The 1984 and later 6.2L California applications use an internal idle spring, which controls the gap between the sleeve and the washer. (Figure 4-74). The…

Now for a look at the operation of the assembly that controls the engine speed at low idle and high speed. The Min-Max governor. Illustrated…

All pumps are equipped with a Housing Pressure Cold Advance solenoid. (Figure 4-67). This component has been designed to allow more advance during engine warm-up.…

A new head locating screw (#24566) with nylon filter has been introduced to prevent contaminants from reaching the advance piston area. See Figure 4-66. The…

See Figure 4-65. The advance piston orifice screw has been eliminated, and the orifice is now machined into the piston. The orifice size in 1984…

As with the previous advance system, the rotor’s force is transferred to the cam ring during injection. This force continually urges the piston toward the…

A second light load advance system, shown in Figure 4-61, is available for automotive applications that use min-max governing. In addition to the normal speed…

As noted previously, inlet metered pumps characteristically retard the start of pumping at light loads. To correct this condition, several forms of light load advance…

The inlet metered DB2 pump (Figure 4-60) has a pumping period with a variable beginning and a constant ending. That is, at minimum throttle positions…

When the pump is operating, the force required to displace the plungers inward plus the momentum of the rotor assembly transmitted by the rollers, produces…