Fuel System - Pressure Relief

9216chevy09

Number: 91-314-6C

Section: 6C

Date: MAY 1991

Corporate Bulletin No.: 136301R


Subject:
FUEL SYSTEMS - PRESSURE RELIEF


Model and Year:
1989-90 CELEBRITY WITH 2.5L ENGINE
1991 BERETTA (GTZ ONLY) WITH 2.3L ENGINE


SERVICE UPDATE

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:

1989-91 2.3L (VIN A) and 2.5L (VIN R)

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.