Originally Posted by barry123400

I have found that a soaking with laquer thinner seems to cut deposits fairly well. There is something in the back of my mind about acetone.

Acetone is the better or more powerful solvent but laquer thinner is good enough to provide a good soaking cleanout. Probably cheaper but then again I buy it in five gallon cans. I have no ideal if you can run laquer thinner with diesel fuel. Gas cars seem to run on the stuff undiluted fairly well I found out.