[Vwdiesel] More Quantum Questions?

[William J Toensing]

Thank you for your suggestions. 1) Pulled the glow plugs, found 3 good ones & one dead glow plug, the one closest to the front, or the # 1 glow plug. The 3 good ones tested between 5 & 6 ohms. However, since I had bought 4 new glow plugs from The Parts Place when I was in Mich. for the Hudson Centennial meet I decided to install the new ones although the 3 "good" glow plugs did glow nicely.  How long do these glow plugs last?Wonder if they will interchange with my Mercedes 300SD glow plugs, if any are bad? Haven't checked the Mercedes glow plugs yet as the Quantum is taking priority.
In respect to starting, it was difficult to start even if I immediately tried starting it after turning it off while hot. However, I did find a copper washer missing from the IP outlet to the return line but no signs of leakage. However, I found an extra copper washer for the outlet banjo fitting so there is now a copper washer. I will also replace the return lines between each injector. 
I would like to test the injectors but wonder if there is a good tool I can buy to do this with, that can be bought reasonably. I also recall reading about a tool that picks up the pulse on an injector that is similar to a timing lite on a gas engine, for use in fine tuning the timing. Any comments, cost?
I did remove all the injectors except  the # 2 one to get easier access to the glow plugs. I consider the # 1 glow plug to be at the front (cam belt side) of the engine. I also found the #2 glow plug difficult to remove & disconnected the cold start cable to gain access to re install the #2 glow plug.
Now that I have all but the #2 injector out, would it pay to squirt carburetor cleaner into the injector  & blow it out with compressed air? Or could this damage the injector? Should I replace the injector washers like the Bentley manual suggests? I think I recall in a previous discussion a way of salvaging the injector washers.
Bill Toensing, Nevada City, CA