Can be a bad plug or plug wire. Can also be a burnt valve on that cylinder, or a blown head gasket. Run a compression test on all cylinders. If cylinder #4 is way below the rest, suspect an internal problem as described above.
Cylinder #4 misfireCylinder #4 misfire
Cylinder #4 misfire. see related questions below.
P 0304 (M) CYLINDER #4 MISFIRE Misfire detected in cylinder #4
A misfire on cylinder #4. See related questions.
Cylinder 1 and cylinder 4 misfire.See related question for more info.Cylinder 1 and cylinder 4 misfire.See related question for more info.
P0304 is a cylinder #4 misfire. Check plug, wire, coil, etc.P0304 is a cylinder #4 misfire. Check plug, wire, coil, etc.
Stop by http://www.coloradofans.com there are different people that have had that problem. you can probably message them personally and see how they got to that problem. P0300= Random/ multiple cylinder misfire detected P0301= Misfire detected- cylinder #1 P0302= Misfire detected- cylinder #2 P0303= Misfire detected- cylinder #3 P0304= Misfire detected- cylinder #4 p0305= Misfire detected- cylinder #5 P.S. These are Diagnostic trouble codes, not vechicle id numbers.
Bad spark plug, plug wire. I hade that problem it was a cracked head "Expensive"
Cylinder #4 misfire
2006 Pontiac grand prix recurring number 4 cylinder misfire diagnostic code? What could it be?
Was an intake manifold gasket for me.
Cylinder #4 misfire.