Ninety-Eight V6-252 4.1L VIN 4 4-BBL (1982)
Accelerator Pump: All Technical Service Bulletins
Fuel Pump - Driveability and Tip-In-Hesitation
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
