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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Fast metal on metal ticking noise



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      11-21-2012, 11:18 AM   #23
Jeff@TopGearSolutions
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Depends on which metal ticking noise, but the one most people complain about is the fuel pressure release valve, you will know it is the pressure releases valve cause if you blip the throttle it goes away. It will come back after a second or two. (this is a normal noise on this car).

If the tick is anything else other then the above, I'm not sure.
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      11-21-2012, 02:51 PM   #24
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First and foremost, find out if ticking is speed-related or RPM-related. Speed related = drivetrain related, RPM-related = engine related.
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      11-22-2012, 12:32 AM   #25
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I think Jeff may have it. But I have never experienced this till today actually. So I can't say I agree that the sound is normal. It does go away if I blip the throttle and reoccurs when the RPMs get back down to ~600.
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      11-22-2012, 01:34 AM   #26
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I had this same ticking sound on my 07 when Idling; Applying little gas will make it go away and after letting off it comes back. Haven't had it for couple of months tho. I thought they were the lifters.
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      11-22-2012, 07:41 AM   #27
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I have it too. It may be the alternator pulley. Only happens when its cold out, regardless of engine temp.
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      11-22-2012, 01:00 PM   #28
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Had a similar sound on mine, turned out the Torque converter bolt was not torque correctly and torque converter was not seated correctly. The noise would happen once in awhile, only when it was cold outside. The dealer fixed the issue and no more metal clicking noise.
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      11-22-2012, 05:45 PM   #29
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      11-22-2012, 07:38 PM   #30
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Wow what a rattle!!!
But this is not the one that we talking about..
Go se my video on YouTube:
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      11-22-2012, 09:13 PM   #31
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It's either I deal with that garbage on idle with the Cobb installed. Or uninstall the Cobb and have the usual waste gate rattle with deceleration...
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      11-28-2012, 02:27 PM   #32
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Quote:
Originally Posted by Graphite Shark View Post
Same issue here as well. Most apparent in a fast food drive-thru while waiting in queue. The engine will drop to a very low idle, then CLAP CLAP CLAP CLAP sound. Giving it even the very smallest amount of throttle will very slightly raise the idle speed and the sound goes away. If left to idle back down, the sound returns in a few seconds at most.

Does not happen all the time, fairly rare, though annoying and very apparent when it happens.

Not the injectors- they make a ticking sound; not the waste gates, famuliar with that rattle in a tin can sound. This sounds like a small hammer hitting the side of the block, or a timing chain slapping something; even slightly like a main bearing.

I know some engines use a timing chain tensioner which uses oil pressure to press a small "shoe" against the side of the chain to keep tension elevated. Not sure if the N54 does as well, or that's a factor.
I just notice mine today and came across this thread. Noticed it at the drive-thru.
I just ordered a cobb and my CPO just expired this month. Sound like the rocker arms or valve tap. I guess I am going to see if BMW will take a look before I install the COBB.
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      11-28-2012, 02:59 PM   #33
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Quote:
Originally Posted by Pankakez & BMWs View Post
I think Jeff may have it. But I have never experienced this till today actually. So I can't say I agree that the sound is normal. It does go away if I blip the throttle and reoccurs when the RPMs get back down to ~600.
Yes, that is normal. That is the fuel pressure release valve. The HPFP pushes a lot of pressure that is excessive at idle.
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      12-05-2012, 07:50 AM   #34
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Mine Also makes that noise. If you touch the throttle very slowly, so slightly that the rpms don't even increase, the noise goes away for a second. Weird.
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      11-01-2013, 03:55 PM   #35
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I haven't had it since I cleaned out the vanos... well temps weren't cold out either, will keep am eye ... also 0w-40 helped
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