⚠️ Service or MOT due, or just not seen us for a while? Get in touch to get it checked out and cleaned up in advance.
Here we have a VW Touran 2.0 TDI (2005 – 201,289 miles) booked in for diagnostic consultation and Engine Carbon Clean after it was getting poor fuel economy.
Initial inspection found a wobble at idle linked to both engine mounts and dual mass flywheel. Also a smell of fuel in the engine bay and a little bit of sitting fuel indicating a potential leak around the fuel rail. No obvious chuffing noise from the injectors though and when revved no obvious sign of additional fuel so we proceeded carefully.
Initial diagnostics showed an engine code for glowplug 2, plus a couple of other bits and pieces in other sections of the car including the A/C pressure sensor.
Live data monitoring showed the engine coolant at 97°C (thermostat OK) and all other data within limits. Injector 4 was fuelling higher than the others, but given the wobble at idle this could easily be a symptom of that.
On with the clean and the engine soon smoothed out and quietened down and by the end it was quieter, smooth and responsive again.
The owner now has a list of bits to get resolved when serviced.
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