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1990 BMW 535i Question: Upper engine tap at idle goes away when i give it gas. Lifters?

 

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Eli22, Huntsville, AL, March 01, 2012, 00:15
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Sounds like ball bearings rolling around under valve cover. Idles rough coincides with tap. Give it gas it goes away. Lifters, valves? and can it be fixed with out removing cylinder head?

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