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Poorly N52
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
Poorly N52
So, had a Coupe at mine again yesterday. This one was a bit poorly, and sounding like a diesel.
Diagnosis needed in order to ascertain how to proceed..
Can cover removed to examine the state of the valve train, couple of minor marks to two inlet can lobes, which look like they've been caused by debris rather than metal to metal contact, rest of them looked commensurate with the 80k miles.
Now for the messy part, starting it up with cam cover removed.. I forgot just how much oil a timing chain throws off lol..
Anyway, noise coming from cyl 5&6 inlet. Put back together and cleaned up, will be fitting new hydraulic lifters in a few weeks, which looks like a ball ache of a job with a 5 and a half hr book time...
First one I've heard like this, does anyone know if it's common?
Mike
Diagnosis needed in order to ascertain how to proceed..
Can cover removed to examine the state of the valve train, couple of minor marks to two inlet can lobes, which look like they've been caused by debris rather than metal to metal contact, rest of them looked commensurate with the 80k miles.
Now for the messy part, starting it up with cam cover removed.. I forgot just how much oil a timing chain throws off lol..
Anyway, noise coming from cyl 5&6 inlet. Put back together and cleaned up, will be fitting new hydraulic lifters in a few weeks, which looks like a ball ache of a job with a 5 and a half hr book time...
First one I've heard like this, does anyone know if it's common?
Mike
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
Poorly N52
Apparently it's quite common..
BMW's answer to it looks like a fob off though..
http://www.quirkyuncle.com/2013/04/12/d ... fter-tick/
Mike
BMW's answer to it looks like a fob off though..
http://www.quirkyuncle.com/2013/04/12/d ... fter-tick/
Mike
- Smartbear
- Lifer
- Posts: 13685
- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
Poorly N52
Usually caused by to many short journeys & oil change intervals to far apart, ccv gets clogged with those conditions as well
Rob
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
Poorly N52
Sad thing is this is my best mates, car was sold as private by a trader. He even answered the phone as such and such cars. Dickhead.
Oh well karmas a bitch!
I kick myself all the time for not noticing it on the test drive.
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
- Smartbear
- Lifer
- Posts: 13685
- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
Poorly N52
Sometimes fresh oil & a decent length run can quieten them right down again, has he given that a go?
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
Poorly N52
Yeah Rob as soon as we got it put a fresh lot of Millers 5 30 in. Then some Wynns lifter treatment when that didn't workSmartbear wrote: ↑Sun Sep 10, 2017 4:39 pmSometimes fresh oil & a decent length run can quieten them right down again, has he given that a go?
Rob
Just lucky Mike knows his s**t
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
- srhutch
- Moderator
- Posts: 26959
- Joined: Tue Jun 19, 2007 1:22 pm
- Location: East Sussex, UK
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Poorly N52
Would have to disagree with the first part. It's caused because BMW designed it wrong and the oil drains back out of the lifters. I used mine daily for 50 mile round trip and had the issue virtually from new.
viewtopic.php?f=3&t=10937
- Smartbear
- Lifer
- Posts: 13685
- Joined: Wed Feb 05, 2014 6:54 pm
- Location: a barn in Somerset
Poorly N52
Maybe if I changed my opening words to "maybe caused" instead of "usually caused" it would be more accuratesrhutch wrote: ↑Sun Sep 10, 2017 7:34 pmWould have to disagree with the first part. It's caused because BMW designed it wrong and the oil drains back out of the lifters. I used mine daily for 50 mile round trip and had the issue virtually from new.
viewtopic.php?f=3&t=10937
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
Poorly N52
Yup, BMW's resolution is 3 stage.srhutch wrote: ↑Sun Sep 10, 2017 7:34 pmWould have to disagree with the first part. It's caused because BMW designed it wrong and the oil drains back out of the lifters. I used mine daily for 50 mile round trip and had the issue virtually from new.
viewtopic.php?f=3&t=10937
First, perform the bleed cycle and see if the customer is happy..
If not, replace the lifters and see if that cures it.
Final stage is a redesigned cylinder head..
Mike
- srhutch
- Moderator
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- Contact:
Poorly N52
Nope.Ducklakeview wrote: ↑Sun Sep 10, 2017 8:12 pmYup, BMW's resolution is 3 stage.srhutch wrote: ↑Sun Sep 10, 2017 7:34 pmWould have to disagree with the first part. It's caused because BMW designed it wrong and the oil drains back out of the lifters. I used mine daily for 50 mile round trip and had the issue virtually from new.
viewtopic.php?f=3&t=10937
First, perform the bleed cycle and see if the customer is happy..
If not, replace the lifters and see if that cures it.
Final stage is a redesigned cylinder head..
Mike
Back in 2009 they did the bleed which didn't work so chsnged the head.
Shortly afterwards they stopped changing the heads and just replaced lifters with limited results.
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
Poorly N52
Anything to save a few ££, good old BMW ;(srhutch wrote: ↑Sun Sep 10, 2017 8:39 pmNope.Ducklakeview wrote: ↑Sun Sep 10, 2017 8:12 pmYup, BMW's resolution is 3 stage.srhutch wrote: ↑Sun Sep 10, 2017 7:34 pm
Would have to disagree with the first part. It's caused because BMW designed it wrong and the oil drains back out of the lifters. I used mine daily for 50 mile round trip and had the issue virtually from new.
viewtopic.php?f=3&t=10937
First, perform the bleed cycle and see if the customer is happy..
If not, replace the lifters and see if that cures it.
Final stage is a redesigned cylinder head..
Mike
Back in 2009 they did the bleed which didn't work so chsnged the head.
Shortly afterwards they stopped changing the heads and just replaced lifters with limited results.
Mike