So I realize that the last post for this thread was a few years ago but I am having a similar issue with my universal m25xp. Can not get above 2000RPM in gear and above 1500RPM gives the black soot with smoke. Cleaned the air filter, exhaust
riser was rebuilt and I cleaned the mixing areas where exhaust meets water
. There has been 75 gal of fuel
run through at high RPM
with not much else than a dirty transom. The filters have been changed a couple times and no help.
Manual says low compression
, overload or propeller
I am thinking about compression
testing the engine, but this thread has a lot of info about over pitching. The prop for all I know is original and hasn't given any issues before but I have about 1yr experience with this boat. (83 Catalina
Would excessive prop-walk in reverse indicate it is over pitched? It's almost as if I can't back up straight at all. Even when the rudder
is hard over to the opposite direction. Over pitched?
Sandy or anyone, if you can give me a solution that worked I would greatly appreciate it.