Fuel Pressure - Relief Procedure Update

91pontiac03

Bulletin Number: 91-6-30
Reference Number: 136301
Publish Date: 3/91


Subject: SERVICE MANUAL UPDATE - SECTION 6C FUEL SYSTEMS - PRESSURE RELIEF PROCEDURES (REVISED PROCEDURES)

Models
Affected: 1989-91 GRAND AM MODELS WITH 2.3L AND 2.5L


This revised Fuel Pressure Relief procedure replaces that information found in Service Manual Section 6C.

CAUTION: TO REDUCE THE RISK OF FIRE AND PERSONAL INJURY, RELIEVE THE FUEL SYSTEM PRESSURE BEFORE SERVICING FUEL SYSTEM COMPONENTS.

AFTER RELIEVING SYSTEM PRESSURE, A SMALL AMOUNT OF FUEL MAY BE RELEASED WHEN SERVICING FUEL LINES OR CONNECTIONS. TO REDUCE THE CHANCE OF PERSONAL INJURY, COVER FUEL LINE FITTINGS WITH A SHOP TOWEL BEFORE DISCONNECTING, TO CATCH ANY FUEL THAT MAY LEAK OUT. PLACE THE TOWEL IN AN APPROVED CONTAINER WHEN DISCONNECT IS COMPLETED.

FUEL PRESSURE RELIEF PROCEDURE:

2.3L (VIN A and D) and 2.5L (VIN U)

1. Loosen fuel filler cap to relieve tank pressure (do not tighten at this time).

2. Raise vehicle.

3. Disconnect fuel pump electrical connector.

4. Lower vehicle.

5. Start engine and run until fuel supply remaining in fuel pipes is consumed. Engage starter for 3.0 seconds to assure relief of any remaining pressure.


6. Raise vehicle.

7. Connect fuel pump electrical connector.

8. Lower vehicle.

9. Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.