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test the compression in all cylinder bores to rule out the valves or for novice home mech. take the cylinder head in to a machine shop to have a compression test done.

A bent valve will be noisy, each time it is hit by the cam it will bang, the cylinder will not burn fuel and you may even have burning oil.

You will most liklely have a MIL light and a code for emissions like O2 sensor and/or cylinder misfire because of the unburnt fuel making the cat hot, but it could also be an intake valve so you could have backfiring through the intake and rough running for sure.

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โˆ™ 2016-08-18 19:58:43
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โˆ™ 2016-08-19 15:42:41

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Q: How do you know if you have a warped valve?
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The valve cover on a typical engine is a non wearing part. If it were damaged it could be bent, warped or cracked and could be the source of an engine oil leak.

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Get a mechanic to do it. You obviously have no idea as to the complexity of the task. e.g valve stem seals, valve seats, warped head tolerances etc.

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That is the most typical thing to cause a warped head. A warped head is a severe diagnoses and not the first thing that would come to mind for a problem. Don't know what the issue is but if you have a problem that has lead to you think you have a warped head and you haven't had a extreme over heat of the motor I will bet you don't have warped head.

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