I seem to still have multiple misfires?

1997 GMC C1500
166,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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SILAS SOUTH
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  • 1 POST
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.
Apr 26, 2023 at 8:03 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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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Apr 27, 2023 at 2:33 PM
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