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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > N52 problem



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      06-07-2013, 09:50 PM   #1
Ansonlai
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N52 problem

http://www.rtsauto.com/bmw-e90-valve...ter-ticknoise/

According the web site:
"............SITUATION
An occasional ticking or rattling noise from the camshaft hydraulic valve lifters (HVA) may occur during cold engine starts, due to frequent short-distance driving, or the noise may occur for an extended period of time even though the engine is at operating temperature.
Improved parts were phased into production beginning on 10/1/2008 and fully implemented on November 31st 2008.
CORRECTION
Do not perform the bleeding procedure that was previously provided in SI B11 09 07 which has now been deleted.
All vehicles produced between 10/1/2008 and 11/31/2008 must have each vehicle’s cylinder head casting number identified before hydraulic valve lifters (HVA) replacement, due to staggered implementation. Refer to the attachment for the casting number location. Vehicles produced after 11/31/2008 have already been fitted with improved parts. Vehicles produced prior to 10/1/2008 will require the new parts.
Improved Casting Numbers
N51 (B30)
7588277.01
N52 (B30)
7588273.01

N52K (B30)
7588271.01
A cylinder head casting number that does not match will require replacement of the 12 exhaust camshaft hydraulic valve lifters (HVA) as per Repair Instruction RA 11 33 050, Removing and installing/replacing all rocker arms. Only the exhaust camshaft and rocker arms have to be removed in order to replace the hydraulic valve lifters. Do not remove or replace any intake camshaft valve train components........."

May I ask how can I find out the vehicle’s cylinder head casting number?
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      06-07-2013, 11:26 PM   #2
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You can find out by going to Ali's Sick Cylinder Specialists who have a branch in Perth. They can also inform you to not make a thread about every question you have as well. Cheers, Hectic.
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      06-07-2013, 11:41 PM   #3
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Quote:
Originally Posted by HecticX5 View Post
You can find out by going to Ali's Sick Cylinder Specialists who have a branch in Perth. They can also inform you to not make a thread about every question you have as well. Cheers, Hectic.
Thank you.
But there is nothing when I search "Ali's Sick Cylinder Specialists" on the Internet, may I ask if you have some contact details for that?

And if they charge me against the way to find out the head casting number?
I thought there might be someone here who knows how to identify that number, and that's why I came up with this thread, moreover, I found that web site with the video is good, so that we have an example of that "sound" to be heard in case there is someone stupid like me want to know how to diagnose, that's why I open a thread.
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      06-07-2013, 11:43 PM   #4
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Shame, they might have shut down...Poor Ali.
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      06-08-2013, 01:37 AM   #5
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Here's my view. All the 325i engines have some ticking sounds, even the ones produced 2009 and later (such as my E90 325i). I haven't really enjoyed driving the 325i auto transmission cars I borrowed from the dealer as loan cars. I don't think the engine works very well with the Auto and it is slow. I only like manual transmission with the 2.5L non-turbo engine. Though if performance isn't a priority, you might still enjoy a 325i.

I would rather look for 335i 3.0L N54 turbo engine. I think it is more durable engine as it has iron cylinder liners and tend not to have so many issues with Valvetronic and hydraulic lifter issues. You will still need to budget for repairs for fuel pump maybe replace turbos etc. Honestly I don't think any BMW will be cheap to maintain in the long term. That is why you pay more for cars that have done less km - Even more important is service history. Auto transmission problems can cost a lot of $$$, but I suppose that's no secret.
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      06-08-2013, 01:48 AM   #6
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Quote:
Originally Posted by John_01 View Post
Here's my view. All the 325i engines have some ticking sounds, even the ones produced 2009 and later (such as my E90 325i). I haven't really enjoyed driving the 325i auto transmission cars I borrowed from the dealer as loan cars. I don't think the engine works very well with the Auto and it is slow. I only like manual transmission with the 2.5L non-turbo engine. Though if performance isn't a priority, you might still enjoy a 325i.

I would rather look for 335i 3.0L N54 turbo engine. I think it is more durable engine as it has iron cylinder liners and tend not to have so many issues with Valvetronic and hydraulic lifter issues. You will still need to budget for repairs for fuel pump maybe replace turbos etc. Honestly I don't think any BMW will be cheap to maintain in the long term. That is why you pay more for cars that have done less km - Even more important is service history. Auto transmission problems can cost a lot of $$$, but I suppose that's no secret.
That's John

Yeah, I found the ticking sound elsewhere in other brand's car too. And I assume that it is ok as long as the ticking sound is not affecting the performance or induce a serious damage to the engine.

For the 325i, I have tested drive some recently, I found that when you throttle it, you have to press quite down to get the car moving from stationery, which to my feeling is - not responsive at all?
Or does all the BMW cars are the same that you have to press the throttle a bit more? (This is the first time I drive a BMW and I didn't find any other brands like mercedes or VW's throttle has the same problem, maybe it is the characteristic of BMW's throttle?

Hmm, some 335i coupe are also under my consideration now, and just seeking for opinion from the other members
http://www.e90post.com/forums/showthread.php?t=850250

Thanks John
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      06-08-2013, 02:09 AM   #7
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Quote:
Originally Posted by Ansonlai View Post
For the 325i, I have tested drive some recently, I found that when you throttle it, you have to press quite down to get the car moving from stationery, which to my feeling is - not responsive at all?
Or does all the BMW cars are the same that you have to press the throttle a bit more? (This is the first time I drive a BMW and I didn't find any other brands like mercedes or VW's throttle has the same problem, maybe it is the characteristic of BMW's throttle?
I think that's true. The throttle response of many European cars is like that. Recently the latest BMW models start to change to make the throttle more sensitive, but not necessarily better. In my opinion the biggest issue with the 325i with Auto transmission is a lack of real bottom end torque. BMW claim their engines have good torque from 1500rpm upwards, but to me they still seem gutless at typically low RPM in normal driving conditions. That is compared to 3.5L or larger engine you find in an Australian made car.
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      06-08-2013, 02:23 AM   #8
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Quote:
Originally Posted by John_01 View Post
I think that's true. The throttle response of many European cars is like that. Recently the latest BMW models start to change to make the throttle more sensitive, but not necessarily better. In my opinion the biggest issue with the 325i with Auto transmission is a lack of real bottom end torque. BMW claim their engines have good torque from 1500rpm upwards, but to me they still seem gutless at typically low RPM in normal driving conditions. That is compared to 3.5L or larger engine you find in an Australian made car.
BMW may worry about the more sensitive of the throttle, the easier to have your car back spins? So, the very first touch to the throttle pedal, there isn't any response at all?
I am wondering if the 335i is the same, as I am not too used to this kind of throttle, finding a bit hard to control as I have to put my feet down further to get the car moved.

But I think the torque for 325i coupe should be enough? It claims to have 250nm 2750-4000RPM, I mean, it's more than those Japanese medium sedan already.
If someone after more power, I guess he would go 335i or M3 as I think 325i coupe is kind of lifestyle oriented? Good for daily normal drive but not in term of performance?

But does anyone have experienced inadequate power to overtake or change lane with the N52 engine that 325i coupe has?
I guess it would at least better than cars like Camry, Accord Euro, C200, 320i, etc in the same situation?

Last edited by Ansonlai; 06-08-2013 at 03:09 AM.
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      06-08-2013, 02:29 AM   #9
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Quote:
Originally Posted by Ansonlai View Post
BMW may worry about the more sensitive of the throttle, the easier to have your car back spins? So, the very first touch to the throttle pedal, there isn't any response at all?
I am wondering if the 335i is the same, as I am not too used to this kind of throttle, finding a bit hard to control as I have to put my feet down further to get the car moved.
I wouldn't worry about the throttle feel, because you will get used to it soon enough... Then you will probably wonder why other manufacturers make it so sensitive.

Quote:
Originally Posted by Ansonlai View Post
But I think the torque for 325i coupe should be enough? It claims to have 250nm 2750-4000RPM, I mean, it's more than those Japanese medium sedan already.
If someone after more power, I guess he would go 335i or M3 as I think 325i coupe is kind of lifestyle oriented? Good for daily normal drive but not in term of performance?
I would say its fine for normal driving. Once the auto box downshifts you can move along well enough.

Last edited by John_01; 06-08-2013 at 02:38 AM.
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      06-08-2013, 03:09 AM   #10
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Quote:
Originally Posted by John_01 View Post
I wouldn't worry about the throttle feel, because you will get used to it soon enough... Then you will probably wonder why other manufacturers make it so sensitive.


I would say its fine for normal driving. Once the auto box downshifts you can move along well enough.
As this is my first time in RWD, I am thinking if I have to get a less power 325i than a 335i, afraid of losing control with a higher power, or the DSC in BMW is well enough to prevent that if I am not very aggressive driver.
Ppl said 325i is so heavy that the N52 is not capable to move it forward with a decent speed from stationery.
I think I might have to test drive a 335i before I can make up my mind.
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      06-08-2013, 03:15 AM   #11
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Quote:
Originally Posted by John_01 View Post
I wouldn't worry about the throttle feel, because you will get used to it soon enough... Then you will probably wonder why other manufacturers make it so sensitive.


I would say its fine for normal driving. Once the auto box downshifts you can move along well enough.
So, the ticking noise will not damage any part of the engine?
I thought the piston or the valve will get damaged as it claims that the noise is created as a result of the poor design for lubraniant to run through it or something like the inadequate space to give a suitable working conidition for the valve?
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      06-08-2013, 06:41 AM   #12
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regarding the ticking noise - yes I would be concerned if it is really loud. I can't really answer your question because I simply don't know exactly what the consequences are. I read that that someone had the cylinder head replaced because of this. I recall that it cost AUD11,000 when it was done at the dealer, but I think that is an isolated case.
Quote:
Originally Posted by Ansonlai View Post
As this is my first time in RWD, I am thinking if I have to get a less power 325i than a 335i, afraid of losing control with a higher power, or the DSC in BMW is well enough to prevent that if I am not very aggressive driver.
That is something I wouldn't worry about. I found BMW's DSC system is works really well and it doesn't interfere with the cars handling unless you are really aggressive or in an emergency situation. BMW's chassis design is generally very good even without electronic aids and doesn't have a problem handling the power available. Generally the more power, the better it is!
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      06-08-2013, 10:27 AM   #13
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Quote:
Originally Posted by John_01 View Post
regarding the ticking noise - yes I would be concerned if it is really loud. I can't really answer your question because I simply don't know exactly what the consequences are. I read that that someone had the cylinder head replaced because of this. I recall that it cost AUD11,000 when it was done at the dealer, but I think that is an isolated case.

That is something I wouldn't worry about. I found BMW's DSC system is works really well and it doesn't interfere with the cars handling unless you are really aggressive or in an emergency situation. BMW's chassis design is generally very good even without electronic aids and doesn't have a problem handling the power available. Generally the more power, the better it is!
Hmm, just wonder if I can diagnose the problem when I test drive the car as the dealer may warm up the car before I test drive it or before the mechanic that i organized arrives.

What about 335i, when I test drive it, what should I watch out in term of mechanic?

Thanks a lot
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      06-13-2013, 07:58 PM   #14
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It's my understanding that the n52 burns a fair amount of oil too?
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      06-14-2013, 01:19 AM   #15
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Quote:
Originally Posted by HecticX5 View Post
You can find out by going to Ali's Sick Cylinder Specialists who have a branch in Perth. They can also inform you to not make a thread about every question you have as well. Cheers, Hectic.



.........and fucking amen to the last part as well
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      07-13-2013, 07:13 PM   #16
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i thought this issue was only with the 3ltr inline six engones, i didn't know this issue was with the 2.5ltr ones also anyone with the 2.5ltr 325i havign this issue?

Thanks..
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      07-13-2013, 09:05 PM   #17
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Ticking noise happen more on the lower end 323i and 325i engines. I don't think I have seen a ticking noise N52B30.
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      07-14-2013, 06:31 AM   #18
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Quote:
Originally Posted by Jin.ActiveMotorwerke View Post
Ticking noise happen more on the lower end 323i and 325i engines. I don't think I have seen a ticking noise N52B30.
shocking didn't know that, i thought the issue was with the 3ltrs N52 like in usa,
i know the euro 330i (3ltr inline six) has valve lifter issues, never knew the 2.5ltrs have it, anyways is this a serious issue once you notice the ticking sound? does it lead to less power or engine damage? Just checked by production date of my car by running the VIN- Prod.date 2008-12-16
guess i m safe?

Thanks..

Last edited by insane79; 07-14-2013 at 06:42 AM.
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      07-14-2013, 07:04 AM   #19
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It shouldn't damage any part of the engine. And the design fault lead to the insufficient oil is only towards the hydraulic lifters, so every other part of the engine is fine.

Also want to mention that for BMW engines with VANOS especially the N52 engines should shorten their oil change interval as there is a chance of the camshaft sealing ring grinding into the cylinder head causing lost of oil pressure to the VANOS gears, the only fix for this is new cylinder head.
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      07-23-2013, 03:08 PM   #20
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Guys,
my production date of my car by running the VIN is 2008-12-16, i should be ok right? freaking paranoid as i bought this car used.

Thanks..
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