Re: 1975 mercury 150 h.p. 1500 powertrim help
I just bought this moter. The old owner told me the last 5 out of 6 times he took it out it bogded down and had to be towed back. I have started it and it runs great in the driveway. The old owner told me that it would run good in the driveway but bog down and die on the lake. Any Ideas? thanx
Well it sounds like a fuel delivery problem. Likely culprit is the fuel pump followed by dirt in the tank and or carbs. The good news is your electrical is working as it runs fine in the driveway. I am currently rebuilding a 75 1500 block, one of my favorite inlines. Another obscure problem is if the ears on the fuel quick connect fitting are worn down the fuel fitting will not open enough and it will restrict fuel flow. At this point you need verify that the fuel tank is clean, there is no water or dirt in the carb fuel bowls and that all your hoses are in good shape, get it on the boat instead of the driveway and report your results with the best description you can of how it BOGS , also at what rpm does it die out and can you restart it after it dies. Don't go so far out that you will regret paddling back
. Test it into the wind and just do short runs.
