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engine noises


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jon s
New User

Jan 16, 2010, 9:50 PM

Post #1 of 2 (951 views)
engine noises Sign In

1999 buick centry 3100 v6 low miles 60000 has noise in top of engine did compresion test 170# all around/ checked oil pressure w mechanical gauge 40 psi at idel changed oil and filter does not miss abit noise gets louder when its reaved up /took valve covers off and started up and oil is bearley coming out i need help tanks jon


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 17, 2010, 8:15 AM

Post #2 of 2 (936 views)
Re: engine noises Sign In

Some ideas to check and questions:

* What did the sludge situation look like? Did any rocker arms have free play?

* A maybe it's not the engine but an accessory. Take belt off for a quick test - if noise is gone it could be the belt or belt driven item.

* What's the history if known and why the low miles? That's ok but if it sat an extended time it may take some use and may clear up.

* My term: Car may have suffered from perhaps a person (older maybe) who wicked over revved engine while cold, a habit my own late Grandfather had but didn't suffer a problem by luck. I've heard of broken or worn cams which might still work but can make noise.

** The oil should have been witnessed if run without valve covers dripping down each rocker arm. Not sure on this engine which to me has a good reputation.

Can you describe the noise a bit - like all ticking both sides, a single ticking, dull muffled bell sound, knock, double knock - anything more for us to help you with?

T







 
 
 






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