Engine Stalling on Bumps/Rough Roads - TSB 842286EVIT
Carburetor Float: Customer Interest
Engine - Dies on Bumps/Rough Roads
Number:
84-228
Section:
6E (VIt)
Date:
Dec., 1984
Subject:
CARBURETOR FLOAT STABILIZER SPRING
Model and Year:
1982-84 S-10 PICKUP AND S-10 BLAZER WITH 2.8L LR2 ENGINE (CODE B)
TO:
ALL CHEVROLET DEALERS
Some S-10 trucks, both two-wheel and four-wheel drive, may stop running upon driving over severe rough road conditions such as parking lot "speed
bumps".
To minimize the effects of rough roads on the fuel level in the carburetor, a stabilizer spring can be installed. This spring will minimize the fuel level
variation.
The attached list of carburetor part numbers display the various components used in production. Determine which carburetor is in the vehicle and repair
if necessary with parts available from two (2) kits, P/N 7035156 and P/N 17110227.
1.
If the fuel inlet seat listed for the carburetor is not .120 in. diameter, install a new needle and seat (kit, P/N 7035156).
2.
A lower bowl insert, P/N 17073600, must be installed in place of the production part (P/N 17073600 is included with kit, P/N 17110227).
3.
A float assist stabilizer spring, P/N 17074354, must be installed if the carburetor does not have one (included with kit, P/N 17110227).
4.
With the new components installed, set the mechanical float level to 3.50 to 4.25 mm (4/32 to 5/32 inch).
5.
Install new air horn gasket.
Refer to Service Manual, Section 6C3 (closed loop) or 6C9 (open loop) for procedures to follow for part installation and setting.
1982 MODEL YEAR
MECHANICAL
FLOAT
CARBURETOR
FLOAT
STAB.
LOWER BOWL
FUEL INLET
AIR HORN
MODEL #
SETTING
SPRING
INSERT
DIA. (IN.)
GASKET KIT
17082348
7/16
NO
17071055
.120
17078011
17082349
7/16
NO
17071055
.120
17078011
17082350
7/16
NO
17071055
.120
17078011
17082351
7/16
NO
17071055
.120
17078011
17082353
7/16
NO
17071055
.120
17078011
17082355
7/16
NO
17071055
.120
17078011
17082356
13/32
NO
17071055
.120
17078048
17082357
13/32
NO
17071055
.120
17078048
17082358
13/32
NO
17071055
.120
17078048
17082359
13/32
NO
17071055
.120
17078048
1983 MODEL YEAR
MECHANICAL
FLOAT
CARBURETOR
FLOAT
STAB.
LOWER BOWL
FUEL INLET
AIR HORN
MODEL #
SETTING
SPRING
INSERT
DIA. (IN.)
GASKET KIT
17083348
7/16
NO
17071055
.120
17079078
