I have a friend that has pulled the engine out of his truck and found this. It is the #4 piston and the truck is an 06 F250. The truck got stuck and the guy's son pushed it pretty hard trying to get it to pull out. The truck still ran after he got it out of the mud, but it was rough. He used a handheld pyrometer to check the exhaust temp on the exhaust manifold where it connects to the head. The #2 cylinder was dead. It had only ambient temp. It had heat in the #4 hole but only had 150psi compression. The other cylinders on that side had about 350 psi. Below is a pic of the #4 piston. The head looked fine. What do you think?
any ideas on this
- Thread starter fnlyfree
- Start date
ghohouston
Active member
Was the truck tuned?
ghohouston
Active member
I would guess an injector hung open or had a bad spray pattern
He is still assessing the damage. There are a few small pieces of metal sitting on top of the piston. Amazingly the cylinder wall looks good. The valves seem to be ok. There is one small indention on the bottom of the head that is shaped like the marks on the piston. (crescent shaped). Very small and very shallow. It looks like something got into the cylinder but we haven't found where it may have come from yet. Thanks for your reply.
mclean
Member
how does the turbo look?
ghohouston
Active member
That was my next question. How does the glow plug from that cylinder look?
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