Battle-Tested Diesel Generators and Parts › Forums › Military Generator Troubleshooting › Fluxuating Hertz and voltage under load. › Reply To: Fluxuating Hertz and voltage under load.
KarenWhat is the brand of the fuel injection pump? Just curious… Are you using JP8 fuel?
Sounds like the fuel injection pump is wearing out. When load is applied and hertz drops significantly, the inj pump is failing. Try to be there with an amp probe when it happens, just to insure that its not something going on with the load downstream….If your AC units are Alaskan type – they can reek havock when they are over charged with Freon, because the compressor has an internal check valve…