HPFP Tappet Wear A Comprehensive Guide to Prevention and Repair

... 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. ... wear, Be sure to prevent your timing cover on your cylinder head from stripping, by installing our FSI High Pressure Fuel Pump (HPFP) Stud ... 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. The high pressure pump sits on the valve cover and is driven by one of the camshaft lobes on the back of the head. ... High Pressure Fuel Pump out ... High pressure fuel pump symptoms - jerking and missing - almost feels like a tranny problem, but it is motor related. Starter will spin excessively before ... How to inspect and replace a FSI HPFP and Cam Follower on a MK5 GTI. The high pressure fuel pump and cam follower is a common MK5 FSI ... The revised intake camshaft ensures the HPFP cam lobe meet the correct hardness spec and does not wear out prematurely. Also, I am curious ... You might have a leaking vacuum pump seal. You might have a leaking HPFP o-ring. Or that could be "spray" coming from elsewhere, such as a ... My hpfp has ~80k miles and im concerned its getting weak. (especially with E30-40 fuel) Would a weak pump cause a lack of power or rough ... 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 ...