"I have a 471 in a 39ft trawle
"I have a 471 in a 39ft trawler.After working all night I was steaming home and it lost revs and stopped.Got it going,went home.It had a surge at idol not to bad.Worked 2 more nights.Had motor checked to find no.2 sleeve cracked.Has less than 800 hrs since rebuild.Mechanic recommended reco motor which I bought.Marine gear-blower etc put on new motor.When started it had a small surge at idol.Went to work and on way out less than 1/2 hr motor lost revs and stopped same as last time.Got it going,lots of black smoke till it started and kept going with a little smoke,idoled home.Found no.2 sleeve craked again.Has anyone got an idea please"
"I have a 471 in a 39ft trawler.After working all night I was steaming home and it lost revs and stopped.Got it going,went home.It had a surge at idol not to bad.Worked 2 more nights.Had motor checked to find no.2 sleeve cracked.Has less than 800 hrs since rebuild.Mechanic recommended reco motor which I bought.Marine gear-blower etc put on new motor.When started it had a small surge at idol.Went to work and on way out less than 1/2 hr motor lost revs and stopped same as last time.Got it going,lots of black smoke till it started and kept going with a little smoke,idoled home.Found no.2 sleeve craked again.Has anyone got an idea please"