Tappet Woes Identifying and Fixing Wear Behind the HPFP

... behind the engine, and then retrieve it. I mounted it ... They pointed the noise to HPFP area too and ruled out adjuster tentioner valve ... The vehicle in the video is an Infiniti M56. No intake manifold removal required, no fluids spilled. The High pressure fuel pump lifter ... I have a 6gen Camaro Ss with a blower, lt4 pump/injectors and a built bottom end in the shop. Car was previously built and tuned elsewhere. How to inspect/replace the HPFP's lifter bucket on Gen2 Nissan Armada (2017+) & Infiniti QX56 (2011-2013) & Gen1 Infiniti QX80 (2014+). ... 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 ... check out your high pressure fuel pump. and here's the big test. it actually shuts off. when you turn the key off. 27 Likes, TikTok video ... Yes, the HPFP is driven by a separate lobe on the cam. It's located on the passenger side valve cover. It's normal for HPFPs to make an audible ticking/ ... 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 ... 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. - ... (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 ...