Hi Dieselgman, yea, I could make one on my lathe, but need a pattern or an old injector to do so. I am reluctant to start any kind of teardown until I have the tools necessary to do the tests. As Murphy's Law says, as soon as I start a tear down, then the power goes out, and I don't have a genny running. Yes, it is a 6 pole alternator. This unit was made to run 24/7/365, even though it was only ever used for a back up. Yea, if you have a test injector for the HR4, I would love to borrow it, or even buy it. If I had an old injector, I could retrofit it to connect to a pressure gauge. Thanks, Derek.