Here are some Before and After pics, after cleaning up the heads and piston/valve areas.
I used a scraper and wire brush, and for the hard to get spots a small pointed tool to scrape it clean.Rob_P said:What did you use for the cleanup?
It's up to you if you want to check it out. I wouldn't bother, but it's easy enough to do, and with your recent rebuild you could probably get away with reusing the gaskets. It would be interested to see what it looks like. How many hours did you put on it since the rebuild?animalsonly said:How long has it been since you did it? Is this the result from poor fuel mix or improper point plup gap? I had my engine rebuilt last year. Should I check to seeif mine is that way? Pulling it would show me the ammount of build up over just one year.
Yeah that's not much. Maybe wait a couple years or until you reach the recommended hour limit to check them out. It's up to you of course. Anyone remember what Onan recommended for hour intervals on decarbonizing? My books in the shop. No it's not getting repaired. :lol:animalsonly said:I would say about 50 hours. It doesn't have a hour meter on it.
That's how you turn cast pistons into forged pistons. :sidelaugh:1031d said:Rob, its in the tractor manuals for the kohlers too. Actually killed my engine. There was such a large growth over the top of the cylinder that it hammered the top of the piston down past the first ring groove. Was like it when I bought it.