Subject: Have you ever heard THIS SOUND inside your engine?
URL: http://www.bimmerfest.com/forums/sho....php?t=1181089

Nobody on Bimmerfest knows what is causing this noise and I can't use the
car until I figure out how to figure out what the noise is.

This only started after I did some work this weekend on the valve cover but
it sounds like someone left a socket inside the engine and it's bouncing
around somewhere.

I'm pretty sure I didn't leave anything inside where this sounds like it's
in the intake manifold but it's hard to figure out where it's coming from
as it's intermittent.

It sounds like it's coming from the top of the engine somehow but it's hard
to place where.

You should not need a login to read that thread and download the videos.
http://www.bimmerfest.com/forums/attachment.php?attachmentid=730369&d=1513035084

Here's just an audio file:
http://www.bimmerfest.com/forums/attachment.php?attachmentid=730353&d=1513034666

When you download them, remove the *pdf which I added so that the MP4 would
look like a PDF to the forum upload GUI.

I can't imagine what is making that noise which is why I'm asking you for
how to debug that noise. Thanks!

On Tue, 12 Dec 2017 04:36:26 -0000 (UTC), Arthur Wood wrote:

Subject: Have you ever heard THIS SOUND inside your engine?
URL: http://www.bimmerfest.com/forums/sho....php?t=1181089

Nobody on Bimmerfest knows what is causing this noise and I can't use the
car until I figure out how to figure out what the noise is.

This only started after I did some work this weekend on the valve cover but
it sounds like someone left a socket inside the engine and it's bouncing
around somewhere.

I'm pretty sure I didn't leave anything inside where this sounds like it's
in the intake manifold but it's hard to figure out where it's coming from
as it's intermittent.

It sounds like it's coming from the top of the engine somehow but it's hard
to place where.

You should not need a login to read that thread and download the videos.
http://www.bimmerfest.com/forums/attachment.php?attachmentid=730369&d=1513035084

Here's just an audio file:
http://www.bimmerfest.com/forums/attachment.php?attachmentid=730353&d=1513034666

When you download them, remove the *pdf which I added so that the MP4 would
look like a PDF to the forum upload GUI.

I can't imagine what is making that noise which is why I'm asking you for
how to debug that noise. Thanks!

The only time I've heard a similar noise is from crank throws hitting cam lobes.
It was when I rebuilt a 352 and reinstalled the spacer used for the old timing gear.
The new cast iron timing gear had the that spacer cast into the gear.
That allowed the cam to travel in the path of the throws.
It was intermittent until the cam bearings wiped.
Otherwise, your theory is as good as mine.

replying to Arthur Wood, Iggy wrote:
None of the links worked for me and my fiddling around with them. But, if it's
sounding like something's loose and damaging everything in its path, then
you'll have to get back in and re-do your valve cover work. Maybe a 3/8's to
1/4 ratchet reducer, short extension, hex bit, rolled-up tube of Threadlocker,
etc. got left behind. Even though it's a BMW, I can't imagine you accidently
and unknowingly created a problem...unless your valve cover work included
removing the PCV or slopping in RTV that clogged venting and the sound is
pressure blowing the seals.

--
for full context, visit https://www.homeownershub.com/mainte...a-1152886-.htm

Arthur Wood wrote:

Are you on a Macintosh?

Hopefully the answer will be in this thread if someone knows the Macintosh.
Can a Macintosh person tell us how to change the name of a file?
https://groups.google.com/d/msg/comp.sys.mac.apps/lvUtrehWuQw/59E76aWxCQAJ

It seems from my PMs on the web forum that the Macintosh users are having
trouble renaming the file to remove the ".pdf" extension so I asked on
comp.sys.mac.apps how Macintosh users can change the file name from
file.mp4.pdf to file.mp4 so they can watch the video.
https://groups.google.com/forum/#!topic/comp.sys.mac.apps/lvUtrehWuQw

Here are some of the responses if you're on a Macintosh and need to change
the file name from file.mp4.pdf to file.mp4 instead.

In alt.home.repair, on Tue, 12 Dec 2017 04:36:26 -0000 (UTC), Arthur
Wood wrote:


You should not need a login to read that thread and download the videos.
http://www.bimmerfest.com/forums/attachment.php?attachmentid=730369&d=1513035084

Here's just an audio file:
http://www.bimmerfest.com/forums/attachment.php?attachmentid=730353&d=1513034666

It's hard for me to tell what the sound is, so,

Any chance the thermostat went bad and the coolant is boiling?

Phil Kangas wrote:

Perhaps you changed something that controls ignition action?
Like, something is changing the spark timing and it is now
far
too advanced? Spark knock? Maybe? hmmm....

I hadn't thought of that, where I did recently install the BMW dealer
software of the era when my car was new called INPA which allows me to read
all the electronic control units and reset the codes for all modules (not
just OBDII modules):
https://www.turboimagehost.com/p/36851946/inpa1.jpg.html

Some of this BMW dealer software can also program each module but I didn't
run any of that, and it can reset something called the "adaptations",
again, which I didn't touch to my knowledge.

I should be able to get the spark advance out of the dealer software though
https://www.turboimagehost.com/p/36851948/lean1.jpg.html

My OBDII reader shows spark at 6 degrees advanced at idle and then it jumps
to 20 and 30 degrees in the live data as I drove - where I don't actually
know what it's supposed to be. I don't even know where that data is.
https://www.turboimagehost.com/p/36851949/lean2.jpg.html

I have heard spark knock before where it sounds like marbles under load.
This doesn't sound like marbles. It sounds more like one marble.

wrote:

.. sprocket bolt loosened itself off ?

I hadn't thought of the chains.
I'll look more closely and try to turn them somehow.
https://www.turboimagehost.com/p/36851897/camshaft_timing_chain.jpg.html

I did try the USB endoscope today but I can't get it to focus on anything:
https://www.turboimagehost.com/p/36851893/01_endoscope.jpg.html

I also tried the classic flexible magnet tool for picking up objects:
https://www.turboimagehost.com/p/36851894/02_magnet.jpg.html

I even tried a powerful shop vac - but this plenum is very complex:
https://www.turboimagehost.com/p/36851895/03_vacuum.jpg.html

Even with a tiny flexible hose as the vacuum hose I couldn't do much:
https://www.turboimagehost.com/p/36851896/04_vacuum.jpg.html

wrote:

You still haven't linked to a sound file.

For some strange reason it has a .wav.pdf extension, if you rename it to
..wav it plays fine.

http://www.bimmerfest.com/forums/attachment.php?attachmentid=730353&d=1513034666

On Wednesday, 13 December 2017 09:12:38 UTC, Andy Burns wrote:
tabbypurr wrote:

You still haven't linked to a sound file.

For some strange reason it has a .wav.pdf extension, if you rename it to
.wav it plays fine.

http://www.bimmerfest.com/forums/attachment.php?attachmentid=730353&d=1513034666

a thinnish metal knocking sound with no engine running. Odd

replying to Arthur Wood, Iggy wrote:
Sorry in advance, I couldn't resist with a discussion so on point. I don't
know why anyone buys or even puts up with German crap. How many decades,
models and makes does it take. Truth about BMW e46 M54 engine
https://www.youtube.com/watch?v=Kn4ZnT5qPpo

--
for full context, visit https://www.homeownershub.com/mainte...a-1152886-.htm

Are you looking for a vacuum leak or a positive air pressure leak?

The former may be determined using propane. The engine will rev higher when it sucks propane into a vacuum leak. Connect a fine flexible hose to your propane torch on a low setting.

The latter may be tested with Magician's Smoke in a Can.

http://www.filmtools.com/diffusionin...kaAtk4EALw_wcB

Courtesy of the Tappet Brothers.

Peter Wieck
Melrose Park, PA

On Friday, 15 December 2017 14:37:42 UTC, Arthur Wood wrote:

My biggest lament is that there should be a cheap (hundred dollar range)
effective smoke machine out there. All it has to do is blow thick smoke at
three psi which doesn't seem all that hard to do.

Send me $100 and I'll give you a red hot nail, a food can & $1's worth of glycerine.


NT

On 2017-12-12 22:07, Arthur Wood wrote:
some complete horse ****

It seems like you should probably engage the services of a mechanic who
has the first clue what he is doing, unlike yourself.

On 18/12/2017 12:15 PM, Mary-Jane Rottencrotch wrote:
On 2017-12-12 22:07, Arthur Wood wrote:
some complete horse ****

It seems like you should probably engage the services of a mechanic who
has the first clue what he is doing, unlike yourself.

Seems like the go!

--

Xeno

In article ,
l says...

On 2017-12-12 22:07, Arthur Wood wrote:
some complete horse ****

It seems like you should probably engage the services of a mechanic who
has the first clue what he is doing, unlike yourself.

Now that wasn't nice!

We do have a mechanic that works for us at the plant that is very good
with a hammer and grease gun, maybe he'll suffice!

Jamie