Timing chain - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 2 (permalink) Old Aug 2nd, 03, 09:16 PM Thread Starter
Join Date: May 2003
Location: chicago
Posts: 9

There is a rattle coming from the front of my engine that sounds like pinging. I know its not engine knock. It does it at idle if I accelerate
it goes away. Im almost possitive that it is due to excessive play in the timing chain. Any ideas
?? I checked it with a piece of hose and the sound is coming from the timing chain cover. An
oil pressure check was done and I got 22psi @
idle 600 rpm's in drive. Timing is 6 dg BTDC.
87 camaro tpi.
ilrocu2 is offline  
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post #2 of 2 (permalink) Old Aug 3rd, 03, 02:44 PM
Join Date: Dec 2001
Posts: 76

Hello, I've run into that problem many times also. You can check slop in the chain by taking off the dist cap and mark where the rotor is pointing, then rotate the engine by hand one way (clockwise or counter-clockwise) doesn't matter. Watch how many degrees the marks on the balancer move in relationship to the timing mark. Now move the balancer the other direction, as soon as the rotor moves see how many degrees the balancer moved in the other direction. Now, subtract the difference. If it is more than 6 or 8 degrees, the chain is bad. I've had them so loose that they wore a hole in the timing cover causing a leak!
Hope this helps, Jeff
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