Camaro V8-305 5.0L VIN H 4-bbl (1983)
Carburetor Jet: All Technical Service Bulletins
Engine - Surge After Hot Soak
Number:
86-105
Section:
6C
Date:
AUG., 1986
Subject:
1983-86 CAMARO - ENGINE SURGE AFTER HOT SOAK
Model and Year: 1983-85 CAMARO 5.0L V-8 4-BBL (RPO L69) VIN CODE G MANUAL TRANSMISSION ONLY AND 1983-86 CAMARO 5.0L V
TO:
ALL CHEVROLET DEALERS
Customer comments of engine surge after a hot soak may be received. A hot soak is when a vehicle has reached operating
temperature, then parked for a short time, and restarted. The surge is caused by excessive fuel vapor in the carburetor bowl. This fuel
vapor is created by the temperature difference of the carburetor bowl and the fresh fuel delivered from the fuel tank on a restart. This
surge condition can be reduced by installing new design primary metering jets in the carburetor.
Part Numbers Of Carburetors Affected:
17059322
17084205
17085203
17086005
17083205
17084209
17085207
17086040
17083207
SPECIAL POLICY ADJUSTMENT
This special policy covers the condition described above for a period of five (5) years or 50,000 miles, whichever occurs first, from
the date the vehicle was originally placed in service.
The policy includes installation of a revised carburetor main jet and, if necessary, the installation of an auxiliary blower fan to direct
air at the carburetor bowl.
This "special policy adjustment" bulletin should be filed in the Special Policy Adjustment Bulletin binder previously furnished to the
dealer by General Motors.
REIMBURSEMENT
Claims for customer reimbursement on previously paid repairs are to be submitted to the zone office for review and disposition.
PRIMARY METERING JET REPLACEMENT:
Refer to appropriate vehicle service manual (Section 6C1) for carburetor disassembly and adjustment information.
NOTICE:
REPLACING THE PRIMARY METERING JETS IN THE E4ME CARBURETOR REQUIRES REMOVING THE MIXTURE
CONTROL SOLENOID AND THE FLOAT. THEREFORE, THE ADJUSTMENTS AFFECTING THESE COMPONENTS MUST BE
CHECKED AND ADJUSTED, IF NECESSARY, DURING REASSEMBLY. THE FOLLOWING STEPS SHOULD BE FOLLOWED AS
A GENERAL GUIDE TO THE REPLACEMENT OF THE METERING JETS.
DISASSEMBLY
1.
Remove air cleaner.
2.
Remove air bleed valve cover.
3.
Remove air horn.
4.
Remove solenoid adjusting (lean stop) screw and solenoid (rich) stop screw plugs.
5.
Remove mixture control solenoid assembly.
NOTICE:
IF TOOL #J33815-1 OR EQUIVALENT IS NOT USED FOR REINSTALLING MIXTURE CONTROL SOLENOID, IT WILL BE
NECESSARY TO RECORD NUMBER OF TURNS WHEN REMOVING ADJUSTING (LEAN STOP) SCREW.
6.
Remove float.
7.
Remove primary metering jet assemblies.
REASSEMBLY
1.
Install new primary metering jet assemblies.
2.
Install float and adjust if necessary. The specification for float level is 11/32".
3.
Install mixture control solenoid using tool, #J33815-1 or equivalent or by setting adjusting (lean stop) screw to the same number of turns recorded
in step #5 of Disassembly.
