Fuel Pressure: Tracer

Relieve fuel system pressure. Connect Fuel Pressure Gauge (T80L-9974-A) and Adapter Hose (T85L-9974-A) to the schrader valve on the fuel supply manifold.
Start the engine. If engine does not start, remove fuel pump relay from circuit protection panel, and connect a jumper wire from relay terminal 87 in the panel to the alternator ouput terminal.
With pump running, check reading on pressure gauge. If pressure reaches 28.4-31.3 psi (20.0-22.0 Kg/cm² ) at idle with vacuum, 35.6-40.5 psi (25.0-28.5 Kg/cm² ) at idle without vacuum, pressure is okay. Go to step 4). If pressure is low, remove fuel pressure gauge. Connect fuel pressure gauge to fuel pump outlet connection, located under rear seat. With fuel pump check connector jumpered, turn ignition on. If fuel pressure is now to specification, check fuel lines for restrictions. If fuel pressure is still low, check fuel filter.
Insert test volume hose in a graduated container and open the flow control valve for ten seconds. If pump delivers 73.2 cubic inches/minute @ 36.3 psi (1.2 cubic liters/minute @ 25.5 Kg/cm² ), volume is okay. If volume is low, check fuel delivery system.
Disconnect jumper wire to stop pumps and observe pressure gauge. If pressure holds at 30 psi. (20.7 Kg/cm² ), system is okay. If pressure drops, check for leaks. If no leaks are found, check individual pumps. Install fuel pump relay.

NOTE: Maximum pressure is 64.0-85.3 psi (45.0-60.0 Kg/cm² ).