Can anyone help? ‘04 facelift MG ZT T 2.5l KV6 Non Start.

[Timefortea23]

Originally Posted by Pete

I'll say now that I don't really do electrics, but have you checked the ECU isn't drowning in a blocked plenum?

So I've taken out the ECU. The bottom of the plenum seemed a bit damp, but not full. I'll clear out the drain and put the ECU in the airing cupboard for a few hours to see if that dries anything out. Image of the plenum below.