DeVille V8-4.6L VIN 9 (1995)
Fuel Pressure Release: Technical Service Bulletins
Engine - Popping Noise During Cranking
File in Section: 6 - Engine
Bulletin No.: 57-60-02
Date: August, 1995
Subject:
Normal 4.6L Northstar and 4.0L Engine Cranking Time/Bump Start/F.I.S. (Fluid Induction System/intake Manifold) Pressure Relief Noise
Models:
1995-96 Cadillac Concours, Eldorado, Seville
with 4.6L Northstar Engine (VINs 9, Y - RPOs L37, LD8)
1995-96 Oldsmobile Aurora
with 4.0L Engine (VIN C - RPO L47)
Some owners may comment on a pop noise during cranking before the engine starts. The customer should be made aware that if the engine doesn't start
while cranking and the key is released (turned back from the start position/or bump started) within 2 seconds, pressure relief from the F.I.S. (Fluid
Induction System/Intake Manifold) may occur and is considered normal.
It the cranking time exceeds two seconds and the engine does not start, this extended cranking may be caused by a fuel system leakdown condition. Refer
to bulletin 476307 for additional information and diagnosis.
