Ah ha! This is almost certainly my problem..

allen22 · Post by **allen22** » Wed Jul 12, 2006 9:02 am

I was reading through the manual trying to find a solution to my missing, rough reving problem with my MSII and EDIS6 setup. It appears that I installed my plug wires following the 1-6 numbers on the coil pack itself thinking that they were the firing order of the coil pack. According to the manual:

On a 6 cylinder engine, the coils in a 6 terminal pack fire ABC (left to right with the connector on the bottom). Coil A fires first and should be connected to cylinder #1 and its complimentary cylinder. The coil B should be connected to the cylinder that fires after #1, and its complimentary cylinder. the remaining two cylinders should be connected to coil C.

So, I'm excited to get off work and try the proper plug wire config., should make all the difference in the world.

Will I need to reset my trigger offset now too since although I was clamped (timing light) to the number 1 plug wire that wire was actually connected to the number 3 (I think) coil pack tower?

Fred

mops · Post by **mops** » Wed Jul 12, 2006 12:57 pm

yes, you will definitely need to recalibrate your crank trigger.

word of warning.
I came across some posts that eids6 outputs are actually ACB not ABC as per megamanual. I would investigate this before attampting to run the engine.

allen22 · Post by **allen22** » Wed Jul 12, 2006 1:08 pm

mops wrote:yes, you will definitely need to recalibrate your crank trigger.

word of warning.
I came across some posts that eids6 outputs are actually ACB not ABC as per megamanual. I would investigate this before attampting to run the engine.

Interesting, I wonder how best to test that?

Fred

mops · Post by **mops** » Wed Jul 12, 2006 1:10 pm

I'm not sure, I dont run EIDS, I just came across some thread here that was stating that. possibly check out bmw success stories... i think it was there...

allen22 · Post by **allen22** » Wed Jul 12, 2006 1:40 pm

Here's a post confirming what you said:

http://www.msefi.com/viewtopic.php?p=12 ... der#124792

This is the first I've heard of this, thanks for bringing it up. Can anyone else confirm that the megamanual is wrong?

Fred

jsmcortina · Post by **jsmcortina** » Wed Jul 12, 2006 1:46 pm

It depends on how you wire between your EDIS module and coilpack!

James

PSIG · Post by **PSIG** » Wed Jul 12, 2006 2:52 pm

The coilpacks are very flexible - all you need is to have the sister cylinders paired and on one end or the other of the correctly assigned coil. In this case, if I can assume a 'standard' firing order of 153624, the sister pairs are 1/6 on coil A, 5/2 on B, 3/4 on C. You can then wire the coils in any physical order as long as they actually fire in the correct order.

In this case, a fender mounted coilpack would very neatly feed the six cylinders if the coils were arranged (wired) vertically ABC top to bottom with the wires spreading like uncrossed spider legs. The plug wires would attach as follows:

1A6
2B5
3C4

but will still actually be firing the 153624 order. Cool, eh?

FWIW,
David

Wait - spiders have 8 legs. I guess it's a tick...

allen22 · Post by **allen22** » Wed Jul 12, 2006 4:28 pm

jsmcortina wrote:It depends on how you wire between your EDIS module and coilpack!

James

I have mine wired according to the manual and just noticed that I read the manual wrong. I thought it said the firing order was ABC but it clearly says ACB! So, I swapped plug wires to the correct locations, double checked that I had it wired correctly on the plug and guess what?

Now it really runs bad!

I barely got it started even after setting my trigger offset back to 0. Once I finally got it started and idling I tried to check my timing w/ a light and I can't even see the timing marks! What do you think I should do now, it runs poorly, pop, misses, etc?

thanks for any advice, I'm so frustrated!
allen

allen22 · Post by **allen22** » Wed Jul 12, 2006 4:38 pm

Here's a pic of my actual install. My firing order is 123456.

http://www.engineswaptech.com/photos/vq ... 0x375.aspx

Thanks,
allen

allen22 · Post by **allen22** » Wed Jul 12, 2006 5:01 pm

Upon further re-reading it looks like I may have wired up my coil pack backwards, have a look:

http://www.engineswaptech.com/photos/vq ... 0x343.aspx

It seems that I wired it based on looking into the coilpack plug instead of the wiring harness plug....

Is it even possible that it would run like this with 12V coming in on the left most pin instead of the right most pin?

thanks
allen