TAIL PIPE SMOKE ON START-UP (INSTALL NEW VALVE SEAL KIT)

SUBJECT: TAIL PIPE SMOKE ON START UP

MODELS AFFECTED: 1990 BROUGHAMS WITH 5.7L; 1991 BROUGHAMS

Some 1990 Broughams with 5.7L and 1991 Broughams may exhibit a puff of tail pipe smoke on start up. The smoke may be blue or bluish white in color. The smoke may be caused by oil that seeps into the cylinders during an extended soak period.

If the smoke is blue or bluish white and occurs only at start up, install valve seal kit P/N 12511890. This kit incorporates an umbrella seal for the exhaust valve stem and should be installed. Refer to Section 6A4 of the applicable Service Information Manual for assembly procedure.

Parts are currently available from GMSPO.

WARRANTY INFORMATION VEHICLE SERIES Operation Operation D Number C D E J K V ----------------------------------------------------------------------- Spring, Cap and/or Seal, Valve Both Banks - Replace J0547 1.8

Part Group:

Policy:

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.