Fuel Pump - Driveability and Tip-In-Hesitation

83olds3

SUBJECT NUMBER: 83-T-10
DRIVEABILITY AND TIP-IN-HESITATION CORRECTION 1976 TO 1983 DUAL AND QUADRAJET CARBURETORS
VITON ACCELERATOR PUMPS DATE: May 9, 1983
Viton accelerator pumps are now available for service from WDDGM for correcting conditions of driveability and tip-in-hesitation when a customer is using a high aromatic fuel, gasohol or has dry-out conditions stemming from long periods of non-operation..

Two (2) types of viton accelerator pumps are released and must be used in the correct float bowl assembly.

FIGURE 1 - (DUALJET SHOWN):

Float bowl assemblies that have the letters "MW" (machined well) embossed next to the throttle position sensor electrical connector use the red lip (with garter spring) viton accelerator pump ONLY. See Figure 1.

If the letters "MW" are not on the float bowl assembly a blue, thin lip viton accelerator pump can be used as indicated on the accelerator pump part number conversion chart.

FIGURE 2 - VITON ACCELERATOR PUMPS:

Viton service replacement pumps are identified as H.D. (Heavy Duty) in the parts book and are shown in Figure 2.
Dual and Quadrajet pump part numbers and applications are as follows:

Red Lip (With Garter Spring) 17072978 Machined Well Only (MW)
Blue, Thin Lip - See Part Number Conversion Chart Non-Machined Well Only

Viton Accelerator Pump (Blue, Thin Lip) Part Number Conversion Chart

To use the chart locate the original service part number accelerator pump, for the correct engine application, in the parts catalog. Then cross reference the original service pump number with the viton pump number as shown in the chart.

(Blue, Thin Lip)
Orig. Serv. No. Viton Pump No.

7048867 17074102
7048874 17074108
17051117 17074109
17051374 17074104
17053072 17074103
17061080 17074113
17064155 17074117