Equus 3640 - Fuel Injection Pressure Tester - Manual (Page 11)

Testing
Fuel 2-4
p. Wrap a shop rag around test port area
to avoid fuel spray and to absorb
excess fuel. CAREFULLY disconnect
the gauge hose from the port adapter.
NOTE: If installed, remove the Ford
adapter from the vehicle's test
port.
q. Remove the bleed-off hose from the
drain container and hold both gauge
hoses over the container to let any
remaining fuel drain. Store the tester
in a well-ventilated area to dry
completely.
r. Recheck all fuel system connections,
then start the engine. Check for any
leaks and repair as necessary.
NOTE: The engine may crank for several
seconds before restarting.
2.2.2 Testing Systems WITHOUT Schrader-Type Test Ports (TBI & MFI Systems)
(see Figure 6)
WARNING: Fuel injection systems are under high pressure. You MUST
relieve system pressure before connecting the tester. REFER
TO YOUR VEHICLE'S SERVICE MANUAL FOR
PROCEDURES.
HOSE
CLAMP
RELIEF
VALVE
TESTER GAUGE
GAUGE HOSE
BLEED-OFF HOSE
DRAIN
CONTAINER
FUEL
RETURN
LINE
FUEL
PRESSURE
LINE HOSE
CLAMP
HOSE
CLAMP
TEE
FITTING
ADAPTER HOSE
TESTING SYSTEMS WITHOUT SCHRADER VALVE TEST PORTS
INLET
HOSE
Figure 6. Testing Systems Without Schrader Valve Test Ports
RELIEF
VALVE
Figure 5