Plug lead order..............

[Hedgehopper]

I'm hoping that someone can help me here.

I know how to check plug lead order from a distributor but how do you check it with coil packs?

I've got a Canems ECU with 8 coil packs and recently I had to remove the plug leads from the coil packs. I'm not 100% convinced that I've put them back correctly. The fact that they are batch fired makes me even more confused (not difficult at my age!).

Advice will be most appreciated.

[carsy]

Depends how your ecu is configured. Each of the 4 spark drivers will go in a particular order and each one will fire 2 coils at the same time. Only one spark will be utilised tho hence the term wasted spark.

You need to identify each spark driver wire on the ecu connector plug and trace it up to the coils. You will probably need instruction paperwork that came with your ecu to identify the correct wires in the connector.

You could ask Canems themselves if you dont have paperwork they will probably configure all RV8 ecus the same.

Ive scribed on my coils which cylinders they serve for this very reason. Hope that helps.

Edited by carsy on Tuesday 5th June 03:41

[Hedgehopper]

Thanks Carsy for the info. I will do as you suggest and contact Canems first.

[Penelope Stopit]

Is this of any help? https://www.lloydspecialistdevelopments.co.uk/wp-c...

[carsy]

Perfect.

[Penelope Stopit]

carsy said:

Perfect.

All is good then, I was clutching at straws and am not that lucky when backing horses

[drlloyd]

Note: always check the HT leads line up with the corresponding wire for the correct ignition output. Sometimes the ignition coil-pack will be orientated 180 degrees, changing it from the exact order shown in the diagram. So for example - the grey/red wire on the 3-pin coil-pack connector should line up with the ignition coil posts for cylinders 2 and 3.

Not a lot of point in contacting Canems - we are the sole supplier & installer for the Canems engine management system on the Rover V8.

[Penelope Stopit]

drlloyd said:

Note: always check the HT leads line up with the corresponding wire for the correct ignition output. Sometimes the ignition coil-pack will be orientated 180 degrees, changing it from the exact order shown in the diagram. So for example - the grey/red wire on the 3-pin coil-pack connector should line up with the ignition coil posts for cylinders 2 and 3.

Not a lot of point in contacting Canems - we are the sole supplier & installer for the Canems engine management system on the Rover V8.

Hello, would you like me to delete my above post and link?

[drlloyd]

No, why?

[Penelope Stopit]

drlloyd said:

No, why?

For some reason or other, many people/companies aren't happy with their information being posted here or elsewhere
This is why I linked to the file to show where it came from

[Hedgehopper]

Thanks chaps for the info. The diagram explains it all and am relieved to see that I have in fact put the leads on correctly.

All I want now are some snap on plug lead numbers but they seem rather elusive.

Thanks again.

[Steve_D]

https://www.ebay.co.uk/itm/8mm-HT-Lead-Cable-Clip-...

https://www.ebay.co.uk/itm/1-Pack-8mm-Cable-Plug-L...

Steve

[eliot]

Worth noting that it's possible to arrange the wiring and leads so the HT leads on the right side of the pack connect to the right cylinders and the left side to the left bank and approx front to back:

Pack 2:
Green Wire - 8 & 5
Yellow Wire - 4 & 7
Pack 1:
Red Wire - 2 & 3
Black Wire 6 & 1

(well you can with edis coil packs, dont see any difference here)

Here's the same idea applied on my chevy which has the same firing order:

Edited by eliot on Wednesday 6th June 18:51

[drlloyd]

eliot said:

Worth noting that it's possible to arrange the wiring and leads so the HT leads on the right side of the pack connect to the right cylinders and the left side to the left bank and approx front to back:

Pack 2:
Green Wire - 8 & 5
Yellow Wire - 4 & 7
Pack 1:
Red Wire - 2 & 3
Black Wire 6 & 1

Edited by eliot on Wednesday 6th June 18:51

That's worth knowing when wiring them up, thanks.

[Hedgehopper]

eliot said:

Worth noting that it's possible to arrange the wiring and leads so the HT leads on the right side of the pack connect to the right cylinders and the left side to the left bank and approx front to back:

Pack 2:
Green Wire - 8 & 5
Yellow Wire - 4 & 7
Pack 1:
Red Wire - 2 & 3
Black Wire 6 & 1

(well you can with edis coil packs, dont see any difference here)

Here's the same idea applied on my chevy which has the same firing order:

Edited by eliot on Wednesday 6th June 18:51

Surely in the Canems diagram the even numbered leads do go to the o/s bank and odd to the n/s bank?


I'm probably being a bit dim here, could you explain further.

[ianwayne]

On many ECU conversions, the HT coils are mounted as follows (not my car):



In this case, if you have some of your HT leads a bit too long, you could route one around the pack body to either bank as required. Some may want to do it to reduce lead crossover.

The leads may also have been connected in the firing order 1,8,4,3,6,5,7,2. Since it is a wasted spark system, the leads can be swapped over between the pairs (1,6) (5,8) (4,7) and (2,3) without issue. I did this on mine trying to trace a misfire which turned out to be an extender.

[eliot]

Hedgehopper said:

Surely in the Canems diagram the even numbered leads do go to the o/s bank and odd to the n/s bank?


I'm probably being a bit dim here, could you explain further.

No you are quite correct - the graphic is odd/even - I was reading the adjacent text which is mixed up.

[Hedgehopper]

Steve_D said:

https://www.ebay.co.uk/itm/8mm-HT-Lead-Cable-Clip-...

https://www.ebay.co.uk/itm/1-Pack-8mm-Cable-Plug-L...

Steve

Thanks for the links...just what I was looking for but only came across the ones you slide on before crimping the terminals.