Tweet
I posted this issue a few weeks ago noting that after a throrough carb cleaning last summer, my low power/lack of rpm issue was resolved. A couple weeks ago after launching in Kittery the problem was back, about 3/4 power at best in gear - approximately 5 knots. There was a new occurance that I did not mention, uppon starting and engaging the gear there is a sould like a "thud," which sounds more like a transmission issue than the engine as it sounds fine in neutral. After a time it seems to deminish or go away all together.
I was planning to take the boat to Rockland, ME over the weekend and headed out as is. It ran several hours that first day and quit just as we were preparing to anchor. (Very considerate engine...)
The next day it would start, run very slow, even in neutral and then subsequently die when put in gear. Later that day, becalmed, I took off the exhaust where it connects to the manifold and pushed a wire through it finding nothing in the way of a significant blockage other than some very thick black sludge. I removed the spark arrestor, a small connector tube to the carb, (not sure if this is air or fuel) but it was clear regardless. I turned the carb jet in 1/4 turn thinking that it may help balance the equation if there was an air restriction issue. I put it all together and it ran... really. It didn't run any better than before but it did run. We spent the next two days motoring much of the way to Rockland. The engine is still running at reduced rpms, it starts well and sounds perfectly normal in neutral. At the end of the trip, it did produce more of the "thud" noise. These are intermitent every few seconds and fade over time.
Sorry for the long description, but does anyone have any suggestions for me?
Thanks gobs,
John II
I was planning to take the boat to Rockland, ME over the weekend and headed out as is. It ran several hours that first day and quit just as we were preparing to anchor. (Very considerate engine...)
The next day it would start, run very slow, even in neutral and then subsequently die when put in gear. Later that day, becalmed, I took off the exhaust where it connects to the manifold and pushed a wire through it finding nothing in the way of a significant blockage other than some very thick black sludge. I removed the spark arrestor, a small connector tube to the carb, (not sure if this is air or fuel) but it was clear regardless. I turned the carb jet in 1/4 turn thinking that it may help balance the equation if there was an air restriction issue. I put it all together and it ran... really. It didn't run any better than before but it did run. We spent the next two days motoring much of the way to Rockland. The engine is still running at reduced rpms, it starts well and sounds perfectly normal in neutral. At the end of the trip, it did produce more of the "thud" noise. These are intermitent every few seconds and fade over time.
Sorry for the long description, but does anyone have any suggestions for me?
Thanks gobs,
John II
Comment