Corsica L4-134 2.2L (1991)
Fuel Pressure: Testing and Inspection
Fuel System Schematic.
WARNING: To reduce the risk of fire and personal injury, it is necessary to relieve the fuel system pressure before connecting a fuel pressure
test. Refer to Fuel Pressure Release Procedure.
CAUTION
To reduce the risk of fire and personal injury:
1.
It is necessary to relieve fuel system pressure before connecting a fuel pressure gauge.
2.
A small amount of fuel may be released when disconnecting the fuel lines. Cover the fuel lines with a shop towel to catch any fuel leaking out.
Place the towel in an approved container once the lines are disconnected.
3.
DO NOT pinch or restrict nylon fuel lines to avoid severing. If nylon fuel lines become kinked, and cannot be straightened, they must be replaced.
4.
Wear safety glasses at all times.
FUEL PRESSURE TESTING
1.
Loosen fuel filler cap to relieve fuel tank pressure. (DO NOT tighten at this time.)
2.
Raise the vehicle to disconnect the fuel pump electrical connector, then lower the vehicle.
3.
Start and run the engine until the residual fuel is consumed. Engage starter for three seconds to assure fuel pressure relief.
4.
Disconnect the negative battery cable, and locate the fuel feed quick-connect fitting.
5.
Grasp both ends of the fitting, and twist the female end 1/4 turn in each direction to loosen any dirt in the fitting.
6.
Using compressed air, blow the dirt out of the quick-connect fitting.
7.
Choose the correct tool from the separator tool set J37088-(A) or equivalent for the size of the fitting. Insert the tool into the female end of the
connector, then push inward to release the male connector.
8.
Connect the gauge quick-connect adapters (J29658-89 or equivalent) to the fuel pressure gauge (J29658-(B) or (c) or equivalent gauge).
9.
Lubricate the male tube end of the fuel line and the gauge adaptor with engine oil.
CAUTION: To reduce the risk of fire and personal injury: Before connecting the fuel line quick-connect fittings, always apply a few drops of
clean engine oil to the male tube ends. This will ensure proper reconnection and prevent a possible fuel leak. During normal operation, the O-rings
located inside the female connector will swell and may prevent proper reconnection if not lubricated.
10.
Connect the fuel pressure gauge.
a.
Push connectors together to cause the retaining tabs/fingers to snap into place.
b.
Once installed, pull on both ends of each connection to ensure that they are secure.
11.
Raise the vehicle to connect the fuel pump electrical connector, then lower the vehicle.
12.
Connect the negative battery terminal and check fuel pressure.
13.
Relieve the fuel system pressure. See steps 2 and 3.
14.
Disconnect the negative battery terminal and fuel pressure gauge.
15.
Reverse steps 4 through 10.
16.
Tighten fuel filler cap and connect the negative battery terminal.
17.
Cycle the ignition switch twice, waiting ten seconds between cycles. Check for fuel leaks.
