Test Procedures - Innova 3640 Manual De Instrucciones

Testing

TEST PROCEDURES

TEST PROCEDURES
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.
• Before connecting the tester to the fuel system, apply a small amount of light grade
household oil or lubricant to the o-rings located in the port adapters.
• When attaching the gauge hose or adapters to test ports, make sure you use the proper
adapter for your vehicle. TAKE CARE not to damage the threads on the test port.
• Wrap shop rags around fitting when connecting or disconnecting the tester.
• Have shop rags ready to clean up leaks or spills.
Testing Systems WITH Schrader Valve Test Ports (Typical TBI & MFI Systems) (see
Figure 4)
Figure 4. Testing Systems With Schrader Valve Test Ports
RELIEF
VALVE
BLEED-OFF
HOSE
DRAIN
CONTAINER
a. Relieve fuel system pressure BEFORE connecting tester (refer to your vehicle's service
manual for procedures).
b. Loosen the fuel tank cap to release any pressure from the fuel tank.
c. MAKE SURE the ignition is off. Locate the fuel system's test valve or port. Remove the
protective cap.
The air conditioning test port looks similar to the fuel system test port. DO
NOT CONFUSE THESE PORTS. Refer to your vehicle's service manual to
ensure proper connections.
d. Connect the tester to your vehicle's fuel system:
6
TESTER GAUGE
GAUGE HOSE
(SCHRADER
VALVE)
FORD ADAPTER (FOR USE WITH FORD
AND SOME CHRYSLER VEHICLES)
Fuel