hello I have a 2003 pontiac sunfire 2.2L eco. It started throwing a code P0300 random misfire code. (cyclinder 1, 3, 4) were misfireing. Replaced the spark plugs, spark plug boots and also ignition module assembly. Still trowing code. Compression is good in all cyclinders, fuel pressure is 57 p.s.i. All vaccum lines seem to be good. When driving down the street up to speed there is no lack of power and seems to be runing good, no misfires, but when clutch is pushed in it will stall. No other code are comming up.
Just wondering if anybody else has had a similar problem, not sure where to look next. Maybee valve problems?? or cam?? any help would be great
Thanks..
Just wondering if anybody else has had a similar problem, not sure where to look next. Maybee valve problems?? or cam?? any help would be great
Thanks..