HARD/NO START HOT FUEL STARVATION AT HIGH ALTITUDES

HOT FUEL STARVATION AT ALTITUDE (ABOVE 4000 FT.) ELEVATION

Model and Year: 1982-85 CELEBRITY AND CITATION WITH 2.8L V6 ENGINE, (VIN CODE X) LE2

TO: ALL CHEVROLET DEALERS

In high altitude areas with high ambient temperatures, some Celebrities and Citations may experience a no start condition after a short soak (10-45 minutes). Other vehicles may start and then stop running immediately thereafter. These vehicles will not restart until the engine has cooled down. This condition may be caused by fuel starvation (vapor lock) and can be corrected by installing Electric Fuel Pump Kit, P/N 14094438. This kit utilizes a low pressure (3 psi) electric in-tank pump.

Included with the kit are detailed instruction sheets for installing all parts found in the kit. In addition to installing the kit, the float level in the carburetor should be adjusted to compensate for the change in fuel pressure caused by the addition of the in-tank electric pump. Use procedures found in Section 6C3 of the shop manual to adjust the float levels. Float levels for 1983, 1984, and 1985 vehicles should be reset to 1/4 inch (6.5mm). Float levels for 1982 vehicles should be reset to 3/8 inch (9.5mm).

Labor Operation No: T1137

Labor Time : 2.5 hours

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.