Corolla/FX L4-1587cc 4A SOHC (1984)
Checking The Fuel Pump Diaphragm
5.
If any deficiencies are found, replace the fuel pump.
6.
Block off the vent holes under the pump casting with your fingers. Check that the pump arm locks.
Checking The Fuel Pump Oil Seal
7.
If the arm does not lock, the oil seal is bad and the fuel pump should be replaced.
