1986 Rattle After Cold Start?
Thread Starter
Le Mans Master
Joined: Mar 2000
Posts: 9,127
Likes: 2,326
From: Pottsville, PA. USA Home Of America's Oldest Brewery Yuengling
1986 Rattle After Cold Start?
What could this be I have heard this on some 84-88 Vettes. When you start the car it sounds like the fuel lines rattle on the right side. The car has this rattle somewhere under the door area. Once the car warms up it seems to go away.
I checked the fuel lines from the filter back along the floor and they seem tight. I removed the inner wheel well and followed the lines back and found one spot where I though it could be rattling. I cut a piece of rubber hose and put it between the two lines. I also found the line to be touching the side of the gas tank and moved it away.
I can't seem to find what is making this noise.
I checked the fuel lines from the filter back along the floor and they seem tight. I removed the inner wheel well and followed the lines back and found one spot where I though it could be rattling. I cut a piece of rubber hose and put it between the two lines. I also found the line to be touching the side of the gas tank and moved it away.
I can't seem to find what is making this noise.
Team Owner
Joined: Jan 2003
Posts: 20,275
Likes: 236
From: Summerland B.C. Canada
Iv'e heard my fuel lines rattle from time to time. The pulse from pump will cause this to happen. I believe there is pulse absorber of sorts in the fuel sytem that may be failing.
Maybe a fresh fuel filter will help
Maybe a fresh fuel filter will help
Melting Slicks
Joined: Jul 2003
Posts: 2,384
Likes: 124
From: Reno/Sparks Nevada
My 'ol '85 did and still does it. Only on cold days in the morning. It's a rattling sound under the car. Never found where it was coming from. Even had a new catalytic convertor. Guess it's common...
Art
Art
- 1986 Original Owner -
Joined: Apr 1999
Posts: 3,193
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From: North Yorkshire, England
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Originally Posted by PAINTER MAN
My 86 does the same thing when cold. I believe this was a issue and was addressed on GM service bullitens. I guess mine and yours was never fixed.
It's called Fuel Line Hammer.FUEL RETURN PIPE RATTLE/KNOCK TSB
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