4TNV98 & 4TNE98 Diesel Engine Section 4. Fuel System188Magnetic Valve (Stop Solenoid)Figure 7-31The magnetic valve (stop solenoid) turns on or offas the ignition switch of the vehicle is operated toopen or close the fuel path connected to the inletport of the plunger barrel.When the ignition switch is turned on, power issupplied to the magnetic valve to lift the armature,thus opening the fuel path.On the contrary, when the ignition switch is turnedoff, the armature is powered by the force of thespring installed in the armature to close the fuelpath. As a result, no fuel is fed to the plunger,stopping the engine immediately.
