Summary
Engine backfires are not exclusive to older trucks and can occur in any vehicle, signaling potential mechanical issues. They happen when combustion occurs in the exhaust instead of the combustion chamber. Modern engines equipped with variable valve timings and computer-controlled spark timing aim to prevent backfires, but they can still occur due to various reasons. These include a lean air-fuel mixture, caused by insufficient fuel mixing with air, potentially due to failing fuel pumps or clogged injectors. Conversely, a rich air-fuel mixture, typically caused by leaking fuel injectors or faulty engine sensors, can also lead to backfires. Additionally, bent or damaged valves, bad ignition timing, or malfunctioning intake and exhaust valves can contribute to engine backfires. It’s crucial not to ignore them as they may indicate fuel leaks, failing injectors, or more significant problems.
Motor Biscuit
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