Audi A4: High-pressure fuel pump cam follower wear (2.0 TFSI)

The high-pressure fuel pump on the EA888 2.0 TFSI is driven by a dedicated lobe on the exhaust camshaft via a roller follower (cam follower bucket). The roller can shed its pin under high mileage or with thin/degraded oil, causing the plain metal follower to score and collapse against the camshaft lobe. Once the lobe is destroyed the HPFP delivers no rail pressure, causing a no-start or severe fuel cut. If caught early only the follower needs replacement; a destroyed cam lobe requires cylinder head or camshaft replacement.

• Fuel pressure fault codes (P0087 low rail pressure, P0193)
• Engine hesitation and flat spots under load
• Hard starting or extended crank before start
• No visible external symptoms until catastrophic

1. 1

   Inspect the roller face for scoring, pitting or a shed roller pin.

2. 2

   Inspect the corresponding camshaft lobe through the follower bore with a torch.

3. 3

   This is a 20-minute pre-purchase inspection step.

4. 4

   Check service records for follower inspection or replacement, and confirm oil specification meets VW 502.00.

5. 5

   If a workshop inspection is possible: Remove the HPFP (four bolts) and pull the follower from its bore.

Parts involved: High-pressure fuel pump.

≈A$280 to ≈A$2,760 at independent workshop rates, shown as an approximate guide in Australian dollars. That is for this job on its own, not for the car.

An estimate, converted to Australian dollars, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “Has the HPFP cam follower been inspected or replaced?”
• “What oil specification and change interval has been used?”
• “Are there any stored fuel pressure fault codes?”

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.