Well the replacement DIS pack is now fitted and the engine itself is at last running well

However, according to the local exhaust specialists who have now inspected the system, one of the middle exhaust boxes has blown (probably due to the misfire), with a "bulge" on top and will be replaced for £118 once I have the money next week, with an MOT thereafter! The professionals can do that job!
Although I scratched my arms to buggery again, you can see the void where the old DIS pack was. As a point of interest, you will note I did not have to remove the wiper motor, but on the advice of TB it really helped taking the cables out of the plastic tray and moving all out of the way with greater flexibility.

:

The old DIS pack was definitely the problem!:

............and the replacement (a Bosch) about to be installed:

Overall this exercise was VERY satisfying and took a relatively short amount of time.

I just wish I had replaced the DIS pack with the replacement spark plug leads all in one go.
How many times I have stripped the bits off the top of the engine over the last few days I have lost track, to add to all the numerous previous occasions. I reckon I could now do it all blindfolded!!
Thanks for all the useful comments I received

I know one thing, without the OOF and associated diagrams / advice / maintenance guides, I would not have had the confidence to complete this work

I was 'trained' of Austins, Morris's and early Fords, not the 'new' nightmare cars with multiple leads / pipes / sensors everywhere, and the blessed plenum in the way. On the older cars I could strip and engine and rebuild it in a day, but with these beasts you cannot even test the engine running without putting so much back before you do!

But we love the Omega really!
