[Carlito2409]

So everything has been fine with my car until recently. It started to missfire really bad. I pulled the code and it said Missfire in Cylinder 4. So I did what anybody would do, I swapped coilpacks around to see if it was them. The missfire only comes at random ass times. It could be fine all day then suddenly start missing out. So anyways, after I switched the coil pack around it drove fine all day, then it suddenly started missfiring again. It was cylinder 4, so I changed the sparkplugs. Drove fine for a day, then it started missfiring again! Still in cylinder 4. Everytime it starts missfiring, its only at RPMs lower then 3k. So if I give my car a nice rev, it will go away for a couple seconds, then come back. Or sometimes when I rev it, it will go away entireley. Not sure whats going on, maybe bad gas or a semi clogged 4th injector? Please help!

 

[JTypeS]

Swap cylinder 4 injector to another cylinder n see if the misfire follows the injector or not

 

[Carlito2409]

Swap cylinder 4 injector to another cylinder n see if the misfire follows the injector or not

Thanks! ill do that as soon as possible.....but considering its snowing here again =.= not sure when that will be lol:firemad:

 

[JTypeS]

Hopefully is a clogged injector that would b best case scenario

 

[Carlito2409]

I checked my injectors and injector 4 has a broken O ring at the very end of the injector. Hopefully thats causing my problem, im changing it right meow.

 

[JTypeS]

I would still put da injector in another cylinder just to b sure since u have the fuel rail off

 

[Carlito2409]

Yes, i completely agree lol.

 

[JTypeS]

Well hopefully that o ring fix ur misfire... Did the check engine light came on wen it was misfiring?

 

[Carlito2409]

Ok, o ring did not fix it. But i believe i have finally deduced the problem....and its retarded lol. Since im 100% sure its not the coilpack, sparkplug, or injector, (because i swapped them all around) i looked at the female connector for that connects to the coilpack itself. It has 3 prongs on the inside. 2 of them were bright silver, and one was black and burnt. Im going to go ahead and assume that this could be the cause. Im going to put some dielectric grease on it and see if that helps. Its only on the cylinder 4 connector, so i really believe this could be it.

 

[Carlito2409]

And yes the CEL started blinking. But didnt come all the way on and stay on.

 

[JTypeS]

Damn bro hopefully is a bad connection to that coilpack

 

[JTypeS]

P0304 is prob the code u was getting

 

[Carlito2409]

Its fixed! It was bad connection due to the burnt wire on the wire clip, connecting to the coilpack. I bent the tab on the coilpack coordinating to the burnt clip, down slightly. It made a better contact and i have not had a problem since!

 

[JTypeS]

Thats good bro simple fix