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I seem to still have multiple misfires?

Tiny
SILAS SOUTH
  • MEMBER
  • 1997 GMC C1500
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 166,000 MILES
I have replaced the spider injectors, distributor cap, wires, sparkplugs, fuel pump, fuel filter, o2 sensors plus much more and I seem to still have multiple misfires. I adjust timing and doesn't seem to help.
Wednesday, April 26th, 2023 AT 8:03 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,640 POSTS
I have seen the MAF sensor go bad and cause this issue, here are guides and the location of the MAF sensor so you can change it out. Also service the throttle body as well.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

and

https://www.2carpros.com/articles/throttle-actuator-service

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Thursday, April 27th, 2023 AT 2:33 PM

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