Have a pressure pro 5.5, 3500 unit. unused for about a year. Unloader was leaking so I replaced it with a AR vrt3-310ez 4500 unloader. Have replaced pressure switch for the burner, new hoses. Noticed water in oil so I replaced packings and seal. Changed oil and fired it up, still have water getting in oil. Also trying to adjust unloader, can only get 2600psi and if I tighten down more, it just increases the spike pressure. The pistons were replaced about 2 years ago. Any ideas? Could the belts cause this? Original belts with 894hrs. Honda gx630 engine
