Hard start rough idle and misfire

1990 CHEVROLET 1500
190 MILES • 5.4L • V8 • 2WD • AUTOMATIC
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WIZZZO
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  • 1 POST
Not sure what’s up. buddy put plugs,wires,cap and rotor on it and a starter, but when he did the starter he broke the knock sensor so I replaced it and still service light on and hard start etc.
Jan 28, 2020 at 1:57 AM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good afternoon,

Can you tell me the code?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Can you hear the fuel pump run when you turn on the key?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Did you check for spark to the plugs?

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Roy
Jan 28, 2020 at 12:59 PM