Pontiac G6 Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
Howdy yall,

2007 G6 GTP
Cylinder 2 misfiring

I replaced spark plug; still a misfire.

I swapped coil pack 2 with coil pack 4; still a Cylinder 2 misfire.

I've reached the limit of my troubleshooting knowledge, any ideas?
 

·
Premium Member
Joined
·
4,232 Posts
Could be an injector issue, could try swapping those around and see if the problem follows.
Or try some cleaners
 

·
Registered
Joined
·
2 Posts
Discussion Starter #3
FIXED

I added Lucas fuel injector cleaner and the rough idling disappeared and my gas mileage went up significantly from low 20s to 28.5. Engine light still on but I haven't reset it yet.
 
1 - 3 of 3 Posts
Top