Failed MOT? Diagnostic consultation and Engine Carbon Clean on a VW Touran (2005 – 124,503 miles)

🚗 Failed MOT on emissions?

Here’s one we dealt with a few days ago and after a Which? Trusted Traders approved Engine Carbon Clean…

✔️ PASSED on retest 🎯

Here we have a VW Touran (2005 – 124,503 miles) booked in for diagnostics and Engine Carbon Clean after being recommended to us by the MOT test centre after failing emissions test.

🔎 Initial inspection found no obvious boost or injector leaks.

📊 Initial code checks showed little of note, but live data did show it running slightly cold, taking a long time to get up to temperature and with the cabin fans turned on the temperature dropping rapidly – sign of a thermostat issue 🌡️

⚙️ On with the clean and a significant amount of bass rumble from the engine at the start a sign of levels of buildup.

ℹ️ This was likely to be worse with it potentially running cold a lot of the time and doing short journeys.

By the end was much quieter, smooth and responsive again and upon presentation for retest was a PASS and back on the road 👍

The owner can now get the thermostat done to get it running efficiently again.

☑️ Full Diagnostics
☑️ Engine Carbon Clean
☑️ Safety first, fully insured, IMI Certified and Which? Trusted Traders approved.

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