BMW 3-Series (E90 E92) Forum - View Single Post - Metallic Ticking noise coming from engine?

AndyD52 · 10-20-2009, 10:19 PM

The ticking noise is a known problem with the N52 (3.0L) engine fitted to e90 series vehicle. I have the problem with my 3 series wagon which now has 68K miles. I only get the problem if I travel short journey's, most of my driving is 30 mile min. so I don't here the noise very often. The real fix is to change the cylinder head, my dealer said because I reported it during the warranty period they would repair it if the SB fix does not work, so far it does.

This Service Information bulletin supersedes SI 11 09 07 dated April 2008.

designates changes to this revision

SUBJECT
Intermittent Hydraulic Valve Adjuster (HVA): "Ticking" or "Rattling" Noises

MODEL
All E82, E83, E85, E86, E88, E60, E61, E70, E90, E91, E92, and E93 with the N51, N52 or N52K engines

SITUATION
An occasional ticking or rattling noise from the HVA elements may occur during cold engine starts or frequent short-distance driving.

CAUSE
In these situations, the HVA elements may not yet have been supplied with sufficient amounts of air-free oil. This condition will not cause any damage to the engine, and usually remedies itself with a longer driving distance or operating times at full operating temperature.

CORRECTION
In the event of a customer complaint, please perform the following the HVA bleeding procedure.

PROCEDURE
Important notes:

The bleed time may take anywhere from between two minutes and (in rare cases) to a maximum of 30 minutes. This procedure is to be performed on a level surface with the vehicle stationary, and in a properly ventilated area.

Procedure preconditions:

Engine oil level correct – neither underfilled nor overfilled

Engine running at operating temperature

Bring the engine up to an operating speed (no load) of 2000-3000 rpm and maintain this condition for three minutes (bleeding procedure).

Let the engine idle for 15-30 seconds and reevaluate whether the noise is still present or not.

Engine quiet – procedure is finished.

Engine noise is still present – repeat the procedure; perform steps #1 and #2 up to a maximum of 5 times.

Only if the noise remains after performing the bleeding procedure 5 times: proceed by performing the procedure for a final time, also at an engine operating speed of 2000-3000 rpm, but for a total time duration of 15 minutes.

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

10-20-2009, 10:19 PM	#1088
AndyD52 Registered 0 Rep 3 Posts Drives: BMW 328xiT (e91) Join Date: Oct 2009 Location: Dublin,OH iTrader: (0)	Ticking Noise SBSI B 11 09 07 -N52 Engine HVA System The ticking noise is a known problem with the N52 (3.0L) engine fitted to e90 series vehicle. I have the problem with my 3 series wagon which now has 68K miles. I only get the problem if I travel short journey's, most of my driving is 30 mile min. so I don't here the noise very often. The real fix is to change the cylinder head, my dealer said because I reported it during the warranty period they would repair it if the SB fix does not work, so far it does. This Service Information bulletin supersedes SI 11 09 07 dated April 2008. designates changes to this revision SUBJECT Intermittent Hydraulic Valve Adjuster (HVA): "Ticking" or "Rattling" Noises MODEL All E82, E83, E85, E86, E88, E60, E61, E70, E90, E91, E92, and E93 with the N51, N52 or N52K engines SITUATION An occasional ticking or rattling noise from the HVA elements may occur during cold engine starts or frequent short-distance driving. CAUSE In these situations, the HVA elements may not yet have been supplied with sufficient amounts of air-free oil. This condition will not cause any damage to the engine, and usually remedies itself with a longer driving distance or operating times at full operating temperature. CORRECTION In the event of a customer complaint, please perform the following the HVA bleeding procedure. PROCEDURE Important notes: The bleed time may take anywhere from between two minutes and (in rare cases) to a maximum of 30 minutes. This procedure is to be performed on a level surface with the vehicle stationary, and in a properly ventilated area. Procedure preconditions: Engine oil level correct – neither underfilled nor overfilled Engine running at operating temperature Bring the engine up to an operating speed (no load) of 2000-3000 rpm and maintain this condition for three minutes (bleeding procedure). Let the engine idle for 15-30 seconds and reevaluate whether the noise is still present or not. Engine quiet – procedure is finished. Engine noise is still present – repeat the procedure; perform steps #1 and #2 up to a maximum of 5 times. Only if the noise remains after performing the bleeding procedure 5 times: proceed by performing the procedure for a final time, also at an engine operating speed of 2000-3000 rpm, but for a total time duration of 15 minutes. WARRANTY INFORMATION Covered under the terms of the BMW New Vehicle Limited Warranty.
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