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      02-28-2009, 09:09 PM   #1
mikeokimster
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08 328i E92 Engine Knock

Background info:

I purchased the car with 7 miles this past August. The car has been flawless and has been a blast to drive. Right now I am at about 9000 miles.

Incident:

I started up the car this evening and noticed that there was a slight engine knocking sound. I figured it would just disapate after it warmed up. When it was warmed up I drove to the atm at the bank. As I pull up along side the wall and lower my windows, I was suprised how apparent the knocking noise was. I tapped the throttle a few times and the frequency of the knocks got faster.

I will need to call up the dealer to have them check out my car. I am suprised to get engine knock so early on.
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      02-28-2009, 09:19 PM   #2
DESI4life10
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Your not alone man

Check this thread out Knocking

It is a known problem with these cars. I just got my cylinder head changed because of this.
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      02-28-2009, 09:21 PM   #3
mikeokimster
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Quote:
Originally Posted by DESI4life10 View Post
Your not alone man

Check this thread out Knocking

It is a known problem with these cars. I just got my cylinder head changed because of this.
I saw some of your posts on that thread. Did they replace the necessary parts with one of the same part numbers or parts with revisions?
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      02-28-2009, 09:43 PM   #4
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Yea they replaced the cylinder head with a revised design that has a bigger hole to allow for more oil to be pumped to the lifters.

What I don't understand is why this problem happens on the 08 and up models.

The sound I was getting (ticking) sounds like this: Ticking

Replacing the cylinder head is the last resort that BMW will use. There is a bleeding cycle first if that does not work then its the replacement of the lifters. After that you will then have to be persistent to get the head replaced.

Hope its nothing too serious with your car.
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      02-28-2009, 09:53 PM   #5
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Quote:
Originally Posted by DESI4life10 View Post
Yea they replaced the cylinder head with a revised design that has a bigger hole to allow for more oil to be pumped to the lifters.

What I don't understand is why this problem happens on the 08 and up models.

The sound I was getting (ticking) sounds like this: Ticking

Replacing the cylinder head is the last resort that BMW will use. There is a bleeding cycle first if that does not work then its the replacement of the lifters. After that you will then have to be persistent to get the head replaced.

Hope its nothing too serious with your car.
How much down time with your car did you experience?
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      02-28-2009, 10:07 PM   #6
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The Bleed procedure is about half a days job.

Lifter Replacement is probably a days worth.

Cylinder head replacement is a 2 day job.

Its not too bad, but the problem is trying to get that ticking sound to come up at the dealer That could take some time

The ticking noise mostly comes up in cars that do not get driven long distances everyday. Short commutes does not give the engine enough time to circulate the oil up into the upper chambers of the engine where its needed to lubricate the lifters.
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      02-28-2009, 10:15 PM   #7
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Quote:
Originally Posted by DESI4life10 View Post
The Bleed procedure is about half a days job.

Lifter Replacement is probably a days worth.

Cylinder head replacement is a 2 day job.

Its not too bad, but the problem is trying to get that ticking sound to come up at the dealer That could take some time

The ticking noise mostly comes up in cars that do not get driven long distances everyday. Short commutes does not give the engine enough time to circulate the oil up into the upper chambers of the engine where its needed to lubricate the lifters.
This is going to be hard for the dealer to detect since they are about 15 highway miles away =(
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      02-28-2009, 10:24 PM   #8
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Quote:
Originally Posted by mikeokimster View Post
This is going to be hard for the dealer to detect since they are about 15 highway miles away =(
Yea..fortunate for me, my dealer is 2 miles away. Basically I drove the car to the dealer not going any higher than 2k rpm. Apparently for me, driving below 2000 rpm helps to trigger the ticking on the next start Weird but it worked for me.
I also told the dealer to keep the car overnight in case it didn't come up at that time. It is a little frustrating as the dealer will do nothing unless they hear the sound.
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      02-28-2009, 10:49 PM   #9
mikeokimster
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Any how immediate the threat is with this issue?
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      02-28-2009, 11:01 PM   #10
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It won't really harm your engine. In the long run, it can create some issues (when out of warranty). If the sound comes only once in a while, I would not worry about it too much. Drive the car a little hard here and there You got 4 years to get this fixed so enjoy your car for a bit.
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