Originally Posted by 6571
I am about to replace my third fuel pump on my 55 235 in ten years. Something is going on. All have failed causing the engine to sputter and shut down. After I shut the engine down and wait for a few minutes it starts and runs fine until the next 25 or 30 minutes. All have been purchased from Napa. They just stand by the warranty and give me another pump.
Did you disassemble any of the 3 pumps to see what failed? Diaphragm? Check valves?

Last edited by Tiny; 08/10/2017 3:16 PM.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission