Ive been having a slight missfire for some time now. It only happens at idle, or when turning the car on off (its kind of stumbles off). Anyhow, I replaced the plugs for a new set of OE plugs, I replaced the coils, I adjusted the valves..... After all that the car has better fuel consumption, it accelerates smoother, but its still getting throwing on the a CEL 1399, and 0304 (I think thats it cant, I know its missfire cylinder 4). So what else should I troubleshoot?

Andres

 

Injectors

 

all of them?

 

I ended up going for all 4. I had misfire in 2 cyl and then ordered the injectors after reading up on the code here on the forum. By the time the injectors arrived, was seeing 3 cyl codes.

It is something in the design of the injectors...they just seem to have a limited life span for some reason.

You can clean em and get a bit more milage out of them, but others have said that is pretty temporary.

 

ohh, sweet looks like ill be buying four injectors. Thanks


Andres

 

I also had 4 injectors replaced to fix a misfire.

 

I had an issue with misfires, but I was lucky and only needed 4 spark boots.