We had a mantra when fixing Citroens, that it was always best to get it to work right in its original, then make modification. This starting issue seems more to do with fuel delivery than glow plugs right now. I checked the glow plugs yesterday with ohmeter and they all have continuity. This morning when I went to start, I reached under the dash and gave the relay a flick of the finger and the light came on. Even so, my hard starts come either hot or cold. I worry that it will run the battery down before it fires. In fact it let me down one day last week.
I have new filters coming on Monday. It won't take long to put them in and we will see how it goes after that.
Made progress this week. Front end is fixed. Goes down the road prefect now. Today I changed the muddy oil and filter and I put on my hitch.