Quote:
Originally Posted by slonomo
I think there is a fuel delivery issue. Usually too much fuel means a carburetor that has a stuck or malfunctioning float. The fuel pump? Not sure how a bad fuel pump will pump more fuel, they usually pump less fuel when they fail. The carb float should stop the flow of fuel anyway. Unless the fuel is entering the engine from the vacuum pulse hose? Check that while cranking the engine. Pull the vacuum pulse hose off the engine and crank the engine, see if fuel is coming out from there, it should not. If it does, replace the fuel pump. Fuel should only come out of the hose that goes to the carburetor.
|
Yes yes that's what I'm thinking, a breached diaphragm will allow tons of fuel to be sucked into the crankcase. That would be especially bad on an oil injected system too, it'd be flooded with straight unmixed fuel.....
Unfortunately with these engines there is no pulse hose, the pump is mounted directly to the crankcase.