I've noticed a pattern with my truck throwing the cly 5 misfire code to after I get gas. The truck starts missing like crazy and pours white smoke and the on comes the cel. After a few days it'll go away until I need gas again and after it'll repeat the process. Any ideas?

 

Get the water out of your gas tank? Try getting gas somewhere else? Are you losing any coolant by chance?

 

when was the last time you did a tune up? (plugs, wires, cap rotor). Try switching the plug wire and plug out and see if that fixes it.

 

It eats a little coolant

 

Try running some gas dryer thru it, and see if that improves anything.

 

THanks man. I just did head gaskets and worked the heads. They're fine and I have new NGK v power plugs, wires and a new cap. However I've got an accel cap. Are those junk?