Innova 3640 Manual De Instrucciones página 10

Testing
TEST PROCEDURES
Testing Systems WITHOUT Schrader-Type Test Ports (TBI & MFI Systems) (see
Figure 6)
Figure 6. Testing Systems Without Schrader Valve Test Ports
CLAMP
ADAPTER HOSE
TESTING SYSTEMS WITHOUT SCHRADER VALVE TEST PORTS
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.
Systems without test ports require that fuel lines be removed or
disconnected. Please be aware that these lines may be UNDER PRESSURE,
and when removed could cause fuel spray and/or leakage onto hot engine
parts.
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. Verify the ignition is off. Locate the fuel system's inlet line (or hose) leading to the fuel
rail or throttle body. (Refer to your vehicle's service manual for locations.)
d. CAREFULLY disconnect inlet fuel line (supply line) from system connection point.
INLET MAY BE UNDER PRESSURE. Try to keep hoses in an upright position to avoid
excess fuel leakage. BE SURE TO CLEAN UP FUEL SPILLS IMMEDIATELY.
On Throttle Body Injection (TBI) systems, the supply line connection is typically
located at the throttle body. On Multiport Fuel Injection (MFI) systems, the supply
line connection is typically located at the fuel rail.
e. Connect the inlet fuel line (supply line) from the vehicle (the one removed in step d) to
one end of the tee fitting. Push the hose on to the fitting as far as it will go and secure
using a hose clamp. Tighten the hose clamp securely.
f. Locate the two hose pieces included with the tester (there are two different size hose
pieces). Select the hose piece which fits best on the open end of the tee fitting and on
the injection system's inlet fitting. Attach one end of the hose piece to the tee fitting.
Push the hose on to the fitting as far as it will go and secure using a hose clamp.
Tighten the hose clamp securely. Attach the other end of the hose piece to the injection
system's inlet fitting. Push the hose on to the fitting as far as it will go and secure using a
hose clamp. Tighten the hose clamp securely (see Figure 6).
8
FUEL
RETURN
LINE
HOSE
HOSE
CLAMP FITTING
RELIEF
VALVE
INLET
TEE HOSE
HOSE
CLAMP
TESTER GAUGE
GAUGE HOSE
BLEED-OFF HOSE
FUEL
PRESSURE
LINE
DRAIN
CONTAINER
Fuel