Complaint - Engine Knock During Acceleration: Checking Engine For Carbon Deposits (17/18) (All Models Except MACAN Edition): Tools

Designation	Type	Number	Description
cleaning unit	Workshop equipment	WE 1833

Model year: 

as of 2010 

Model Line: 

Cayenne (92A) 

Panamera (970/971) 

Macan 

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 cleaning unit WE 1833  .

There should be no need to replace the components.

Date of Introduction: 

The cleaning unit WE 1833  can be ordered immediately for dealers.

Remedial Action: 

The cleaning unit WE 1833  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: 

Cleaning unit WE 1833  (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:

	10010	Engine
	3015	dirty