dhvaughan,

My understanding is that when a valve guide seal goes, oil can pass by and dilute the gas, which cuts the octane and causes a ping. At least that's how it was described to me.

I'm going to try a compression test next weekend to see where I'm at on each of the 8 cylinders.

 

the map will not cause the pinging. check for tech service bulit. my truck needs the computer reprogramed. will not retard the timming

 

still pinging. pissed off ready to trade it in

 

dude hang in there. I've been there myself.

 

Me too this is when you rebuild and make it better lol