I have had my 1966 Morgan 34 w/early model A4 for about 40 yrs' Great freshwater Lake Michigan boat with still the original well maintained A4 running fine. I have gone through 3 electrical fuel pumps in that time and about to install the 4th. My setup is tank - see through glass filter - nearby5/7 psi pump - carb. The filter is near the bottom of the tank side, pump a little lower on nearby bulkhead, carb a foot lower.
My question is: I keep reading 4psi or lower is the preferred pressure for a new pump. Most diagrams I see show the filter between the carb and the pump vs what I have always had with the filter between the tank and the pump. I am "sucking" gas through the filter vs the standard "pushing " gas through the filter. Does the filter placement effect required psi. Admittedly when the pumps and filter filements are new I get a little gas leak/smell by the carb and it tends to go away after some use and I use the exhaust fan somewhat periodically while motoring [always prior to starting]. If I put a new 4psi pump on with my current set up am I going to get adequate gas to the carb???
My question is: I keep reading 4psi or lower is the preferred pressure for a new pump. Most diagrams I see show the filter between the carb and the pump vs what I have always had with the filter between the tank and the pump. I am "sucking" gas through the filter vs the standard "pushing " gas through the filter. Does the filter placement effect required psi. Admittedly when the pumps and filter filements are new I get a little gas leak/smell by the carb and it tends to go away after some use and I use the exhaust fan somewhat periodically while motoring [always prior to starting]. If I put a new 4psi pump on with my current set up am I going to get adequate gas to the carb???
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