That sounds like a plan, they are (should be) less than $10 each from the dealer. You may need a deep thin walled socket to get them in. I recall that the nuts on top were strange and had to use something (screwdriver?) to put them on.I ordered new glow plugs. It did not get hot when I pulled out to inspect. It all started when I used the glow plugs feature for the first time. I believe it must have shorted them out. Yes I had checked to see if I had flow.
Changed out plugs, pulled fuel injectors cleaned and blew out . Checked battery connections made adjustments. Cleaned ground contact to frame. Got it to run a little bit after using a whole can of ether. It would not get to full throttle. Still sounds like a fuel issue. I need to go get some fresh diesel. I did open up the throttle body to inspect, I did notice there is a spring attached internally. Liquid in there was black.That sounds like a plan, they are (should be) less than $10 each from the dealer. You may need a deep thin walled socket to get them in. I recall that the nuts on top were strange and had to use something (screwdriver?) to put them on.
I hope they get you going again.
Please post back the results.
^^^^^^Got it to run a little bit after using a whole can of ether.