Hi lazairkid,
How do you run the fuel lines for your electric pump? Does the Walbro carbs have to suck through the electric pump after the engine is running? If so what make of electric fuel pump is it? I have an electric fuel pump as well, but will not push gas to the Walbro carb (even when engine is turned over). I assume that the electric pump I have only puts out 4 to 5 psi. Good for float bowl carbs, but not for pumper carbs. And there is no way the Walbro carb can suck throught this electric pump that I have. I had no problems running the engines before, on the test stand, but now with the fuel so low in the airplane, I think the Walbro carb are having a hard time sucking the fuel. That's almost 4 feet of head. Daffy