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What would cause a 1973 Chevy Nova to all of the sudden start to backfire through the exhaust when you let off the gas?
Wiki User
∙ 15y ago
its running too rich down tune youre carb
Wiki User
∙ 15y ago
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What causes a 350 Chevy to backfire?
It's lean.
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The valve timing is offAnswersounds like a possible worn camshaft lobe. a fairly common problem on late 70's Chevy small blocks
Why would a 350 Chevy exhaust backfire?
If there is a exhaust leak anywhere in the exhaust system it will make it back fire out the exhaust. Also raw fuel being in the exhaust pipes will make it back fire too. That is if it is back firing when you let off of the throttle. But if it is back firing when you give it gas that could be bad plug wires are spark plugs, Timing may be to slow. Cam lobe worn down, Not getting enough fuel. could be a # of things. Check these things first, and if you still have a problem, then ask your question again.
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
Chevy 3.4 do the long push rods go on intake or exhaust valves?
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