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I was riding my 1977 xs400 and suddenly the was a small lurch and the engine died. When the electric starter is actuated, it sounds as though the starter motor is spinning without any load. The kick starter moves smoothly and oddly easily. I removed a spark plug and put a thumb over the opening...
Is it safe to use 0000 grade steel wool on the faces of the pistons to remove carbon? I have been using 000 grade wool and kerosene to remove head gasket residue; is this a good idea?
1977 XS400D.