Re: Fuel Pump Savvy
I have experienced this confounding issue with my Merc too. What I found was a tiny port in the main jet gland (fuel passage from bowl to venturi) had become clogged from winter rest. This port is essential to the atmospheric operation of this carb! <br /> Remove the fuel bowl and main jet (only if it's in the very bottom of this passage). Look for a small port leading off at an angle, sometimes the casting will give an idea where it should be. Remember, this port is only a few thousanths of an inch. I ran a thin wire up there followed by carb spray followed by a healthy blast of air.<br /> If you block the vent hole in the carb mount base and shoot air into the carb front vent hole you should get air flying out the main jet passage. If not it's still plugged.<br /> I almost went to the rubber room on this one, but when I put it back on all worked grand!