2001 Pontiac Grand Am Repair Question
Topics covered: Compression, Coil pack, Compression test.
Mileage: 164 miles.
Mileage: 164 miles.
Asked on March 8, 2012
Cylinder 4 misfire wont go away! 2.4 twin cam
Always cylinder 4. Replaced spark plugs, boots, coil packs, tested injectors and everything is fine. Tried flipping the coil packs and tried switching plugs around, the miss stays on 4. There is also a lot of oil leaked and pooled in by the plugs. Any ideas??
Asked by Materrock33Answer
Replied on March 8, 2012
what about switching injectors? have you done compression test.
Replied on March 8, 2012
Was told because injectors ohmed out fine, it wouldn't make a difference to move them. Should I still try it?
Replied on March 8, 2012
For the oil in there, do I need to replace the valve cover/cam cover? Or is there a simpler or easier reason and way to fix?
Replied on March 8, 2012
check this out. http://easyautodiagnostics.com/quad_case_study/coil_case_study_1.php
Replied on March 8, 2012
Replace the white coil housing.
Replied on March 9, 2012
Thanks, I'll try that & let you know.
Replied on March 14, 2012
Did a compression test. 160 on cylinders 1 and 4 and around 170-172 cylinders 2 and 3. Still only mifiring on 4..
Replied on March 14, 2012
Did you replace the coil housing?
Replied on March 14, 2012
Yes. But how is that related to the low compression?