Re: mercury 1989 90hp dosent run with fuel line conected from fuel pump
Do you mean that you remove the fuel line and bypass the fuel pump altogether? Otherwise what do you mean????running off the squeeze bulb?
I had the 115 version of that engine and at WOT is was always thirsty; not that it guzzled gas, quite the contrary, it had a hard time getting gas from the tank to the engine till I replumbed the fuel line, but your problem sounds like something else, like your floats in your carbs (at least one) are not causing your carb's fuel inlet valve to shut off the fuel causing flooding....mal-adjustment or dirty carbs.
Mark