Decided to do the plugs etc this bright and shiney day. Did the plugs on the first easy to get at bank no worries.
Fired it up, ran great. Undid the AFM, lifted it carefully out the way, and swapped the second set. Decided to do all the leads while the AFM and the LPG coolant pipes are pulled away.
Puts it back together, won't even fire. Puts the old King lead back in, still nothing. Checked the wiring arround the AFM, nothing broken or worn through and shorting. Ended up draining the battery and having to boost it off the missus's fabia. Still nowt. put the first 4 old leads back and it wouldn't even stumble. put the second leads back on and it fired straight up. rough at first because it had been flooding for about an hour of start attempts. But weird. Why would all 8 old leads make it start spot on, but 4 old leads didn't even try to fire that bank?
not a Moan BTW, just wondering why it things don't work like you expect. I didn't bother with the cap yet.
Old plugs and new plugs where the same NGK model. Old leads were Bosch double silicon. New leads were Halfords double silicon. Same lengths, same fitting, same 7mm diameter.