My ox66 225 swsii runs fine until it hits 3000rpms then starts a bad stutter or misfire. I pulled it home and haven’t had a chance to look at it? Any recommendations on where to start?
check all the usual stuff:
-check plugs
-check fuel (bad stinky fuel, or water)
-check compression
-check if fuel lines are all tight(any bit of loosness will cause your fuel pump to suck air. i had a johnson that did the same thing.)
if nothing looks bad, then youll have to get more specific
-check ohms on coils
-check pick up tube
-check head gaskets
there are alot of possibilities without doing some basic test