Mc2 misfiring

[Dag Bøsterud]

I don't have one coil pr cylinder. I have one coil for all cylinder with a 
distributor..
Could the regular coil do this?

/Dag

----- Original Message ----- 
From: "Cody Forbes" <cody at 5000tq.com>
To: "Dag Bøsterud" <dag.boesterud at consulgranada.net>
Cc: "Tony Lum" <tlum at flash.net>; <quattro at audifans.com>
Sent: Friday, July 02, 2010 7:28 PM
Subject: Re: Mc2 misfiring


I've had failing ignition coils act like that sometimes.

-Cody (mobile)

On Jul 2, 2010, at 12:05 PM, Dag Bøsterud <dag.boesterud at consulgranada.net> 
wrote:

> I forgot to mention - I replaced my injectors last fall. Brand new Bosch 
> injectors, including seals and that brown plastic thingy.
> Spark plug wires and spark plugs are less than one week old.
>
> /Dag
>  ----- Original Message ----- 
>  From: Tony Lum
>  To: Dag Bøsterud
>  Sent: Friday, July 02, 2010 5:54 PM
>  Subject: Re: Mc2 misfiring
>
>
>        When I had problems with misfiring, it turned out to be spark plug 
> wires.  Try another set.  Also check to see that your injector seals are 
> good and that the injectors are fully seated.
>
>        HTH,
>
>        Tony
>        '83 ur-quattro
>
>        --- On Fri, 7/2/10, Dag Bøsterud <dag.boesterud at consulgranada.net> 
> wrote:
>
>
>          From: Dag Bøsterud <dag.boesterud at consulgranada.net>
>          Subject: Mc2 misfiring
>          To: quattro at audifans.com
>          Date: Friday, July 2, 2010, 8:41 AM
>
>
>          I've had some problems with my 1990 Audi 100 TQ (MC2-engine) 
> misfiring.
>          I thought I had solved the problem when I found a ruptured hose 
> and a broken hose clamp, but no.
>          I then discovered the car running very lean, so I disconnected 
> the OXS and adjusted the CO%.
>
>          The car pulls very good at 0,6 bar all the way through the entire 
> rpm range now in all gears.
>
>          I switched for a stiffer WG-spring, and the car started to 
> misfire again. Not as bad as before, but
>          I could feel the that something was happening. It's not like a 
> kangaroo anymore, but I can feel that it's
>          small misfires.
>          The car is probably leaning out.
>
>          The fuel pump is brand new, I've replaced the OXS (one year ago), 
> I've replaced all sensors except for the
>          air temp sensor and hall sensor, I've replaced like ten metres of 
> rubber hose (!!) using new hose clamps...
>
>          The car has an ECU with a chip from MTM.
>
>          I get no fault codes.
>
>          Could there be something wrong with the ECU or chip?
>          Could there be something wrong with the fuel metering device, so 
> the that it can't adjust to more or less fuel like the OXS and ECU would 
> like it to?
>
>          Any help would be greatly appreciated.
>
>          /Dag
>          1990 Audi 100 TQ Sport Exklusiv
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>
>
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