P0304 Chevrolet - Cobalt 2006

Question

My engine randomly hesitates at idle from the regular 750 rpm to 500 rpm.
And two times the engine stalled.
Using an OBDII bluetooth with the Torque Pro installed on my Android cell I found an error P0304 misfire.

Answer 1

HI there,

This could be a simple issue with a spark plug or wire. I would start by replacing all 4 plugs and wire as well as possibly replacing the ignition coil as well.