Summit L4-1468cc 1.5L SOHC (1989)
Fuel Pressure: Testing and Inspection
OPERATIONAL CHECK (QUICK CHECK):
1.
Turn the ignition switch OFF
Fuel Pump Power Hook-up
2.
Apply battery voltage to the fuel pump drive connector to power the fuel pump.
Fuel Pump Operational Test
3.
Pinch the fuel hose to check that fuel pressure is felt.
NOTE: The fuel pump is mounted in the fuel tank and it operates submerged in fuel, therefore its operating sound is hard to hear without
removing the fuel filler cap.
PRESSURE TEST (DIAGNOSTIC CHECK):
1.
Reduce the internal pressure of the pipes and hoses by the following procedures.
a.
Disconnect the fuel pump harness at the rear of the fuel tank.
b.
Start and run the engine until it stalls. Turn OFF the ignition key.
c.
Disconnect the battery negative terminal.
d.
Connect the fuel pump harness connector.
High Pressure Fuel Hose Connection
2.
Disconnect the high pressure fuel hose at the delivery end.
CAUTION: Cover the hose connector with a shop towel to prevent splashing of fuel caused by residual pressure in the fuel line.
