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There are several reasons, the plug wires are crossed, the timing is retarded, and the valves are not properly adjusted.
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∙ 16y ago
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Why does my 1979 350 Chevy engine backfire through the carburetor above 3000 rpm?
The valve timing is offAnswersounds like a possible worn camshaft lobe. a fairly common problem on late 70's Chevy small blocks
Why does my 350 Chevy tpi backfire under acceleration?
When an engine backfires aka (burps) back through the carburetor this usually indicates a lean fuel to air mixture or an intake leak( which is more noticable at low RPM). When the an engine afterfires, aka (farts) out the tailpipe it usually means too rich of a mixture or unburnt fuel is entering the exhaust system
350 tbi backfire through throttle body 1990 suburban?
Adjust your timing
What type of Fuel system is on 85 ford 350 van with 460 engine?
carburetor
What is the horsepower rating on 1973 olds 350 engine?
160 horsepower - 2 barrel carburetor 180 horsepower - 4 barrel carburetor
What year model on Chevy suburbans had a 350 engine with a carburetor?
In late 1987 chevy went to fuel injection on ALL there engines. From 1987 down will have a carburetor.
How do you attach the accelerator pedal assembly to the carburetor in a 1966 Chevy C10 pickup with a 350 engine?
with rivets
How do you do a basic engine service on a 350 Chevy marine engine?
Change the fluids and filters. Inspect the spark plugs and wires. Clean the carburetor.
What carburetor does a 1998 wolverine 350 have?
it has a 34mm mikuni carburetor.
Where is carburetor adjustment screws on 1988 Honda 350 foreman?
The 1988 Honda 350 carburetor adjustment screws are on the side of the carburetor. There also is an adjustment screw on the very top of the carburetor.
How do you adjust carburetor on a 350 warrior?
The biggest screw on the side of the carburator, with a spring through it is the Idle adjustment.
What causes a 350 Chevy to backfire?
It's lean.
