For 1990-2009 cars

# HARD START,SURGE/HESITATION HOT FUEL HANDLING PROCEDURE

#### VEHICLES AFFECTED: 1983-85 'F' Car With L69 Engines (Engine Code G) and 1983 - Early '86 'F' Cars With LG4 Engines (Engine Code H)

Customer comments of vehicle surge, hesitation, and/or stumbles after the vehicle has reached operating temperature, then parked and restarted, (Hot Soak) may be received. This condition is caused by a large temperature difference between the carburetor fuel bowl and the fuel delivered from the fuel tank. This condition can be eliminated by the installation of an auxiliary blower fan, which reduces the temperature of the fuel bowl during a hot soak. The fan is designed to operate at an engine coolant temperature of 106 DEG C (220 DEG F) and stay operational until the coolant reaches 90 DEG C (195 DEG F). This will maintain a fuel bowl temperature of approximately 74 DEG C (165 DEG F).

Listed below are Hot Fuel Handling service kit part numbers:

P/N Usage --- ----- 14094394 Chevrolet 'F' Cars

14094395 Pontiac 'F' Cars

NOTICE TO DEALER: In each kit there is a one page flyer explaining the blower kit operation. Please insure that the customer receives this flyer.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.