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it doesnt seem to happen with modern cars, but mine does occasionally backfire, particularly after being switched off and restarted within a short time.

2006-06-30 02:36:03 · 4 answers · asked by beautiful sadness 2 in Cars & Transportation Maintenance & Repairs

4 answers

When you switch off the car, you can get fuel still being pulled into the cylinders, but not fired, since the electricity to the engine is switched off. The raw fuel can then find it's way into your exhaust system, which can be ignited when you restart the car. This can happen on cars with carburetors. This type of backfire does not hurt the engine, but can destroy your exhaust system. Try to let your car idle a minute before you shut it off to minimize the fuel charge into the cylinders.
Modern cars don't do this because most are now fuel injected and the injection of fuel is stopped when you turn off your key.

2006-06-30 02:45:30 · answer #1 · answered by Jeffrey S 6 · 5 0

A buildup of raw fuel that accumulates in the exhaust for various reasons. Once that fuel builds up it can ignite causing the backfire

2006-06-30 02:43:31 · answer #2 · answered by EmEsBee 3 · 0 0

Have your timing adjusted

2006-06-30 03:46:06 · answer #3 · answered by Ironball 7 · 0 0

ENGINE TIMING IS OUT/

2006-06-30 05:36:45 · answer #4 · answered by JUNIOR 1 · 0 0

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