Engine - Whistle Noise From The Water Pump Area

SI M 11 03 09
Engine

December 2009
Technical Service

This Service Information bulletin supersedes SI M11 03 09 dated December 2009.

[NEW] designates changes to this revision

SUBJECT
Whistling Noise from the Water Pump Area

MODEL
R55, R56, R57 produced up to June 2009

SITUATION

A whistling or squealing noise is heard from the engine at idle and/or at higher engine speeds.

CAUSE

1. Noise is caused by the water pump.

2. Noise is caused by the friction wheel of the belt tensioner.

PROCEDURE

1. Run the engine up to the operating temperature. Confirm that the noise is coming from the area around the water pump during engine idle speed.

2. Increase the engine speed up to 1,000 rpm.

3. If a noise disappears at 1,000 rpm or higher, replace the water pump.

4. If a noise is still present at 1,000 rpm or higher, replace the friction wheel of the belt tensioner with the improved part, P/N 11 28 7 571 833. Refer to Repair Instruction RA11 28 035.





PARTS INFORMATION








WARRANTY INFORMATION
Covered under the terms of the MINI New Vehicle Limited Warranty.