Finally got around to getting the crankshaft position sensor out of the 214 today, with the help of some dinky flexible head ratchet thingies. Twat of a place to get access to, and very undignified in getting it out with both feet off the ground and much stabbed wrists/arms - the new qualitee tools worked spendidly.
I'd heard horror stories of the main plug (which has a magnetic tip on it and is next to the flywheel, with two cutouts at 180 degrees, thus the position reading) refusing to come out, but it popped out perfectly.
Trying to fit a non-OE replacement, however, was not so straightforward. It was clearly something like a zillionth of an inch out because it simply did not fit, no matter what I did.
Sighed to myself, cleaned up the old one (covered in little engine shavings), popped it back in.
Took it for a razz and running a lot better, not sticking at 2000rpm. Of course the proof in the pudding was, would it restart, as a failing CPS hates a hot engine. First time, no bother. Two minutes later, struggled a bit but then fired. So a slight improvement, but still not a guaranteed win.
Will get a proper OE one from Rimmers and replace again.
Also have to work out what is sapping the battery - something is (my bet is the boot light) as the battery was down to 10.8V, which ain't good at all. Luckily my conveyor belt of ready charged 063 batteries had a willing replacement.
Hoping this week to get it up on a lift at local garage, to see if the rumbling/resonance/vibration below 2000rpm is just the exhaust and nothing more sinister.