I am looking for help with my 1995 RRC 3.9L with 144,000. The problems started with ignition system, missing, no spark etc. I replaced distributor pickup plate, coil, cap, rotor, wires, plugs, ICM etc... After replacing those part and setting the timing the vehicle was still not running as smooth as it was before problems. I finally broke down and went to independent land rover mechanic in town. They did a smoke test and found a couple vacuum leaks. They cleaned plenum, replaced gaskets in and around intake manifold we also replaced the fuel pressure regulator, new fuel filter and replaced just the fuel pump and pressure was about 30psi. It ran but would take awhile to start after setting for awhile. so I ordered a new fuel pump with housing, sending unit from Lucky 8 offroad https://www.lucky8llc.com/collections/fuel-pump-4/products/new-fuel-pump-kit after installation of second pump we would get 40psi only with the fuel pressure regular unplugged and capped and truck ran fine for about two weeks and now I am back to no starting and about 20psi when cranking and then bleeds down quickly. I have also tried a 3rd pump, a 340 LPH 0-100psi Hi flow pump, new tank seal with same results, no starting and about 20psi when cranking and then bleeds down quickly. Fuel injectors were replaced in 2008.