CTboater420
Cadet
- Joined
- Aug 24, 2004
- Messages
- 11
I am hoping someone on here can help me out. I have a 1994 bayliner with a 3.0 mercruiser . The engine has been givin me a hard time lately. The problem begain with the motor spuddering out at about 3000rpms , so I check the gas and I had water in the tank so I added a feul/water seperator and added so waterzorb to the remaining gas and also put the 93 oct gas filled the tank . I also replaced the feul filter in the carb. After that the boat ran great for about a month we use the boat 4-5 times a week . Then It started again 2 weeks ago. This time I replaced the ignition coil this morning and I took it out and after about 20 min running at 3500 rpm started to spudder again . This doesnt always happen at the same rpm's but It happens between 3000 and 4300. Sometimes it will happen at say 3300 rpms . So that is why I thought it was the coil . The boat will not die or sthall , it just cuts out to about 2500 rpms and i have to back off the gas . runs fine under 3000 and at idle . Temp is good (new thermo) ,oil pressure is good . No strage sounds comming from anywhere. The oil is fine no water ,no water in the block either. So I am kinda thinking it may be the fuel pump but not sure. I do have to replace the manifold but i was holding off till the winter no leaks just a few years old. So can anyone give me a place to look ? Thanks for the help. Sorry for the rambling on .