LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

.....Weird Noise

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Old Oct 27, 2004 | 04:44 PM
  #1  
Decap92RS's Avatar
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Joined: Jul 2003
Posts: 95
From: Antioch, CA
.....Weird Noise

ok....usually on hot days, every once and awhile, i hear a moan come from the back of my car, like, slightly high pitched. I noticed it once at the staging lanes at the drag strip when it was about 100 out, and i noticed it today when driving around. It starts, then stops. Ive never had it happen when it was cool out. Any ideas? the only thing I can think of back there is the fuel pump...but how would that make that noise?
Old Oct 31, 2004 | 06:12 PM
  #2  
WHYTLIE's Avatar
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From: Lincoln, CA
Re: .....Weird Noise

Does this happen with the engine running or off? Could be pressure in the tank built up and then releasing through the vent tube and one way valve?
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