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2002 Cadillac Seville SLS Question: My 2002 cadillac sls has a valve knocking sound when the engine is cold.



Epat2002, Roanoke, VA, March 14, 2013, 08:43

What is causing this. It has 61,000 miles and quite s down when it warms up

2 Answers
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  • Answer #1

    Greg's Orange Auto (15229 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 14, 2013, 09:11

    poss dirty inside of engine. rec doing an oil cleaning service to start with. that is the cheapest thing to start with. have you had regular oil changes?

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  • Answer #2

    Miles Auto Services (884 Answers) , Richmond, VA - (804) 885-4176
    milesauto March 14, 2013, 11:30

    Any noise could mean lots of things not always serious but it should be checked as soon as possible.....even minor things can become serious if put off.

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