Hey guys hoping for some help. The other day I was driving and had a p0304 code come on. I replaced the plugs thinking that was the culprit but then got a p2311 code so I replaced the ignition coil on cylinder 4 and still same issue. I then swapped plugs and coils with cylinder 2 and the code did not follow. When I switched the plugs I noticed that the ones in 4 still looked brand new like there not getting power. Anybody have a similar issue? Any help would be greatly appreciated!

2 on left from cylinder 4. In socket cylinder 2

 

Looks like you are getting an odd burn pattern on number 2....

Need to check and see if the PCM is firing the coil, and the injector. Should be able to rent/borrow noid lights from your local parts store.

 

Hey thanks for the reply! Can the noid light also be used on the ignition coil or just for testing the injector? Both codes are pointing towards cylinder 4 so hoping everything is good on 2 and the pattern is just due to the motor only being run a few minutes to see if anything cleared the code. Truck starts and runs fine besides a shake at idle

 

I *think* so...... But, no personal experience.