Cutlass Ciera Cruiser V6-3300 3.3L (1989)
Fuel Supply Line: Customer Interest
Fuel Line - Knock/Rattle After a Cold Start
NUMBER:
90-T-197
CORP.REF.NO: 006506
DATE:
March 1991
SECTION:
6E3
SUBJECT:
FUEL LINE KNOCK/RATTLE NEW FUEL PRESSURE REGULATOR
MODELS/YEARS: 1989-90 CUTLASS CALAIS AND CUTLASS CIERA WITH
3300 (VIN N) ENGINE
Some 1989-90 Cutlass Ciera and Cutlass Calais models equipped with the 3300 (VIN N) engine may exhibit a light knock/rattle type noise, audible after
a cold start at ambient temperatures below 400 Fahrenheit.
The noise may be audible either in or outside of the vehicle from start-up until the engine is up to normal operating temperatures.
This condition is caused by fuel system pulsations generated by fuel injector operation causing a hydraulic hammering in the chassis fuel pipes.
Vehicles exhibiting this condition may be repaired by installing a new design fuel pressure regulator, Part Number 17112611. The new Fuel Pressure
Regulator has a reduced seat orifice and the orifice chamfer has been removed.
IMPORTANT:
THE NEW FUEL PRESSURE REGULATOR, PART NUMBER 17112611 WILL ALSO BE THE NEW SERVICE
REPLACEMENT REGULATOR FOR THE 1989-90 3300 (VIN N), ENGINE REPLACING PART NUMBER 17112117.
Parts are currently available from GMSPO.
