Fleetwood FWD V6-260 4.3L DSL (1985)
Fuel Supply Line: Customer Interest
Fuel - Line Vibration Or Buzz
Bulletin No.T 85-23 File In Group 6C
Number
91
Date
Nov. '84
SUBJECT:
FUEL LINE VIBRATION OR "BUZZ"
MODELS AFFECTED: 1985 FWD DEVILLE AND FLEETWOOD
FIGURE 1 - FUEL LINE ROUTING
Some 1985 FWD Deville and Fleetwood vehicles may experience a fuel line vibration or "buzz" under light to medium throttle acceleration. This
vibration is transmitted through the hard plastic retainers attached to the fuel feed and return lines.
A fuel line isolator kit (P/N 1632307) is available through GMWDD to repair this condition. To determine if this isolator kit is needed to repair a fuel
line noise condition, hoist the vehicle and examine the fuel line isolation mounting in the positions indicated in Figure 1. If the vehicle already has the
rubber isolation mountings included in the service kit and is exhibiting fuel line noise, inspect for fuel lines grounding against the underbody or
underbody components and correct as necessary. If the vehicle has the plastic isolation mountings, install the isolator kit as follows:
1.
Hoist vehicle.
FIGURE 1 - FUEL LINE ROUTING