Misfire cylinder #3 and #6

Hullo!

Originally I was having a misfire in cylinders #1 and #3, I went in and changed the spark plugs + wires as the truck now has 300,000 miles. I found oil in the spark plug wells of said plugs and changed the spark plug tube gaskets.

Now the truck runs fine when I start it up cold. After I have already drove it, and I start it up again, when it is still warm, it will get the check engine light and misfire codes in #3 and #6.

I have checked;
- coil packs
- wires
- spark plugs

Whats next? Fuel injectors?

 

Fuel Injectors, I had a constant misfire cylinder #1 replaced the fuel injectors the problem went away. Good Luck!!

 

Also! It will sporadically go away. Sometimes, when I'm driving.

And ok deal. I had a feeling it was something like that, just didn't want to start the work.

 

eek... your looking for a silver bullet fix when she needs to be daignosed... any sort of scan tool that shows things other than codes?

 

Haha true I am. I was hoping that someone had this exact same problem before. Always worth a shot. Might take it apart and look at my injectors as the next logical step. Im starting to feel like a lot of time has been spent diagnosing it though.