Thanks, Tsubaki, that sounds much more like it. should have seen you ran a 19pitch on your earlier post.have to be on the lookout for one.

Maybe that 13 pitch prop had something to do with the piston turning into a small metal ball on the 225.

Actually, I tested the pump in the oil tank & unless it's more complicated than it looks, it was dead.

never thought about the oil injection stuff, I had my merc neutered years ago.

Don't much like those oil pump systems, & don't mind mixing.