Fuel Line Pressure Inspection
WARNING:- Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death. Fuel can also irritate skin and eyes.
- To prevent this, always complete the "Before Repair Procedure".
Fuel System Before Repair Procedure
CAUTION: Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is tree of foreign materials.
1. Disconnect the negative battery cable.
2. Squeeze the tabs on the quick release connector of the fuel main hose and disconnect the plastic fuel hose.
3. Push the SST quick release connector into the fuel distributor and fuel main hose into the SST until a click is heard.
4. Turn the lever on the SST as shown.
5. Connect the negative battery cable.
CAUTION: Connecting the wrong DLC terminals may possibly cause a malfunction. Carefully connect the specified terminals only.
6. Short the DLC terminals F/P to chassis Ground using a jumper wire.
7. Turn the ignition switch on and measure the fuel line pressure.
Specification
270 - 310 kPa (2.7 - 3.2 kg/Sq.cm, 39 - 45 psi)
8. Turn off the ignition switch and disconnect the jumper wire.
- If the pressure is higher than specified, inspect the fuel pump maximum pressure. If normal, inspect fuel return hose or the pressure regulator is clogged.
- If the pressure is lower than specified proceed to step 9.
9. Measure the fuel line pressure while turning the lever as shown.
- If the fuel line pressure quickly increase, inspect the pressure regulator.
- If fuel line pressure gradually increase, inspect the fuel pump maximum pressure.
- If the fuel pump maximum pressure is normal, inspect for clog between fuel pump and pressure regulator.
10. Disconnect the SST.
NOTE: A checker tab is integrated with the quick release connector for new plastic fuel hoses. The checker tab will be released from the quick release connector after it is completely engaged with the fuel pipe.
11. Inspect the plastic fuel hose and fuel pipe sealing surface for damage and deformation, and replace as necessary.
12. If the quick release connector O-ring is damaged or has slipped, replace the plastic fuel hose.
13. Reconnect the fuel main hose to the fuel distributor until a click is heard.
14. Pull the quick release connector by hand and verify that it is installed securely.