Question about 2006 Buick LaCrosse

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Engine whine knock on cold start ups that last 4-5 minutes

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It sounds like you have a lifter problem, Or you have low oil. it does it when you first start it up because it takes time for the oil to get into all the valves. try changing your oil and and adjusting you lifters that should fix your problem but don't hold me to it.

Posted on Feb 03, 2010

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I hope that you have found this information to be useful, and if I can be of any further assistance, please let me know. Thank you for using fixya!

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I bought my wife a Lex and she also experienced the SAME problem. It is TRUE that that's one of the engine's characteristc's,but it can be corrected. These are the step's that i took.

(1) First step is to change the oil and filter if you HAVE NOT done so lately. (Get a GOOD filter(Fram or Puralator) and oil ( I use ONLY Castrol).

(2) Get a 12oz bottle of Sea Foam(insist on ONLY Sea Foam,because auto part's store's will try to sell you what's on sale. I KNOW that Sea Foam work's). Pour HALF of the bottle in your oil and the other half in the gas tank(Make sure that you have atleast a half of a tank of gas BEFORE you pour in the Sea Foam). The Sea foam will clean your engine internally to promote better oil flow,especially at cold start up when ou need it the most. When added to gas it act's as an upper engine cleaner to get rid of carbon build up in your Intake and EGR Valve which can cause the symtom's that you describe.

(3) Protect your internal engine part's during cold start wam up's by pouring in a bottle of Slick 50 AFTER you do the recommended oil change.

(4) Lastly, use NOTHING but 93 octane gas in you vehicle.

If you do ALL of these step's, you should notice the difference.

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