C 20 3/4 Ton Pickup 2WD V8-379 6.2L DSL VIN J FI (1982)
Diesel MFI Pump: Customer Interest
Fuel - Diesel Injection Pump Advance Piston Worn/Binding
Number:
85-176
Section:
6A
Date:
FEB., 1986
Subject:
DIESEL FUEL INJECTION PUMP ADVANCE PISTON
Model and Year: 1982-1985 C,K,G,P AND CUCV
WITH 6.2L DIESEL ENGINES
TO:
ALL CHEVROLET DEALERS
Some vehicles equipped with the 6.2L diesel engine may experience conditions such as loss of power, hard starting, erratic engine
operation, and excessive black or white smoke. If on-vehicle diagnosis indicates that the injection pump is the problem, a worn or
binding injection pump advance piston may be the cause.
A new nickel-plated advance piston has been introduced on the 1986 6.2L diesel engine. This nickel-plated advance piston reduces
piston/bore wear and piston seizure. This piston has been made available through Stanadyne Diesel Systems dealers as a service part
for 1982 - 1985 6.2L diesel fuel injection pumps.
Installation of the nickel-plated advance piston must be requested by the dealer when the pump is sent to the Stanadyne dealer for
repair.
Stanadyne Part Numbers:
Description
P/N
Nickel-plated Advance Piston (Standard Bore)
27865
Nickel-plated Advance Piston (.008" Oversize)
27869
