Mechanics

HELLO I'VE GOT A WITH A CODE P0304 MISFIRE IN CYLINDER 4, HOW DO I GO ABOUT FINDING THE PROBLEM AND RECTIFYING IT?

2001 Nissan Altima • 152,000 miles

I've changed the intake gasket approximately 72K miles ago, don't know if that may help with this question.
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Jpeters1
May 24, 2012.



Does it missfire more with the ac on if the ac works?

Saturntech9
May 24, 2012.
Actually when the ac is on the vibration is less, but at idle and driving it is noticeable.

Tiny
Jpeters1
May 24, 2012.