Check Engine Light 01 Civic

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Jul 22, 2012

Uareabozo

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Check Engine Light 01 Civic

Had a engine light come on today. Auto Zone ran test. Said it was Cylinder 1 misfire. I changed the plugs but light did not go off. What should be my next step?

Jul 22, 2012

scooty

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Re: Check Engine Light 01 Civic

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Originally Posted by Uareabozo

Had a engine light come on today. Auto Zone ran test. Said it was Cylinder 1 misfire. I changed the plugs but light did not go off. What should be my next step?

I think you need to have that code cleared for the light to go off.

Which plugs did you use and did you gap them properly? What did the coil for 1 look like? Any cracks or signs of arcing?

Jul 22, 2012

ezone

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Re: Check Engine Light 01 Civic

If the misfire is still present, then you didn't fix it.

If the misfire is gone now that you changed the plugs, then go back to the Zone and have them clear the codes. It can take a while for the light to go out by itself.

Get the freeze frame data before they clear the codes.

See if the code comes back.

Compression test.
Swap coils around, see if the miss moves.
Valve adjustment
Valve job
Who knows?
Diagnosis.