Warning Worn Tappets Can Cripple Your HPFP

... out of 10 this is what takes out the CP4.2. We recently stopped ... Excessive wear of both the roller tappet and cam occurs rapidly at ... turned out to be severely worn check valve seats that no longer sealed correctly. I replaced mine with a reman unit the local diesel ... Be advised, this HPFP can leak internally and dilute the engine oil. The symptoms will be hard starts after shutting down a hot engine for ... The reason for the new buckets failing is that the same friction that eats away at the bucket usually damages the surface of the cam lobe. - ... Fuel pump, fuel filter, plugs & wires high pressure fuel pump, injectors.. ALL HAVE THE SAME SYMPTOMS 😅 ... behind the engine, and then retrieve it. I mounted it ... They pointed the noise to HPFP area too and ruled out adjuster tentioner valve ... How to inspect/replace the HPFP's lifter bucket on Gen2 Nissan Armada (2017+) & Infiniti QX56 (2011-2013) & Gen1 Infiniti QX80 (2014+). Pokemon Filter Gen 5 behind the scenes! #pokemonfilter ... But the high pressure fuel pump does have to come out. because I ... If it's blocked, maybe Brakleen or Gumout, something with solvent and pressure. If it's open and simply being maintained, I'd imagine regular canned air would ... (2) The high-pressure fuel pump supplies insufficient oil to the injector. The reasons are the wear of the plunger coupling, the breakage of the ...