What balu1 has to say is true. I've build two gas turbine liquid fuel nozzle testers which have worked beautifully. Here's what I did. Contructing the tester around a small electric motor driven gear pump (industrial gas turbine, positive displacement) and a tank (40-60 gallons), the test fluid...
I saw the same video when I was in the Air force about 40 years ago. Have you tried looking on the Web? It's surprising what's available out there.
Regards,
turbotec
Before you start tearing the engine apart, take a good look at your relief valve operation, fuel valve scheduling,
blockage at the inlet (collapsed filter elements, etc.).
If all is OK, suggest a borescope inspection of the compressor and hot gas path sections.
TurboTec