I’m trying to figure out how to diagnose the code. I have checked plugs and wires which are good. Compression is good. No oil inside the plenum and it doesn’t appear to have hesitation or rough idle. At least not that I can tell. Not sure what else to check. Any ideas would be greatly appreciated.

 

Cap and rotor would be my next step.

Moving this to second gen ram section for ya. Welcome to DF!

 

thanks. Forgot to mention I checked cap and rotor and also cleaned injectors

 

Swap injectors on six and 8, see if the miss moves with the injector.

How's your cat? Usually, if the cat is starting to plug up, cylinder 8 has issues first.

 

I replaced O2 couple months ago and just recently replaced muffler. Entire exhaust is severely rusted. Didn’t think it would throw a misfire code so never thought about the cat

 

What brand O2's did you install?

 

they are NTK Brand. Replaced them back in August of this year

 

Ok, those should be good.

Is it only cylinder 8 that's spitting a code?

 

Yes. I tried swapping plugs but it didn’t change anything. I’ll try swapping injectors this morning and see if that makes a difference