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your lifters may be lose and need tightening

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โˆ™ 2007-02-27 15:26:15
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Q: Why would an engine sound fine at start up then get louder and when you drive it you feel a pop underneath the pedal?
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To change the sound, For instance an overdrive pedal boosts the sound making it louder and clearer, where as a distortion pedal makes it louder but less clear.


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On most piano it affects the volume of the piano. When the pedal is down the piano is quieter and when up the piano is louder.


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Usually it sounds like a clunk. Put the car in drive, step on the brake pedal and hold it down while you slowly accelerate on the gas pedal. If the engine lifts to one side, your mount is broken.


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What does a neutral switch do in cars?

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Why doe brake pedal get hard when turn off engine?

On modern vehicles the brake system is enhanced by a vacuum operated "booster". This makes the brake pedal softer and more responsive. When the engine is turned off the engine no longer produces vacuum to supply the booster so the pedal gets hard.


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Key on, engine off. Press the gas pedal to the floor three times.Key on, engine off. Press the gas pedal to the floor three times.


Why a 1997 Toyota corolla brake pedal is soft when the engine is running and when the engine is off pedal is firm what could cause this?

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There is no noise when accelerated but there is a knocking sound when the gas pedal is released the lower the gear the louder it is What is wrong with your car?

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When pushing on gas pedal you hear knocking sound in engine?

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easiest way to test vacuum pump is , with engine off, pump brake pedal until pedal goes hard keep pressure on brake pedal and start engine if vacuum pump is good, you will feel the brake pedal go softer so you don't have to use as much effort for pedal to be depressed