Re: 1948 288 engine fuel pump stopped working.

Posted by HH56 On 2024/6/8 11:32:33

Make sure there are no surprise aftermarket filters in the line from the tank a previous owner added somewhere. Those can clog easily and stop flow. Also make sure there are no pinholes in a line. If the tank is just below a half or just above a quarter there are a couple of places inside the tank where if a pinhole in the pickup line develops, air will be sucked instead of fuel. Am presuming the tank filler cap is the same one you have always had but if it is different, make sure it is vented.

If all that is good then the pump shouldn't be a big deal to replace. Disconnect the lines and remove 2 bolts. The vacuum lines may be hard fittings instead of slip on rubber hose on a 48 so take note of where they connect to the top portion. The bottom portion has the rubber hose gas line in and the hard line out to filter or carb. The two bolts are sort of in the middle and may be wired together to keep them from loosening. Cut the wire to remove them. The bolts should be surrounded by fiber bushings plus fiber washers between bolts and any pump metal and a thick fiber gasket between pump and block. Those are used for heat insulators so take note where they are and don't lose anything. Once everything is free the pump will lift off.

Plate 86 in the 48-54 parts manual shows the pump and hard vacuum and fuel tubing on the original style pump. If a pump has been replaced and one from a later year was installed the tubing connections at the pump may be a bit different but routing is essentially the same.