Loud engine noise at Idle?

Tiny
JUANEMMANUEL
  • MEMBER
  • 2001 BUICK REGAL
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
Recently changed the timing cover gasket and seal, and the water pump gasket. Torqued everything to spec. Now the car is making a weird sound. It sort of sounds like a diesel engine. And it seems a bit hesitant when accelerating. Here's a video of the sound. Also, I had not noticed that the oil pressure light came on. As a side note, I did remove the oil filter housing and replaced that gasket too. However, I put everything back together how it was, including a small spring and cap that goes inside the housing. Also, I did not disturb the oil pump gears when I changed the timing cover seal.
Saturday, March 16th, 2024 AT 8:54 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Thanks for the video, it helps. "Oil pressure light came on" seems to be the problem, the engine sounds like it has no oil pressure. What can happen is the gasket material can go down into the oil pan and clog the oil pump pick up. I would remove the oil pan to clean it out. Here is how to fix the problem. Also, I would not start the engine anymore or you are going to hurt it. Check out the images (below). Please upload pictures or videos in your response to the problem so we can see what's going on.
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Sunday, March 17th, 2024 AT 9:55 AM
Tiny
JUANEMMANUEL
  • MEMBER
  • 48 POSTS
*Solved*
So I removed the oil pan but nothing was really inside it, other than a little crud accumulated over the years.
The real problem turned out to be the oil pressure relief valve and spring that goes between the timing cover and the oil filter adapter housing. I put it in backwards. The spring should go towards the timing cover the pressure relief valve should go towards the oil filter housing. When you put it backwards, the small valve blocks the oil flow. Below is a picture of how it should go. Thanks again.
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Friday, March 22nd, 2024 AT 1:42 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help.
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Saturday, March 23rd, 2024 AT 8:32 AM

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