how to change glow plugs on a 1994 rover metro?

They simply unscrew like a spark plug only smaller.
i have not done it on a metro but may be 3 or 4 plugs.
Spray with WD40 first even the day before as they can be tight.
use a ring spanner or socket if possible as you dont want to round them off. They will also have a small wire bolted to the end of each so take that off first. I test mine on a battery charger to see if they glow. Should only cost £25 ish for four.

Bodger & Badger
April 2007