Injection Pump Timing

WARNING: This page is about a different car, the 1984 Volkswagen Rabbit, 1984 Volkswagen Quantum, and 1984 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

To check injection pump timing, set crankshaft to TDC on No. 1 cylinder and align marks on flywheel and clutch housing. Check that marks on injection pump sprocket, mounting plate and pump body are aligned. Make sure that cold start device is completely pushed in (off).
Remove plug from injection pump cover. Install Adapter (2066) and dial indicator (0-3 mm range) in place of plug. Preload dial indicator to .097" (2.5 mm). Turn engine slowly counterclockwise until dial indicator needle stops moving. Zero indicator.
Turn engine clockwise until TDC mark on flywheel is lined up with reference mark. Check dial indicator reading against specifications. See INJECTION PUMP TIMING SPECIFICATIONS . If outside of checking range, loosen mounting plate bolts and support bolt. Rotate pump slightly to set timing within adjustment range. Tighten bolts and recheck pump timing.

INJECTION PUMP TIMING SPECIFICATIONS

Application

Range In. (mm)

Quantum

⁽¹⁾ .037-.042 (.93-1.07)

Jetta & Rabbit

With no paint dot

⁽²⁾ .033-.037 (.83-.93)

With Yellow paint dot

⁽³⁾ .043-.047 (1.10-1.20)

⁽¹⁾	Adjust to .039-.040" (.98-1.02 mm).

⁽²⁾	Adjust to .033-.035" (.84-.88 mm).

⁽³⁾	Adjust to .044-.046" (1.13-1.17 mm).