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Why Can't the RPM Go Up?

1Answers
Genevieve
07/28/2025, 07:15:17 PM

Here are the reasons why the RPM can't go up: 1. Clogged fuel filter: During inspection, the mechanic found that the fuel filter housing was quite worn, indicating it had not been replaced for a long time. If the fuel filter is not replaced for an extended period, the internal filter material gradually becomes clogged with impurities in the fuel, leading to insufficient fuel flow. At idle or low RPM, the fuel supply may still support engine operation, but during rapid acceleration, the engine may not receive enough fuel, resulting in insufficient power and difficulty in increasing RPM. 2. Dirty air filter: Air intake also affects engine power. If the engine's air intake is insufficient, both fuel injection volume and combustion efficiency will decrease, failing to provide adequate power. When the air filter is not replaced for a long time, the filter material becomes partially clogged, reducing the engine's air intake. This may cause the engine to operate normally at idle or low RPM but experience power limitations during rapid acceleration due to insufficient air intake.

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