HPFP's Silent Killer Tappet Wear - A Diagnostic Odyssey

I took the high pressure fuel pump apart trying to figure out how the diaphragms go back in Mechanic's Assistant: Okay, I'll connect you to the Mechanic to ... 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 ... The reason for this is aftermarket pumps use much stiffer springs, which massively increases the forces exerted on the tappet, wearing it out ... I'm reluctant to fork out for another "genuine" pump as as you say it may not be the problem. All the diagnostics say it's the pump though.... Biodiesel deposits may form in the high-pressure fuel pump of trucks equipped with diesel engines, according to the NHTSA. ... 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 ... This install DIY video was done with a really Awesome VW technician who has a blog http://humblemechanic.com/. Check out his blog for more ... The tapping noise attributable to the high pressure fuel pump, located on the top back of the engine on the passenger side. Pokemon Filter Gen 5 behind the scenes! #pokemonfilter ... But the high pressure fuel pump does have to come out. because I ... That ticking is normal from the engine compartment where the HPFP is located (cam-driven). On the 3.5L it should sit on the top of the valve ...