Okay, above mentioned outboard started idling rough/dropping a cylinder. had to adjust the idle up a little to keep her cranked.
did compression check
1,2,4 cylinders all 125-130psi
#3 cylinder 100psi.
Opened head and noticed very small imperfection where a ring is starting to sheer. cylinder...
first post guys. been reading this forum for a long time. here is my current problem.
25hp tiller - went from running fine 2 months ago - to having a weird "pulse" losing RPMs at full throttle after running 20 minutes or so, then clearing up. i thought maybe junk in carb. cleaned carb. same...