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1997 Chevy Truck misfire on cylinders 3 & 7

Tiny
PAMELALEIGH1961
  • MEMBER
  • 1997 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 182,000 MILES
I have 97 chevy k1500 with a 350 engine that has a misfire on cylinders 3 and 7. Compression on these cylinders are 120, fuel pressure is 56psi, I have replaced distributor cap, injectors, plugs, wires, and have checked the injector pulse, and also swapped out the computer. The misfire is still there, is there anything I have missed?
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Wednesday, January 30th, 2008 AT 11:35 AM

4 Replies

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Distributor rotor.
Timing checked as well?
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Wednesday, January 30th, 2008 AT 11:48 AM
Tiny
PAMELALEIGH1961
  • MEMBER
  • 3 POSTS
Will replace the rotor. Timing is fine. Will let you know if rotor fixes the problem. Thanks for your reply!
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Wednesday, January 30th, 2008 AT 12:29 PM
Tiny
PAMELALEIGH1961
  • MEMBER
  • 3 POSTS
Nope, rotor is not the problem
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Wednesday, January 30th, 2008 AT 1:16 PM
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
When you swapped out the pcm, did you also transfer the vcm and the prom?

IT also would need to be reprogrammed.
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Wednesday, January 30th, 2008 AT 2:24 PM

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