Grandpere wrote:
Check the electric fuel pump that is located by the right rear tire. It gets the fuel to the mechanical fuel pump. rubber fuel lines might be a problem, but that would show up more when you are stepping on the gas than dying at idle. Mine acted the way you are describing but that was after a complete rebuild of the carb and no fine tuning was done when it was installed.
One FYI I always add Lucas fuel treatment to our MH, 1 cup for every 10 gallons of gas. It is expensive, but not having fuel problems makes it worth it to me.
Mine was the opposite. The mechanical pump would draw through the failed electric pump up until about 45 MPH and it would run out of fuel. It would run great below that speed.
When the rubber lines failed, the fuel pump couldn't suck any fuel out of the tank at all. It would cough and sputter at idle.
EDIT: I should have emphasized Grandpere's advice. Whether it's your problem or not, make sure that fuel pump is running (behind the right rear wheels mounted on the frame). I still suspect fuel rotted fuel lines. Again, unhooking the fuel at the carb and cranking (into a coffee can or something - not letting it spray all over the place) will tell you for sure.
