Any Ideas

[stud4u13]

I just pulled the heads off of my 302 and I found that my pistons were really carboned up. Do you guys have any ideas as to what would cause that and what could i use to get it off. Oh and the valves look pretty good except for on the back side there is some more carbon build up. I just need to get a spring compressor and I can take car of that problem.

 

[mo_dingo]

Cause - Running exhaust fumes back into the motor (EGR valve), the oil breather tube and from the normal combustion cycle. Not much you can do to stop it.

Solution. Take a wire brush that attaches to a 110V drill and go to town. Some areas require scraping. I scraped for so long my back hurt. It sucks, but my pistons were nice and shiny afterwards.
Scott

 

[donjohn]

old age