2. With the ignition off, unscrew the nut and disconnect the wiring.
3. Unscrew and remove the shut-off solenoid. Remove washer or o-ring. On Bosch injection pumps, you may have to remove the fast idle cable base plate first.
4. Install the solenoid in reverse order.
Shut-off solenoid (latest models) - removal and installation
1. Before removing the shut-off solenoid, clean the surfaces adjacent to it so that dirt does not enter the fuel system.
2. Perform the above operations (see photo). After removing the solenoid, remove the piston and plunger spring (if they remained in the injection pump).
3. With the solenoid removed, pump the manual priming pump several times to remove dirt from the threads on the injection pump housing.
4. Install a new O-ring on the solenoid.
5. Install the solenoid in reverse order. Tighten the solenoid to the correct torque.