Georgiadawgs78
Senior Member
I've got a mercruiser 3.0 I/o in a pontoon that ran good up until about 4-5 weeks ago. It died out on the water with me and I found the problem to be a broke exhaust rocker arm and s bent intake push rod on the #2 cyclinder.
So I ordered a new set of arms and rods and sent the head off to be gone through for precautionary reasons. They said everything was good, no bent valves or warped.
So I put it back together and crank it out of the boat on a pallet and everything seemed to run fine. Throw it in the boat and put the ear muffs to it and it cranks and idles perfect but when you accelerate it either spit and sputters some or will run up to what ever RPMs and run a few seconds then just dies. I can back off of it some and play with the throttle and sometimes it will keep running and some times it sputters and dies.
Anybody have a clue what might be wrong? As far as I know I got everything hooked back up correctly but there's a chance I got something wrong. I'm a little worried I may have the valves too tight but I adjusted them per the manual and they sounded good from what little experience I have.
So I ordered a new set of arms and rods and sent the head off to be gone through for precautionary reasons. They said everything was good, no bent valves or warped.
So I put it back together and crank it out of the boat on a pallet and everything seemed to run fine. Throw it in the boat and put the ear muffs to it and it cranks and idles perfect but when you accelerate it either spit and sputters some or will run up to what ever RPMs and run a few seconds then just dies. I can back off of it some and play with the throttle and sometimes it will keep running and some times it sputters and dies.
Anybody have a clue what might be wrong? As far as I know I got everything hooked back up correctly but there's a chance I got something wrong. I'm a little worried I may have the valves too tight but I adjusted them per the manual and they sounded good from what little experience I have.