I seem to still have multiple misfires?

1997 GMC C1500

166,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC

SILAS SOUTH

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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

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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

Check out the images (below). Please let us know what happens.

Images (Click to enlarge)

Apr 27, 2023 at 2:33 PM