As far as your fuel pressure problem goes, is this a new development? Does it go away if you turn on the boost pump? If neither pump can produce adequate pressure, since it is unlikely they both are bad, I suspect you still have a fuel supply problem (or a bad pressure sensor), otherwise I suspect one of the pumps is weak.
If you have a Stromberg carb, the pressure feed version requires a different float valve seat. Make sure you have the right part. If your boost pump is in series with the engine driven pump, and the engine driven pump fails due to a leaky diaphragm, use of the boost pump can result in a lot of gas being pumped into the engine compartment. You are better off plumbing the boost pump in parallel with the mechanical pump. That way, you need a failure of both the diaphragm and the outlet check valve before you have fuel leakage. -- John Cooper Skyport East www.skyportservices.net
