So I've got a prebuilt MJ (not home soldered) running an Edis 8 with two coil packs (RV8).
Been running flawlessly since installation and initial trouble shooting (had a loose connection on the live feed to the EDIS). All sorted.
A couple of weeks ago during the MOT the garage could not start the car - to the point they flattened my battery.
A quick removal fo the filter showed it was fuelling but zero sparks. I wiggled all the wires under the dash (it's a westfield) - no change. Wiggled all the leads into the EDIS - no change. All the while I have all ignition lights on, MJ LED is on, just zero sparks.
Then I crank her over after chatting with the guys for a minute and she fires up and runs perfectly. She wasn't hot (being MOT'd).
Since then I've had either random mini-cuts where I love total power instantly, then it comes back - it can be quite violent if you are coasting with a powerful engine in a light car! It seems to show itself either when coasting in traffic on a very light throttle, or on hard overtaking.
Then in a car park it refused to start again after shopping. And then started of it's own accord after a while.
Each time it's 100% no spark at all but all lights are on - dash and MJ.
Last week I undid all the joins by the EDIS and resoldered every single wire - carefully - I'm a good solderer. I checked the plug pins - they all look ok.
She still does it here and there. I drove into town yesterday, all perfect, then 3/4 of the way home, after going over some speed bumps the problem came back. Near home I had a total cut out. I stopped and tried to crank her - no spark at all.
I got out of the car. Cranked again. Nothing. I popped the bonnet off (with a view to wiggling wires) - touched nothing - pressed the button and she fired up immediately. The Only thing that can change when I take the bonnet off is the EDIS can move 5mm in one direction as it touches the bonnet lip.
Obvious you then think - but no. I can get her running and wiggle, tug, pull every single wire, every joint, wiggle the edis itself, and I just cannot replicate the problem at adle at home. She runs without a hiccup, yet, on one occasionan oafter doing this, as soon as I set off she was cutting out quite badly.
Other days I get almost fault free drives.
I've even wiggled the CPS lead, I've jiggled the CPS itself. Nothing I do will make her cut out - unless I'm driving!
I'm at a loss. Any ideas? Is there something I can do with my laptop to help diagnose it?