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





See the flowchart