Funny noise on first start in morning

  #1  
Old 09-04-2007, 12:23 PM
Thread Starter
Join Date: Jul 2007
Posts: 1
Default Funny noise on first start in morning

Hi all! When I started my car yesterday, and agin today, for the first time in the morning, I got a thwack-thwack-thwack sound from the engine...first time I've ever heard it. It goes away in a few minutes, and was accompanied (at least yesterday - it was dark this morning) by a light gray (oil?) cloud from the exhaust. I recently had the 180k (90k) mile work done and they adjusted the valves. I have 197k miles on the car, and checked the oil level this morning, and it looks ok...what else should I check? thanks!!
 
  #2  
Old 09-11-2007, 03:41 PM
Join Date: Sep 2007
Posts: 12
Default RE: Funny noise on first start in morning

black/Grey smoke is rich fuel, white smoke is oil. If it is just a puff at startup, it could be valve guides if it is white smoke. Valve adjust at 90K? Sounds way too early for a valve adjustment. this is a solid lifter motor so there is not supposed to be a valve noise. How loud is it? might be a sticking injector as they are the loudest thing on that motor at idle which is a testament to the quality of that motor, hope it is not the P/S pump..check fluid in that.
 
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