I had written in a few weeks ago about a problem I was having with my motor. I got some great advise, rebuilt my carbs, and rebuilt the fuel pump. After that I had three or four successful outings.
Last week I had the boat out and everything was fine. I could accelerate with no hesitation. The motor response was really great. I had to leave early so I let a friend of mine take over. Later he said that about halfway through the day the motor would bog down when he would accelerate. So he kept it slow for the rest of the day. The next day I noticed that when I had lowered the motor to store in my garage, black oil was slowly leaking from the prop. Maybe like a tablespoons worth.
So I took the boat out today just to see for myself.. Here's what I have:
Motor starts fine
I can raise the throttle in neutral and the RPMs go up and water circulates, no problem.
In gear, slow speed up to about 30% is fine
When I try to accelerate beyond that, it struggles to stay steady and the RPMs drop. I back off the throttle and everything is smooth again.
I did notice at one point it seemed like it was struggling to keep steady at a medium slow speed.
Brought it back tonight and saw a little more black oil from the prop.
I have a glass inline fuel filter, and the fuel flow seemed to be normal throughout all of this.
Any suggestions on where top start or what to look for?