Tappet Conundrum HPFP's Unsung Enemy

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 ... ... wear, Be sure to prevent your timing cover on your cylinder head from stripping, by installing our FSI High Pressure Fuel Pump (HPFP) Stud ... Car: 2008 Audi TT TFSI 2.0L Turbo So it seems I have a fuel leak on my car, I can see its leaking from the pressure relief valve on the high ... We typically always replace the gasket, (oil usually leaks if you don't, and it can run down the back of the engine and burn on the outside ... Come to find out my truck had thrown an I.C.P code: this means that I have either or both an injector or the injector supply line that is ... There is a seal behind the pump gear....it WILL leak fuel into the crank case if it fails or is installed incorrectly. So I pulled the high pressure fuel pump and as I removed it I made sure the roller follower didn't fall out... I pulled it out and then ... Took me about 2 hours and lots of spilled fuel to get those suckers all out and the injectors pulled out. ... behind me after I was 3/4 of the way ... turned out to be severely worn check valve seats that no longer sealed correctly. I replaced mine with a reman unit the local diesel ... Remove the high pressure fuel pump roller lifter. ... The plunger can easily be pulled out of the bore hole to inspect it for wear.