PORT FUEL INJ. REPLACEMENT USAGE AND P/N'S LISTED. Chevrolet Citation 1985

For 1990-2009 cars

# PORT FUEL INJ. REPLACEMENT USAGE AND P/N'S LISTED

1985-86-87 CAMARO, CELEBRITY, CAVALIER WITH 2.8L V6 MPFI ENGINE 1987 BERETTA, CORSICA WITH 2.8L, V6 MPFI ENGINE

#### TO: ALL CHEVROLET DEALERS

During the 1986 model year, a limited number of first generation 2.8 Liter V6 MPFI engines were built with MULTEC fuel injectors. This new designed injector is being produced by the Rochester Products Division and looks slightly different from the Bosch injector. See Illustration for comparison. The primary difference in appearance between the two injectors is at the spray tip end, and is due to the different fuel metering designs. Fuel metering in the MULTEC injector is controlled by a ball valve/seat and director plate, while metering control in the Bosch design is done by a pintle valve and seat.

#### INJECTOR REPLACEMENT INFORMATION

First Generation Eng - 1985-1987 (with a single fuel rail)

INJECTOR TYPE GMSPO SERVICE PACKAGE Bosch Injector PIN 17111297 MULTEC Injector P/N 17111661

(Injectors will be supplied with appropriate retainers for single fuel rails).

Second Generation Eng - 1987 (with dual fuel rail)

INJECTOR TYPE GMSPO SERVICE PACKAGE MULTEC Injector P/N 17111799

(Injectors will be supplied with appropriate retainers for dual fuel rails).

Replace injectors individually, not in sets.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.