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Timing chain issue ?

Discuss problems you have had or are having with your Z4
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Mr Tidy
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Timing chain issue ?

Post by Mr Tidy » Fri Sep 22, 2017 10:07 pm

This thread has just reminded me that Z4 owners seem to be a cut above average! :lol:

Fair play to jnwright71 and Cooky3 - both real gents.

I hope the issue can be diagnosed and sorted relatively painlessly. :thumbsup:
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
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ph001
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Timing chain issue ?

Post by ph001 » Fri Sep 22, 2017 10:14 pm

Cooky3 wrote: Fri Sep 22, 2017 8:59 pm Cheers all for the support here. Life's too short and all that.

Hi PH001. To answer your question. Not really like the second rattle. From cold the engine sounds totally normal. Even when the engine initially reaches operating temperature there is only a slight hint of the noise when the revs rise. But when properly warmed, gauge still in the middle of course, there is no noise at idle, but a hideous one when you apply the revs, say from 2000-2500?

How can that be? Not sure how to post the vid but will have a look.

I bought a six cylinder engine for the sound. But this noise is somewhat spoiling my early love affair... :headbang:
I can't help thinking its just something simply resonating at a certain rpm like a heatshield or something?? The N52 is a reliable lump, I can't see it being anything major. It could be worthwhile getting under the car with the undertray off while someone sits in and revs it.

All you need to do on Youtube is sign in and you will then see an upload video option.
2007 E85 Z4 3.0Si manual :driving:
19" CSL's | Eibach Springs | Aeroskirts | Z4M front bumper | Clear brake light | ZHP | RCH+| Stubby

2004 E46 M3 coupe manual - gone but not forgotten.

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Timing chain issue ?

Post by Cooky3 » Fri Sep 22, 2017 10:42 pm

I have just found this on YouTube. The same issue I have it seems and possibly an oil filter problem. Really?

https://youtu.be/KXbAg90G7tY

Tried posting my vid - just need to find it now :cry:
I ain't fallin for no banana in my tail-pipe!
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hopz121
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Timing chain issue ?

Post by hopz121 » Fri Sep 22, 2017 10:46 pm

Cooky3 wrote: Fri Sep 22, 2017 10:42 pm I have just found this on YouTube. The same issue I have it seems and possibly an oil filter problem. Really?

https://youtu.be/KXbAg90G7tY

Tried posting my vid - just need to find it now :cry:
Worth putting in a new OEM filter, its cheap place to start and could be a cheap fix :)
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2017 BMW F31 318d M-Sport - Auto - Glacier Silver
2007 Porsche Cayman 2.7 - Manual - Arctic Silver
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Timing chain issue ?

Post by Cooky3 » Fri Sep 22, 2017 10:47 pm

And this link is the video of my car noise...

https://youtu.be/cgtHUhGcmIU

Same thing I believe... Can it really be an oil filter...?
I ain't fallin for no banana in my tail-pipe!
Jester's dead!

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hopz121
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Timing chain issue ?

Post by hopz121 » Fri Sep 22, 2017 10:51 pm

Cooky3 wrote: Fri Sep 22, 2017 10:47 pm And this link is the video of my car noise...

https://youtu.be/cgtHUhGcmIU

Same thing I believe... Can it really be an oil filter...?
One way to find out. :)
2004 BMW E46 M3 Coupe - Manual - Silver Grey
2017 BMW F31 318d M-Sport - Auto - Glacier Silver
2007 Porsche Cayman 2.7 - Manual - Arctic Silver
2003 Renault Clio 172 Cup - Blue
2003 BMW E85 Z4 3.0i - Gone
2008 BMW E90 330i SE - Gone

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Timing chain issue ?

Post by Cooky3 » Fri Sep 22, 2017 11:00 pm

Fingers crossed hopz... :D
I ain't fallin for no banana in my tail-pipe!
Jester's dead!

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Mr Tidy
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Timing chain issue ?

Post by Mr Tidy » Fri Sep 22, 2017 11:11 pm

Cooky3 wrote: Fri Sep 22, 2017 11:00 pmFingers crossed hopz...
I hope that is the answer! :thumbsup:
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black

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Timing chain issue ?

Post by jnwright71 » Sat Sep 23, 2017 12:26 am

Hi All,

The Z is now back at mine as Justin is away and will get a new filter in the morning and a full check over to ensure this isn't a heat shield or exhaust issue (have access to a 4 post lift - :thumbsup: ).

Fingers crossed...

Cheers, James
2006 Z4 2.5si roadster - Silvergrey, oregon peal grey leather, cruise, BT

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Timing chain issue ?

Post by jnwright71 » Sat Sep 23, 2017 10:47 am

Z4M-2006,

Video clip sent by WeTransfer. Your thoughts would be really appreciated.

Thx, James
2006 Z4 2.5si roadster - Silvergrey, oregon peal grey leather, cruise, BT

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Timing chain issue ?

Post by Z4M-2006 » Sat Sep 23, 2017 1:06 pm

Hmmm

That's an odd noise..

Given the position that you have taken that from my firsts thoughts would be the DISA
VALVE ...

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Timing chain issue ?

Post by ph001 » Sat Sep 23, 2017 7:51 pm

Yeh, strange for sure. I just can't imagine how an oil filter would make that noise???. Here's what to do, get a 1m length of hose pipe, hold one end to your ear and put the other end to the various components around the engine. The loudest one should identify the culprit.
2007 E85 Z4 3.0Si manual :driving:
19" CSL's | Eibach Springs | Aeroskirts | Z4M front bumper | Clear brake light | ZHP | RCH+| Stubby

2004 E46 M3 coupe manual - gone but not forgotten.

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Timing chain issue ?

Post by Cooky3 » Sat Sep 23, 2017 8:59 pm

Well, James has changed the filter with an oem item and refreshed the oil and in short, it's made no difference :headbang: and also checked the top and bottom DISA valves which are both fine :headbang: so probably time to give up! James has gone out of his way to help me with this post sale and exceeded any reasonable expectations. Gonna have to take it on the chin and book it into a specialist for an expert diagnosis.

I just can't understand why it runs normally until fully warmed up, at which point the noise appears but performance is unaffected it seems. Any ideas? :poke:

Will keep members posted on here - the saga continues....
I ain't fallin for no banana in my tail-pipe!
Jester's dead!

jnwright71
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Timing chain issue ?

Post by jnwright71 » Sat Sep 23, 2017 9:16 pm

As Justin has posted, oil and filter changed - no change. Top and lower DISA valves removed and checked, both perfect (getting to that lower DISA is a right royal pain in the a**e).

In my opinion, I think this can be limited to a component that is rotational in nature, so potentially alternator bearings, idler gear, belt tensioner or something in the chain drive. All I did confirm today is that the noise starts at just above tickover and disappears at about 1300 rpm.

Time to get the car nice and warm so the noise is there, then remove the serpentine belt to see if the noise disappears.

Amy more thoughts or offers of help welcome. It's set to be sunny tomorrow, so you could always drop the roof (those with proper Z4's :rofl: ) and head to Peterborough to take a listen :D :D

Thx, James
2006 Z4 2.5si roadster - Silvergrey, oregon peal grey leather, cruise, BT

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maxman
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Timing chain issue ?

Post by maxman » Sat Sep 23, 2017 9:46 pm

Are all the bolts on the Alternator tight.Can you place the sound to an exact area by putting your ear to a long screwdriver and moving it about.Could you run engine with the serpintine belt off for a few seconds to try and eliminate certain parts.
Without being there to listen i know its all guess work.

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