Scary sound n54 with revs

Zef · 06-12-2017, 10:40 AM

Hi guys!

Please look my video, i recorded it form the passanger side, i think it is abnormal loud knocking.

Here's a list of things I've tried so far while chasing this noise:

-replaced all 24 lifters
-cam ledges and rectangrings absolutly normal. no cratches(cams and rockers show no abnormal wear)
-ran engine with serpentine belt removed; noise persists
-all six injectors are 12 revision
-change oil and filter (shell 5w40)

look around with stetoscope, and i cant localize this sound. But it louder from the passanger side.

No metall shavings in oil.

My car fully stock, no any mods. This sound i cant hear into the car, but if windows open and driven near the wall - this sound definitely audible.

Help me please. May be it from chain tensioner? Any ideas...

its driver side:

Any advice?

P.s. sorry for my english (

Meatos · 06-12-2017, 10:43 AM

Look for exhaust leak, manifold and downpipes

ken335AZ · 06-12-2017, 12:56 PM

Yeah, most of what I heard was the direct injection clicking and an exhaust leak tick.

Izero · 06-12-2017, 05:15 PM

do a leak test on the exhaust system, if no leak is found then you might have a much bigger problem on your hands...

Zef · 06-12-2017, 11:08 PM

Quote:

Originally Posted by Izero

do a leak test on the exhaust system, if no leak is found then you might have a much bigger problem on your hands...

exhaust test... how it perform? can you give any instructions about it?

Great idea! Can't imagine how I can skip it when car was on a lift. It sound was from front catalysts converter area. I'm sure 99% that it is a leak in the exhaust. Thanks! I will try it and tell about the results.

Snypa · 06-14-2017, 12:17 PM

Let us know.

MJ80. · 06-15-2017, 03:40 AM

I have a pretty similar tick, but mine sounds more metallic than yours does in the vid ? Does yours sound metallic at all ? Mine rises with revs and does not go away, curious how to diagnose the exhaust leak ?

Aus335iguy · 06-15-2017, 04:59 AM

Quote:

Originally Posted by MJ80.

I have a pretty similar tick, but mine sounds more metallic than yours does in the vid ? Does yours sound metallic at all ? Mine rises with revs and does not go away, curious how to diagnose the exhaust leak ?

Get two of your mates to block off both pipes with their feet. Walk around car and listen to air rushing out.

Meatos · 06-15-2017, 07:15 AM

Quote:

Originally Posted by Aus335iguy

Get two of your mates to block off both pipes with their feet. Walk around car and listen to air rushing out.

And those with no friends..

Get 2 bananas and do it yourself

SM335i · 06-16-2017, 03:07 PM

normal.. injector noise probably from bad gas

Zef · 06-17-2017, 11:04 AM

Quote:

Originally Posted by MJ80.

I have a pretty similar tick, but mine sounds more metallic than yours does in the vid ? Does yours sound metallic at all ? Mine rises with revs and does not go away, curious how to diagnose the exhaust leak ?

i think metallic too. Sense like valve tapping. If leak before turbos - it seems true.

Zef · 06-22-2017, 10:26 AM

today again lift car, close exhaust tube and not found any leaks

all seems good.

poke with stetoscope again, and on this screw sound difenitly audible

maybe leak before turbos on manifold? for example graphite ring broken?

my mechanic think it knock from exhaust camshaft, but camshift look very nice...

what you think? how localize problem?

Bimmer 808 · 06-22-2017, 12:32 PM

have your mechanic do a compression test.

Zef · 06-22-2017, 12:48 PM

Quote:

Originally Posted by Bimmer 808

have your mechanic do a compression test.

For what? Explain you idea?

Bimmer 808 · 06-22-2017, 12:57 PM

Quote:

Originally Posted by Zef

For what? Explain you idea?

easy and cheap way to make sure your engine is healthy to help you rule out what is causing your issue. you can do it yourself.

Aus335iguy · 06-22-2017, 04:26 PM

It does sound like a top end issue like a cam ledge or worn lifter to me.

feuer · 06-22-2017, 08:37 PM

Quote:

Originally Posted by Aus335iguy

It does sound like a top end issue like a cam ledge or worn lifter to me.

Those will trigger Vanos fault codes. I would send oil sample to lab. Hopefully will not show excess metal due to spun bearings.

Zef · 06-23-2017, 12:46 AM

Quote:

Originally Posted by feuer

Those will trigger Vanos fault codes. I would send oil sample to lab. Hopefully will not show excess metal due to spun bearings.

spun bearings - all new, i rebuild motor 6 month ago.

knock of bearings - thud, my sound sonant.

feuer · 06-23-2017, 09:05 AM

Quote:

Originally Posted by Zef

spun bearings - all new, i rebuild motor 6 month ago.
knock of bearings - thud, my sound sonant.

What does your engine rebuilder says about this? Oil analysis aren't expensive. Get one done. Determining defects by noise/sound is dificult.

Zef · 06-23-2017, 01:08 PM

Quote:

Originally Posted by feuer

What does your engine rebuilder says about this? Oil analysis aren't expensive. Get one done. Determining defects by noise/sound is dificult.

rebuilder/mechanic says: i don't understand what make this sound... Suspects exhaust camshaft...

feuer · 06-23-2017, 01:18 PM

Quote:

Originally Posted by Zef

rebuilder/mechanic says: i don't understand what make this sound... Suspects exhaust camshaft...

Like I said in post#17 that will most likely trigger Vanos fault code. Issues with chain would probably trigger Timing fault Codes. It has been 6 month, so the engine rebuilder need to take responsibility and fix it for you, whatever it is.

SlimE92 · 06-23-2017, 05:55 PM

Quote:

Originally Posted by feuer

Quote:

Originally Posted by Zef

rebuilder/mechanic says: i don't understand what make this sound... Suspects exhaust camshaft...

Like I said in post#17 that will most likely trigger Vanos fault code. Issues with chain would probably trigger Timing fault Codes. It has been 6 month, so the engine rebuilder need to take responsibility and fix it for you, whatever it is.

Agreed

06-12-2017, 10:40 AM	#1
Zef New Member 6 Rep 28 Posts Drives: 335xi 2008 Join Date: Mar 2017 Location: Russia iTrader: (0)	Scary sound n54 with revs Hi guys! Please look my video, i recorded it form the passanger side, i think it is abnormal loud knocking. Here's a list of things I've tried so far while chasing this noise: -replaced all 24 lifters -cam ledges and rectangrings absolutly normal. no cratches(cams and rockers show no abnormal wear) -ran engine with serpentine belt removed; noise persists -all six injectors are 12 revision -change oil and filter (shell 5w40) look around with stetoscope, and i cant localize this sound. But it louder from the passanger side. No metall shavings in oil. My car fully stock, no any mods. This sound i cant hear into the car, but if windows open and driven near the wall - this sound definitely audible. Help me please. May be it from chain tensioner? Any ideas... its driver side: Any advice? P.s. sorry for my english (
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06-12-2017, 10:43 AM	#2
Meatos Private First Class 61 Rep 146 Posts Drives: 335i n54 -07 Join Date: May 2017 Location: Sweden iTrader: (0)	Look for exhaust leak, manifold and downpipes Last edited by Meatos; 06-12-2017 at 10:52 AM..
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06-12-2017, 12:56 PM	#3
ken335AZ Yeah it's got a welded diff 40 Rep 56 Posts Drives: '07 e92 FBO, JB4+BEF, E85+Meth Join Date: Oct 2012 Location: Syracuse, NY/Tucson, AZ iTrader: (0)	Yeah, most of what I heard was the direct injection clicking and an exhaust leak tick.
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06-12-2017, 05:15 PM	#4
Izero Private First Class 29 Rep 128 Posts Drives: 2008 BMW 335Xi - Alpine White Join Date: Jan 2015 Location: New Jersey iTrader: (0)	do a leak test on the exhaust system, if no leak is found then you might have a much bigger problem on your hands... __________________
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06-14-2017, 12:17 PM	#6
Snypa Captain 40 Rep 656 Posts Drives: Like a mahdman ! Join Date: May 2013 Location: I-75 iTrader: (3)	Let us know. __________________ SUPER SLOW E90
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06-15-2017, 03:40 AM	#7
MJ80. Major 204 Rep 1,103 Posts Drives: E92 335i DCT Individual Join Date: Oct 2013 Location: Gold Coast, Australia. iTrader: (0)	I have a pretty similar tick, but mine sounds more metallic than yours does in the vid ? Does yours sound metallic at all ? Mine rises with revs and does not go away, curious how to diagnose the exhaust leak ?
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06-16-2017, 03:07 PM	#10
SM335i Banned 110 Rep 1,059 Posts Drives: Car Join Date: Apr 2013 Location: Location iTrader: (0)	normal.. injector noise probably from bad gas
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06-22-2017, 10:26 AM	#12
Zef New Member 6 Rep 28 Posts Drives: 335xi 2008 Join Date: Mar 2017 Location: Russia iTrader: (0)	today again lift car, close exhaust tube and not found any leaks all seems good. poke with stetoscope again, and on this screw sound difenitly audible maybe leak before turbos on manifold? for example graphite ring broken? my mechanic think it knock from exhaust camshaft, but camshift look very nice... what you think? how localize problem?
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06-22-2017, 12:32 PM	#13
Bimmer 808 MT or bust! 172 Rep 289 Posts Drives: 2010 E90 335i M Sport, 6MT Join Date: Nov 2009 Location: Alexandria iTrader: (0) Garage List 2020 X3 M40i [0.00] 2015 M235i [0.00] 2006 330i [0.00] 2010 335i [0.00]	have your mechanic do a compression test. __________________ 2010 E90 335i M Sport, MT - BMW PE; VRSF 7in HD; RB PCV; VRSF CP; Turbosmart KPB BOV; M3 Cowl; VRSF Cerakote DPs; Carly coding; ECS Scoops; Ziza interior LEDs; Fuel-It! Bucketless; Diff lock down brace V2; MHD E60 Map from BQ; Mishimoto OCC; Fuel-It! Ethanol Sensor; Apex 18x9 ARC-8's; StopTech slotted rotors; HPS pads; ECS brake lines; MMP turbos, inlets, outlets; 034 mounts; Kumho PS31s; BimmerLife coils
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06-22-2017, 04:26 PM	#16
Aus335iguy Colonel 660 Rep 2,140 Posts Drives: 2009 e92 335i MSport DCT Join Date: Jul 2015 Location: Sydney Aus iTrader: (0) Garage List 2009 BMW 335i [10.00]	It does sound like a top end issue like a cam ledge or worn lifter to me. __________________ When you doppelkaplung you doppel your fun.
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