Diesel Engine - Injection Pump Timing

Number: 84-63

Section: 6C (VIm)

Date: Feb., 1984

Subject: DIESEL ENGINE INJECTION PUMP TIMING


Model and Year: 1978-84 IMPALA, CAPRICE, MONTE CARLO, MALIBU, EL CAMINO, CHEVETTE AND C-10 TRUCK VEHICLES EQUIPPED WITH DIESEL ENGINES

TO: ALL CHEVROLET DEALERS


Anything that affects the fuel pressure to the injection pump such as a plugged filter or pinched line will change the timing. A restricted fuel return line will also cause a timing shift. If the pump timing is adjusted, and later it is discovered that the fuel system is restricted, the timing system may be incorrect. Should this situation be encountered, it will be necessary to check and adjust pump timing as necessary.