BMW E92 2009

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STC
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Re: BMW E92 2009

Post by STC »

RS
Just before you put a new injector on it would be an idea to confirm that it isn't commanded to do that. An amp clamp will give you that in 2 minutes.

I had a Audi RS6 some years ago that would throw / spray petrol out of the exhaust (cats cold) about 2 metres, that was the ground side switched wire short to ground holding the injector open.

Low compression could just be bore wash but I see 2 cylinders low ??

Your primary is still looking messy. It just came to mind that BMW do fire the Coils 3-4 times with the piston on power stroke only at idle, have seen it myself. Think they call it Multi Strike ? Could be wrong.
Last edited by STC on Thu Sep 29, 2016 11:28 am, edited 1 time in total.

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PicoKev
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Re: BMW E92 2009

Post by PicoKev »

STC wrote:Think they call it Multi Strike ? Could be wrong.
Well Ford in the US certainly have done for several years!

It is spreading to numerous manufacturers nowadays especially as a start-up strategy. BMW is certainly using it in several market areas.

If anyone has several hours to spend on PD then "Google & Go". :lol: A reasonable starting point can be found here :arrow: http://dtec.net.au/Multi%20Spark%20Ignition.htm

Kev.

victor2k
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Re: BMW E92 2009

Post by victor2k »

RS-4 wrote:Hi guys


Here I am again. I'm still fight with BMW. Mounted the new coils and spark plugs but without success...


Then I made a test injectors and finally ...


As soon as I mounted the new injector I will continue with waveforms.


I also saw that compression is not good but we'll see how it will work with the new injector.
Try to record injectors curent(at the ECU side) and maybe you will see something like a shorted coil of injector.
You can't see any trouble monitoring primary voltage in this case
Last edited by victor2k on Wed Dec 28, 2016 11:09 am, edited 1 time in total.

RS-4
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Re: BMW E92 2009

Post by RS-4 »

Hello
just to say I am now finished with BMW. I am replacing the injector cyl.1, all COP and spark plugs. The engine works quite well but I noticed that the mixture is still rich in bank 1. STFT came down from -25 to -5 and here are stuck and lambda is to highly, that's why I gave the car owner to drive a few days.

I recorded waveforms of injector no.1, primary and secondary ... see that COP transferred from Multi spark system to the ordinary spark system ... why ... I don't know.
Also injector waveform is not well known to me. The direct injection system has a strange injector waveform.
Unfortunately, many waveforms from this car is confuse for me.


Thank you all for advice and assistance.

Regards
Attachments
IMG_20160926_101013691.jpg
VID_20160927_150241321.mp4
(22.74 MiB) Downloaded 203 times
All coil + primary cyl.1 1MS.psdata
All coil + primary cyl.1
(1.07 MiB) Downloaded 237 times
cop orange.psdata
Secundary cyl1
(3.88 MiB) Downloaded 227 times
Injector cyl.1-ok.psdata
Injector cyl.1 curent+voltage
(1.18 MiB) Downloaded 248 times
mixture
mixture

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STC
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Re: BMW E92 2009

Post by STC »

Change the Oil & Filter - the sump will be full of HC's

RS-4
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Re: BMW E92 2009

Post by RS-4 »

Hei,

I did that the oil level was 73mm and after replacement 67mm.

Thanks for the advice
Attachments
IMG_20160926_110756296.jpg

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STC
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Re: BMW E92 2009

Post by STC »

Hi RS 4
We get lost with translation sometimes.

You changed the Oil and Filter?
Did that fix the Fuel trims ?

And that fault code, was that due to the Petrol Diluted Oil ?
that COP transferred from Multi spark system to the ordinary spark system ... why ... I don't know.
I would guess that it warmed up, Multispark tends only to be used for cold start up and then only at idle. I would imagine that there would not be enough time to re charge the coils at higher RPM's

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