Spark Plugs - Install With Threads Clean and Dry

91porsche01

June 14, 1991



Model Group

All 2

Part Identifier Number

2870 9102


Subject:
Spark Plug Thread Lubrication


ATTENTION: Service manager/Service Technician

This bulletin supercedes Technical Bulletin Group 28, Number 78-03, Book A, page 297.

Models Affected: All





Concern: Spark plug thread lubrication.

Service Information: The Carrera 2/4 Workshop Manual Vol. 1, page 03-11, in the section on replacing spark plugs states "Do not use any lubricant on the (spark) plug threads."

This procedure now applies retroactively to all Porsche models. All spark plugs should be installed with the threads clean and dry.

The torque specification is unchanged: 25-30 N-m (19-22 ft.lb.).