Oldsmobile 88 fuel pump failure during engine operation despite pressure increase when ignition is on on Oldsmobile 88

Some Oldsmobile 88 owners report experiencing fuel pump failure, which can lead to engine stalling or cranking without starting. Despite an increase in pressure when the ignition is turned on, some owners find that the fuel pump still fails during engine operation, potentially indicating a weak pump or a clogged fuel filter. Additionally, intermittent problems such as hesitation, stalling, and backfiring may arise, suggesting underlying fuel system issues. To diagnose these problems, some owners are advised to reconnect the fuel pump and perform a pressure test, with the expected pressure being around 45 psi; lower readings may indicate a weak pump or a clogged filter. If issues persist, it is recommended that owners consult a mechanic for a thorough inspection and testing of the fuel system components to identify the root cause of the failure.