Skylark V6-173 2.8L VIN Z 2-bbl HP (1982)
Fuel Return Line: All Technical Service Bulletins
Engine - Fuel Starvation/Fuel Line Hammer
Model Year
1982
Bulletin No. 32-T-95A
File in Group
64
Number
32A
Date
Mar. '83
SUBJECT:
Fuel Starvation At High Altitude and Fuel Line Hammer All Altitudes
MODELS AFFECTED:
1982 Centurys & Skylarks With 2.8L, V6 Engines (VIN Codes "X" and "Z")
NOTE:
This Bulletin supersedes 82-T-95.
Please discard 82-T-95 and replace it with this one.
Some 1982 Centurys and Skylarks with 2.8L, V6 engines may experience fuel starvation at high altitudes during high ambient temperatures (70~F or
higher) or fuel line hammer during cool weather (70~F or lower) at all altitudes.
The fuel starvation at high altitude usually occurs when an attempt is made to restart a vehicle following a 15-20 minute hot soak.
The fuel line hammer can occur at all altitudes and usually happens at ambient temperatures below 70~F.
FIGURE 1
FIGURE 2
To alleviate either condition, install a brass restrictor with a 1 mm orifice, per Figure 1. Install the restrictor inside the 5/16" diameter hose portion of the
vapor return line located at the left side of the engine compartment (see Figure 2). To install the restrictor, disconnect the hose at the forward clamp,
insert the restrictor inside the hose, and reinstall the hose clamp, torquing it to 1.4 N-m to 1.7 N-m.
The restrictors can be acquired by contacting the local Buick Zone Office or fabricated locally.
WARRANTY INFORMATION
LABOR OPERATION NUMBER
T0082