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Misfire on cylinder 1?

Tiny
GPUNKINSUE
  • MEMBER
  • 1999 DODGE INTREPID
I recently had the sparks plugs and a damaged fuel injector changed, the computer display showed an error of a misfire on cylinder 1. Since the repair the light comes on and stays on. When I start the car after being cold it shacks and has a faint knocking sound. Then at times it stalls, but then starts right up. What could this be?
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Thursday, December 17th, 2009 AT 5:48 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

It sounds like you might have a cylinder misfire and possibly injector flooding the cylinder, that's why you hear that faint knocking sound.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough
https://www.2carpros.com/articles/how-a-knock-sensor-works

If your check engine light on then you should run a scan to see what are the codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
https://youtu.be/vMwTzURWXmk

You might still have a cylinder not firing properly.
Check the coils and see if they are working properly.
You can check to see it its getting power. If you got a bad coil then it will not provide power to the spark plug.

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

Please let me know of any questions.

Thank you.
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Monday, August 2nd, 2021 AT 9:33 AM

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