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Hard start rough idle and misfire

Tiny
WIZZZO
  • MEMBER
  • 1990 CHEVROLET 1500
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 190 MILES
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.
Tuesday, January 28th, 2020 AT 1:57 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
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Tuesday, January 28th, 2020 AT 12:59 PM

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