Fuel System Pressure Test

FUEL PRESSURE TEST
- Turn engine "OFF" and perform Fuel Pressure Relief procedure.

CAUTION: A small amount of fuel may be released, after the fuel line is disconnected. In order to reduce the chance of personal injury, cover the fitting to be disconnected with a shop cloth. Place the cloth in an approved container when disconnect is completed.

- Install fuel pressure gage J-29658A/BT8205, or equivalent, at the outlet side of the in-line fuel filter.
- Start engine and observe fuel pressure reading. It should be 62-90 kPa (9-13 psi).
- Relieve fuel pressure.
- Remove fuel pressure gage.
- Re-install fuel hose or pipe assembly to in-line fuel filter.
- Start engine and check for fuel leaks.

*** THIS PROCEDURE HAS BEEN UPDATED BY TSB # 90-6C-89, Dated 9/90

Some 1985-90 engines equipped with 2.5L, 2.8L, 4.3L, 5.0L, 5.7L or 7.4L may experience a condition where fuel delivery is interrupted to the engine causing a "no start condition". This condition may be caused by deterioration of the in-tank fuel pump coupler hose located between the fuel pump sending unit and the fuel pump. This condition may be repaired by replacing the original coupler hose with a new VITON coupler hose kit P/N 25028041. The kit consist of a new VITON hose and two clamps.