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As with all of these questions, the cause could be many things, but one common one is this: The clicking is being caused by a bad exhaust-manifold gasket, which allows exhaust to escape its normal route from exhaust manifold to pipe to muffler. And in escaping that route, the leak makes noise as often as the piston nearest the leak purges exhaust from the cylinder in which it is operating. Hence a clicking noise that increases in frequency with an increase in RPMs.

If it's not a valve issue or some other issue, this problem won't hurt the car; it'll just get worse and more noticeable as the exhaust continues to erode the gasket material.

Check for loose sparks plugs also, sometimes the smallest thing could be the problem, i had the same problem and that's what it turned out to be.

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โˆ™ 2014-07-16 14:45:16
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Q: What does a clicking or ticking sound mean when accelerating or releasing the gas pedal?
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