Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 – 116,100 miles)

⚠️ Just bought a vehicle?

🚗 Here we have an Audi A6 2.7 TDI (2006 – 116,100 miles). The owner bought it recently and wanted to get it checked out and cleaned up before putting too many miles on it.

🔎 Initial inspection found little of note in the engine bay with no obvious rattles or signs of engine mount wear.

💻 Initial diagnostics showed lots of historic codes which we documented for the owner. Once cleared the active codes reappeared indicating all 6 glowplugs (likely the controller/relay), driver heated seat and an issue with the tailgate lock.

📊 The live data showed temperatures up to normal levels, EGR movement and flow typical, injector fuelling within tolerances and fuel pressures normal.

👨‍🔧 The 2.7 and 3.0 TDI engines don’t seem to suffer as badly as the 1.9 and especially the 2.0 TDI, but even so there was a distinctive bass note present which dissipated and by the end it was quiet, smooth and responsive again.

Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)
Diagnostic consultation and Engine Carbon Clean on an Audi A6 2.7 TDI (2006 - 116,100 miles)

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