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Posted by 96232 (Member # 9375) on :
 
Is it possible for the distributor to malfunction, I have replaced the TFI unit, the coil, the plugs, and the spark plug wires. The car is an 89 GT. It runs like it has a dead cylinder. It intermittantly will run great and cut back to running like crap. I just replaced the coil with a MSD one because the plugs when tested outside the car would spark except for #5 which would intermittantly spark and all the plugs had a weak spark.

Any input would be appriciated,
Thanks
 
Posted by Secnd2nun64 (Member # 1431) on :
 
Try replacing the cap and rotor.
 
Posted by 96232 (Member # 9375) on :
 
Did that about 4K miles ago
 
Posted by Secnd2nun64 (Member # 1431) on :
 
Have you done a compression and leak down test on the cylinders?

Are you sure it's spark related? Any type of MSD box on there?

[ May 22, 2010, 04:14 AM: Message edited by: Secnd2nun64 ]
 
Posted by 96232 (Member # 9375) on :
 
compression test done about a month or two ago all cylinders around 180 psi, no MSD box....
 
Posted by fasthatch (Member # 7277) on :
 
quote:
Originally posted by 96232:
Is it possible for the to malfunction, I have replaced the TFI unit, the coil, the plugs, and the spark plug wires. The car is an 89 GT. It runs like it has a dead cylinder. It intermittantly will run great and cut back to running like crap. I just replaced the coil with a MSD one because the plugs when tested outside the car would spark except for #5 which would intermittantly spark and all the plugs had a weak spark.

Any input would be appriciated,
Thanks
YES THE PICK UP IN THE distributor CAN BE GOING BAD AN CAUSE A MISFIRE
 
Posted by 96232 (Member # 9375) on :
 
well, its running better wen the MAF is unplugged, so That migh be a problem....
 




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