1991 Force Runs smooth, BUT

[happyzee]

Hi! All.<br />Starting a new 1991 Force 150: <br />I finally finished replacing the entire electronics and the water pump, and took it to the river today. Great running machine. But,<br />1) 4100 RPM max ?<br />2) 41mph max, ah but smoooooth. <br />3) from the getgo, no power.<br />I'm told that I should see 55+ mph<br />After about 4 hours of running and 1/2 a tank of gas later, the motor just jumped upto 58mph for a minute or two (when I maxed the throttle, I throttled back and when I maxed it again 42mph max. (What a feeling at 58mph!!! ).<br />Anyone have an idea of where I should start to look?<br />Fuel/carbs problem maybe???<br />It is a three carb engine.<br />Maybe a stuck fuel float???? <br />BTW, I never could get it to do that again. <br />Comments.... Ideas.....<br /><br />Thanks all<br />Ken Z.

 

[ewaltb]

Re: 1991 Force Runs smooth, BUT

happyzee - <br />Did you run the boat for 4 1/2 hours straight? Have you checked the fuel pump diaphram? I had a similar problem a couple of years back when I bought my engine. It sat through a few seasons with out running, first time out blew a hole throught the diaphram it was so dry-rotted. (quarter sized hole)<br />Check if the carbs are spilling an unusual amount of gas. Good luck.

 

[sony2001]

Re: 1991 Force Runs smooth, BUT

I would think one cylinder is not working, and probably not sparking either.