Ti, 1001 Complaint - Engine Knock During Acceleration: Checking Engine For Carbon Deposits (17/18): Tools

WARNING: This page is about a different variant/trim than selected.

Tool denomination	Type	Tool number	Image
Cleaning unit	Vehicle-specific workshop equipment	> VAS 294 011	Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Model year

From 2010

Revision:

This bulletin replaces bulletin Group 1, #17/18, dated February 13, 2018.

Under Invoicing, Damage Type "3015 - Dirty" was changed to "1117 - Misfiring, Jerking

Model Line:

Cayenne (92A)

Panamera (970/971)

Macan (95B)

Subject:

Intake valves and intake ports

Information:

Carboned-up valves in the engine can be reworked and cleaned using cleaning equipment.

If there is a complaint about knocking combustion , e.g. during acceleration at high load, the condition of the intake valves and ports must be checked before doing any other work.

If the check shows that the intake valves and intake ports have carbon deposits and are dirty, they must be cleaned using the > VAS 294 011 - Cleaning unit.

There should be no need to replace the components.

Date of Introduction:

The > VAS 294 011 - Cleaning unit can be ordered immediately for dealers.

Remedial Action:

The > VAS 294 011 - Cleaning unit is used for cleaning carboned-up intake valves and intake ports.

Compressed air is used to spray a special granulate mixture into the intake port, where it loosens and removes carbon build-up.

The dirty granulate is extracted during spraying using an industrial vacuum cleaner.

Instructions for use can be found in the operating instructions of the cleaning unit:

Access the intake valves and ports via the intake-air distributor.
When working on the intake valves and ports using the cleaning unit, make sure that the intake valves into the respective combustion chamber are closed => ignition TDC.

Tools:

> VAS 294 011 - Cleaning unit (This is a recommended tool for dealerships to purchase, but can also be rented.)

Invoicing:

For invoicing and documentation using PQIS, enter the following coding:

Location key (FES5)	10010	Engine
Damage code (SA4)	1117	Misfiring, jerking