Reliant L4-156 2.6L SOHC (1984)
Technical Service Bulletin # 180586
Date: 860201
Fuel System - Vapor Lock
Models
1983-1985 Aries/ Reliant/LeBaron/ Dodge 400/600/ E-Class/Caravelle/ New Yorker Front Wheel Drive Equipped With 2.6L Engine
Subject
Vapor Lock
Index
DRIVEABILITY
Date
February 10, 1986
No.
18-05-86
P-363-C
This bulletin supersedes Technical Service Bulletin 018-04-85, which should be removed from your files.
The revisions in this bulletin include:
1.
Fuel hoses PN 4279877 and 4279874, and roll over valve PN 4185254 added to kits PN 4342945 and 4342946 on pages 10 and II.
2.
The wiring diagram on page 21 is corrected to show the proper wire positions in the 8-way natural colored connector.
Symptom/Condition, Diagnosis & Parts Information
SYMPTOM/CONDITION
Engine performance is gradually reduced in high ambient temperature or high altitude driving due to a drop in fuel pressure, which starves engine for
fuel (goes lean). Engine may not start until fuel system components cool off.
DIAGNOSIS
The following ore characteristics of vapor lock and should be observed on a fully wormed up engine. (Vapor lock does not affect cold engine
driveability.)
^
Occurs after hot soak, prolonged idle, or highway speeds at any throttle opening.
^
Sag due to lean mixture.
^
No black smoke at tailpipe.
^
Fuel pressure drops to 0.
^
Carburetor air horn dry.
^
No accelerator pump discharge.
^
May not start until engine cools.
^
Engine may not sustain heavy loads.
PARTS REQUIRED
ORDER ONE OF THE FOLLOWING THREE PART NUMBERS:
1983 K-PD (bi-metallic, fuel gauge, includes fuel
PN 4342945
tank assembly)
1983 K-CV, E-ET & 1984 K-PD, K-CV, E-ET (magnetic
PN 4342946
fuel gauge, includes fuel tank assembly)
1985 K-PD, K-CV, E-ET (magnetic fuel gauge,
PN 4342947
