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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #76  
Old 10-05-2013, 03:56 PM
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WhiteFury WhiteFury is offline
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Misfiring after Intake Port Cleaning!

Links don't show up. Are you saying I can't just take them out and clean them? Are they in the same location?

The fact that I have a N55 may change your thoughts on my situation. Most people say the N55 doesn't have injector issues. I don't actually know.

Does this change anything? I am going to get a readout of all the codes.

If random misfires is the only codes and the combustion errors they say then I guess injectors or a leak is the issue since my plugs and coils are new.
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  #77  
Old 10-05-2013, 04:05 PM
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Misfiring after Intake Port Cleaning!

Actually I got it on the webview, app wouldn't let me see it.

Look at page 13 that Evap can type deal. I put carb cleaner in the hose attachment to the left during the clean.

Now after seeing that PDF if makes me think I sprayed carb and gunk on the injectors. Because I had some valves open and I feel since they are flush against the roof of the combustion chamber anything blasted through the open valve will cover it.

Looks like its time to remove the injector and inspect and clean. Along with vanos screens.
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  #78  
Old 10-05-2013, 06:42 PM
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Misfiring after Intake Port Cleaning!

If I decide to replace the vanos sensors or if I have to they are only $96 each. So not too bad.

Do they have to be coded or anything or is it direct replace and done with it?
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  #79  
Old 10-06-2013, 10:07 PM
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Misfiring after Intake Port Cleaning!

I gave a member of E90post.com my vin number and he lives in Germany. He gave it to the dealer to whom his friend works for in Munich.

It says that I have an ECU update available for my car and it fixes possible injector problems, high-voltage on the gauge cluster, and it also fixes the idle and raises it up 50 rpm's.

I wonder if this could be my sex I know it's high hopes but I wonder.


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  #80  
Old 10-07-2013, 07:58 AM
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Quote:
Originally Posted by WhiteFury View Post
I gave a member of E90post.com my vin number and he lives in Germany. He gave it to the dealer to whom his friend works for in Munich.

It says that I have an ECU update available for my car and it fixes possible injector problems, high-voltage on the gauge cluster, and it also fixes the idle and raises it up 50 rpm's.

I wonder if this could be my sex I know it's high hopes but I wonder.


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I don't think this is your fix, but I wouldn't do it until after you've fixed the real issue.
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  #81  
Old 10-07-2013, 08:30 AM
hondo402000 hondo402000 is offline
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why dont you just drive the car for a while, and run a few tanks of gas thru it, as long as its not messing the engine up, maybe over time is will clear up,
since you sprayed cleaner into parts and hoses, that could have done something
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  #82  
Old 10-07-2013, 08:45 AM
Rahulk Rahulk is offline
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Misfiring after Intake Port Cleaning!

Try this... Take the intake off completely...

Also check the throttle body connection, that elbow is known to crack... You
Might be looking at the wrong place... Start at the beginning - MAF up... (Also, hope you didn't hit the MAF with any carb cleaner....)

After you have verified the integrity of everything up to the intake... Turn the engine 720 degrees. Check all the valves... Make sure they are actually
Functioning... Going up and down... If 1 valve is stuck or you popped off a spring you will get misfires on the cylinder. If the valves are all moving... Get an inspection camera, Harbor freight, Home Depot, lowes all have them... And inspect the valves to cylinder head area... From the outside... Make sure all of them look the same.... If everything is okay reassemble making sure everything is plugged in... I have heard the case where someone over revved there n55 and it dropped a valve... Killed the engine....

Theory here is redo what you did (minus the cleaning) and maybe you will get it right this time...


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  #83  
Old 10-07-2013, 08:46 AM
Rahulk Rahulk is offline
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Misfiring after Intake Port Cleaning!

The dealer said they did a smoke test... So we should rule out an air leak...


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  #84  
Old 10-07-2013, 10:26 AM
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Misfiring after Intake Port Cleaning!

I didn't race the engine and so no over rev. Since it was working the day before wouldn't it rule out a dropped or bent valve?

Also idle and non boost drives pretty decently, if a valve was stuck would that not be very very bad idle?


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  #85  
Old 10-07-2013, 11:39 AM
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Quote:
Originally Posted by WhiteFury View Post
I didn't race the engine and so no over rev. Since it was working the day before wouldn't it rule out a dropped or bent valve?

Also idle and non boost drives pretty decently, if a valve was stuck would that not be very very bad idle?

So, WF....dealer's had a look....what codes were found?


BTW I snapped a pic of a Service Adviser at the dealer just North of San Francisco - here he is explaining how their GT1 reads codes:


Last edited by CALWATERBOY; 10-07-2013 at 11:42 AM.
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  #86  
Old 10-07-2013, 11:47 AM
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Misfiring after Intake Port Cleaning!

Here is the photos of the gt1 and results from the dealer.

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  #87  
Old 10-07-2013, 11:58 AM
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Originally Posted by WhiteFury View Post
Here is the photos of the gt1 and results from the dealer.

Call me crazy but don't see no codes! Yet we know there were - misfire observed.

Not clear - did the ARGIS inspection find the misfires?
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  #88  
Old 10-07-2013, 12:10 PM
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Does it really say: "spudders" in the description of the problem?


Maybe a leakdown test is in order next.
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  #89  
Old 10-07-2013, 12:21 PM
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Misfiring after Intake Port Cleaning!

Quote:
Originally Posted by CALWATERBOY View Post
Call me crazy but don't see no codes! Yet we know there were - misfire observed.

Not clear - did the ARGIS inspection find the misfires?
Codes on first photo.


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  #90  
Old 10-07-2013, 12:23 PM
hondo402000 hondo402000 is offline
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so what is the point of doing a leak down test? to see if a valve is hanging open, I doubt its worn rings, and I believe that is the reason for a leak down test
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  #91  
Old 10-07-2013, 12:28 PM
surfcity335i surfcity335i is offline
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so what is the point of doing a leak down test? to see if a valve is hanging open, I doubt its worn rings, and I believe that is the reason for a leak down test
Leakdown test tells you where the loss is. Not just rings. If rings, the air goes into the crankcase, if valves, it comes out the tailpipe or intake whichever the case may be.

Last edited by surfcity335i; 10-07-2013 at 12:50 PM.
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  #92  
Old 10-07-2013, 12:44 PM
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Misfiring after Intake Port Cleaning!

Dealer just said that every oil Change that the previous Owner did was overdue. Two of the oil changes that were done at the dealer from the previous owner 4000 miles overdue.

The very first oil change that was doing the car was brand-new was 500 miles overdue.

When I first bought the car it was 500 miles overdue for an oil change so I put in it 0W 40 mobile one.

I'm going to do a leak down test on cylinder one and two which is where the codes are misfiring.

Here is the codes it was throwing.

002EFE
002EFF
002EE0
002EE4
002F00
002EE7




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Last edited by WhiteFury; 10-07-2013 at 12:53 PM.
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  #93  
Old 10-07-2013, 12:45 PM
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I'm also assuming the fuel pumps have been tested and are ok? I don't know the history of the vehicle, just thinking/typing aloud.
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  #94  
Old 10-07-2013, 12:54 PM
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Misfiring after Intake Port Cleaning!

Quote:
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I'm also assuming the fuel pumps have been tested and are ok? I don't know the history of the vehicle, just thinking/typing aloud.
No codes for the pump. Dealer said the pump would cause long starts and bad idle.
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  #95  
Old 10-07-2013, 01:02 PM
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No codes for the pump. Dealer said the pump would cause long starts and bad idle.
Good, I assumed they tested it, but didn't see it listed and it makes sense most have had the updated pump in the past if they had issues.
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  #96  
Old 10-07-2013, 01:10 PM
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Misfiring after Intake Port Cleaning!

I opted for a leak down over compression test as the leakdown is more accurate if i can only do one right?

a compression test will show if a leak happens but leak down shows where.

If I pass the leak down test I guess it's either injectors, pump or DME.

I have read alot of threads on DME being the cause and guys replacing everything.
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  #97  
Old 10-07-2013, 02:33 PM
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Misfiring after Intake Port Cleaning!

Update**

Cylinder 1 & 2 leak Down test results are as follows.

Cylinder 1 - 3.7% loss

Cylinder 2 - 3.9% loss

Dealer said factory specs are less than 8%.

For the first time I just got a misfire on Cylinder #5

1,2,5 injector deactivation and misfires with random misfires.

Going to swap cylinder 1-3 fuel injectors to see if the code follows since I never get #3 misfires.

If it doesn't follow now what? Could it be a vacuum leak still or a DME?

What about fuel filter?

Dealer says fuel pump would throw codes or all cylinders.
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  #98  
Old 10-07-2013, 03:09 PM
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Misfiring after Intake Port Cleaning!

just purchased all brand-new intake manifold bolts and the head studs to put into the intake side of the cylinder head. This will eliminate any possibilities of stripped aluminum bolts.

I am going to get the dealer torque specs as well as patter to re-install.
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  #99  
Old 10-07-2013, 03:16 PM
surfcity335i surfcity335i is offline
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Originally Posted by WhiteFury View Post
just purchased all brand-new intake manifold bolts and the head studs to put into the intake side of the cylinder head. This will eliminate any possibilities of stripped aluminum bolts.

I am going to get the dealer torque specs as well as patter to re-install.
I am starting to feel very bad for you. Sounds like you've got an effing nightmare on your hands.
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  #100  
Old 10-07-2013, 03:52 PM
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Misfiring after Intake Port Cleaning!

One thing is for sure the idle is getting worse it's bogging and coughing alot.

Edit: I've been driving it some more today I realize that the shudder and hesitation while driving is actually not just while in boost. if I press the pedal anymore than 20% it misfires. It also acts like this during idle.
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Last edited by WhiteFury; 10-07-2013 at 04:24 PM.
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