Tappet Tribulations Overcoming Wear in HPFP Systems

... 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 ... Pokemon Filter Gen 5 behind the scenes! #pokemonfilter ... But the high pressure fuel pump does have to come out. because I ... Stock Problems/Issues - N14/N18 High Pressure Fuel Pump teardown and refresh - Hello, I just had my HPFP begin to fail with 61000mi on the ... I bought a 2015 X5 35d out of the CPO program at the end of May 2019. ... valve on the HPFP) may have failed instead. It would have been easy to ... I have a gas leak at the connection of the High Pressure Fuel Pump and high pressure fuel pipe. Gas drips and sprays out from the nut area. Remove the high pressure fuel pump roller lifter. ... The plunger can easily be pulled out of the bore hole to inspect it for wear. The reason for this is aftermarket pumps use much stiffer springs, which massively increases the forces exerted on the tappet, wearing it out ... it took about an hour but the one that came out had no wear on it what so ever. ... now i dont expect those lads to hide behind the corporate ... On my 2018 the bolts that hold the HPFP down have sheared off TWICE now. First time was about 200 miles ago, and about 2k after the cam phaser ... ... out gets closed before it can “preload” more fuel. So while ... There is a lifter that is used between the HPFP and the lobe on the cam.