Andreas Zagel

I ask this since I own a VW FSI engine with GDI. Since this is a simple bucket type follower on the HPFP, replacement is suggested every 30K miles due to the potential consequences of if it wears thru.
The M276 with GDI has a better roller design for its cam follower and appears to last longer.
Is there a recommended inspection/replacement interval for this follower?

CaliBenzDriver

It's amazing to read what VW does to make their cars fall apart predictably.

My answer to your question would be around 80 to 100kMi more so that around 120kMi - You want to prevent camshaft damages that will waste new roller. Obviously this depend on driving and oiling conditions.

-- Our MB HPFP roller is built with needle bearings. That's s great!

-- It rolls over 3 or 4 lobes according to engine turbo vs. NA and single or twin independent pumps.

-- The stressor is the engine low oil delivery under limited cooling. These conditions affect the pump shaft that becomes harder to shift and cause the roller to develop a flat. The seized pump kills its roller.


-- Definitely at least replace your roller(s) when HPFP is removed to replace the PCV cover around 80kMi.

I don't know the projected lifespan of HPFP... maybe be good idea to replace as part of PCV job kit.

1. PCV diaphragm cover
2. PCV plastic conduits
3. HPFP 3000.Psi pump
4. HPFP Roller

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