Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)
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Spark Plug: Customer Interest
Rough Idle (Platinum Spark Plug Cleaning Procedure)
Models: All models
Section: Engine Fuel & Emission
Classification: EF&EC94-002
Bulletin No.: IBT94-000
Date: February 8, 1994
ROUGH IDLE
(PLATINUM SPARK PLUG CLEANING PROCEDURE)
APPLIED MODELS:
All Q45 models
All J3O models
SERVICE INFORMATION
Some mentioned vehicles may exhibit a rough idle and/or rough running condition caused by fouled spark plugs. This condition is usually identified
during Pre-Delivery inspection (PDI) or within the first few months of service.
The diagnostic chart will assist in the evaluation of rough idle/rough running conditions and, additionally, will provide criteria for platinum spark plug
cleaning or replacement.
SERVICE PROCEDURE
