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How do you fix a backfire problem on a 350 engine coming from the exhaust?
Wiki User
∙ 13y ago
Check and see if the distributor cap is cracked.
Could be as simple as a vacuum leak.
Check the spark plugs to see if one looks different from the rest. If so, it could be a bad rocker or flat lobe on the cam. Pull the valve covers and have a look around
Wiki User
∙ 13y ago
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What causes an engine to backfire through intake coming off idle?
Out of time.
How can you tell a Harley has an exhaust leak?
The engine may backfire excessively. You may also smell a strong exhaust odor in the riding position. In worst cases, it can cause the engine to run lean.
Why does your car backfire while driving it?
Backfire is an explosion produced by a running internal combustion engine that occurs in the intake or exhaust system rather than inside the combustion chamber,
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Your engine is shot. Rings or valves, probably both, are shot.
What causes a 1973 Pontiac 350 engine to backfire through the exhaust?
A large backfire is most likely caused by a bad spark plug or plug wire. Unburned air and fuel pumped into the exhaust will often be ignited by the other cylinders still burning exhaust gases. Also check your ignition timing, if it is late and you have a rich mixture you can get a backfire. An exhaust leak will let air enter the exhaust under deceleration and cause a "popping" sound.
Why is your 92 F150 5.0 backfiring through carburetor?
A backfire is caused by many different things. Using the wrong grade fuel will cause a backfire, as the engine's compression ratio is usually too high and will detonate the Air/Fuel mixture, causing a backfire. It can also be caused by advanced or retarded timing. Advanced timing will cause a backfire through the intake, as the spark occurs too early and ignites the Air/Fuel mixture before the intake valve is closed. Retarded timing causes a backfire through the exhaust as the spark occurs after the exhaust valve has opened. Your problem seems to be advanced timing. A backfire is caused by many different things. Using the wrong grade fuel will cause a backfire, as the engine's compression ratio is usually too high and will detonate the Air/Fuel mixture, causing a backfire. It can also be caused by advanced or retarded timing. Advanced timing will cause a backfire through the intake, as the spark occurs too early and ignites the Air/Fuel mixture before the intake valve is closed. Retarded timing causes a backfire through the exhaust as the spark occurs after the exhaust valve has opened. Your problem seems to be advanced timing.
Why does engine backfire when slowing down?
Backfiring on deceleration is normally caused by excess fuel being ignited in the exhaust system.
Why does your exhaust backfire?
Spark plug wires are installed incorrectly, or the enigne is out of time. Too much fule that is not being combusted in the engine. Fuel gets into the hot exhaust, then ignites.
Why is your 1996 Cadillac sedan deville making a backfire noise from the engine compartment while at a steady speed?
If a 1996 Cadillac Sedan DeVille is making a backfire noise from the engine compartment while at a steady speed, it is probably due to a bad oxygen sensor. The vehicle could also have one cylinder that is not firing or a problem with missing exhaust or the catalytic converter.
Daewoo nubira shuddering when idle and smoke coming from exhaust?
sounds like you have head gasket problem if the exhaust smoke is white in colour then its engine coolant if its blue smoke then its burning oil you will need to get the engine pressure tested at a garage.
If your pleasure craft engine back fires will that prevent the ignition of gasoline fumes?
No, a backfire is the ignition of unburnt fumes in the exhaust system.
What causes a 1993 5.0 mustang gt with the 302 engine backfire between 50 to 70mph?
Unburned fuel is igniting in the exhaust, you may have a fuel metering problem, or a timing problem. If the timing chain is stretched it could throw off the spark timing at high rpm.
