any alternator will charge at idle.
Can you put a one barrel carb on a 350 Chevy engine?
NO.
Will a 1995 Chevy 350 lt1 work in a 1990 Chevy pick up?
will a 1995 Chevy 350 lt1 motor work in a 1990 Chevy pick up
What was the stock carb on a 1979 350 Chevy truck?
Rochester Quadrajet.
Idle RPM for 350 Chevy engine?
800 rpms.
How do you stop 350 engine with fuel injections from idling to high?
set the idle down on the carb
1990 Chevy 1500 pickup 5.7 liter V8 it starts fine but it wont idle if you give it gas its fine but if you let it idle it goes from a low idle to a high idle a couple times then dies is it the ecmchip?
I just bought a 79 Chevy with the 5.7 350 in it..it was doing the same thing next time you put gas in it get some sort of additive like carb cleaner and put it in the gas then try and blow it out a little I drove mine about 100 miles when I bought it and it seems to be just fine now
