On my truck i was able to remove the high pressure output hose and install a tee with a pressure gauge and watch my pressure, should have around 900 psi at idle and around 3000psi at wot . Fittings are #6 jic . Make sure u get all fitting tight lots of pressure there. Fittings and gauge are available at hydraulic supply stores . I believe if you took your truck to a international dealer they they can put your truck on a scanner and drive it and watch pressure's
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