1992 Merc Black Max Bogs down in Gear

[bassinT]

I was running my boat at the lake last night about 3000 rpm and the motor started to bog down (it had been running fine all day). When I pulled back to neutral it cut off. After this I could crank the motor and it would run in neutral if I would give it gas and keep it above 1000 rpm. In neutral I can rev the motor and it revs up and runs as long as I keep it above 1000 rpm, but when I put it into gear it will bog out. I finally manged to get it running in gear and it would only reach 1750 at WOT. I'm going to hook an auxillary tank and see if maybe it's just water in my gas (I hope it's something that simple). If it's not bad gas then I was wondering what else I should check ??

 

[dhsbuckley]

Re: 1992 Merc Black Max Bogs down in Gear

i have had 2 very similiar problems like this, one was a breather hose in the fuel tank had moved and could no longer let the tank suck air in as the fuel was used, and the other was on a brand new boat 7 hours old that i actually found silicone blocking the fuel line at the tank and the filter after being out in very rough weather.

 

[bassinT]

Re: 1992 Merc Black Max Bogs down in Gear

Thanks for the reply. I was in very rough water just before this problem started, so I'll check the lines for obstruction and I'll check to see if my tank is getting air before I start going into the carbs and fuel pump.