Clean injector valves:

WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.

Install injector valves in special tool 13 6 205.

Connect special tool 13 6 206 to injector valves and to a 12 V car battery.

Fig 1: Installing Injector Valves In Special Tool 13 6 205 And Connecting Special Tool 13 6 206 To Injector Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Using ultrasonic cleaning unit 13 6 200 to clean injector valves.

Fig 2: Using Ultrasonic Cleaning Unit 13 6 200

Courtesy of BMW OF NORTH AMERICA, INC.

Read operating instructions before operating ultrasonic cleaning unit.

Attach injector valves to special tool 13 6 200 with special tool 13 6 205.

Fill special tool 13 6 200 with cleaning concentrate 13 6 207 as specified by manufacturer.

Perform cleaning procedure as specified by manufacturer.

Repeat leak test on cleaned injector valves.

CAUTION: Do not carry out leak test in cleaning concentrate but rather in a water bath.

Only replace injector valves from which volume of air emerging exceeds the permitted limit of 2 bubbles within a 15 second period.

CAUTION: Install cleaned injector valves immediately in engine and run engine.

This flushes out any remaining cleaning concentrate thereby preventing injector valve corrosion.

Due to the risk of corrosion, cleaned injector valves can no longer be stored.