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Car pinging/knocks during acceleration..

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Old Apr 30, 2004 | 08:05 AM
  #1  
NOCANDO's Avatar
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From: Barrigada, Guam
Car pinging/knocks during acceleration..

Hi guys....

Just recently I changed my thermostat to 160 degrees. Found out my car didnt run well with it. I changed back to 180 degrees and the car runs great; however I recently noticed that it knocks during acceleration. I have my timing set at 6 degrees TDC and had been running it for a while now without problems until changing my thermostat from 160 and back to 180. Should I just run it for awhile to get the computer to learn the 180 again? or should I retard it back to 4 degrees? I never had a problem with 180 with 6 degrees TDC until I changed to 160.
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Old Apr 30, 2004 | 09:11 AM
  #2  
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From: Nashville TN
Car: 1989 Trans Am
Engine: 355 HSR
Transmission: Pro-Built 700r4 w/ 3400 converter
Axle/Gears: 10 bolt w/ 3.42 gears
I would take it back 2* and see if that helps any.

Is the car consuming oil any? Blowing smoke at startup b/c of valve seals or anything? If so the oil would cause knock at startup and acceleration...

Last edited by Chris89GTA; Apr 30, 2004 at 09:14 AM.
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Old Apr 30, 2004 | 10:27 AM
  #3  
NOCANDO's Avatar
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From: Barrigada, Guam
Thanks Chris....I ll try that. My engine has mileage on it and maybe is consuming oil. Hope to get a crate in the near future.
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