I'm new to these cars so not familiar with the usual suspects.
I have no spark to my right bank only, intermittantly and it will come back alive if I can coax the revs over ~3k, quite bizzare.
There is more info posted here;https://www.jaguarforums.com/forum/x...64/#post452777
Any ideas, boys?

 

The AJ26 engines (yours) has two ignition modules that each drive 4 spark coils. You might think that is an easy answer but each module drives two coils on each side of the engine. Sure that you have one bank not firing? Could it be two cylinders on each side?

Obviously got it started. What was the problem?

It would help if you would put your car info into your signature or somewhere. Without going to the link no one would know what car you were asking about.

 

Sig fixed.
I am not the OP of the other thread
Disconnecting all four injector connectors on the right bank makes zero difference, the injectors can be heard to fire when connected. This is how I reached my conclusion. I'll try the other side to see what happens.
It currently has no fuel pressure, power to FP fuse.
I'm about to commence further diagnosis.
Would you tell me where the ignition modules are please.
Any explaination for why it would wake up at a given RPM?

 

I believe that they are mounted on the firewall but I don't have them so cannot go look.

 

Found them under the lid covering the brake booster. I don't think they are my problem, switching them made no difference.