Failed MOT? Diagnostic consultation and Engine Carbon Clean on a Ford Focus (2014 – 32,526 miles)

⚠️ Failed MOT? Get it diagnosed and cleaned up before re-test.

Here we have a diagnostic consultation and Engine Carbon Clean on a Ford Focus 1.6 diesel (2014 – 32,526 miles) after it failed the MOT with an emissions level 3 times the target value.

🔍 Initial health check found no injector issues or boost leaks, but the temperature dropped rapidly when the cabin blowers were on which would indicate a thermostat issue. A cold running engine will not run efficiently and an inefficient engine will have increased emission levels.

⛽ In addition a combination of historical short journeys and poor quality fuel had raised the emissions levels from a dirty engine.

📊 Diagnostics showed no significant issue and injectors looked good on the live data.

⚙️ On with the clean and cabin fans off to keep the engine warm and a little extra time allowed us to clean it up ready for retest.

🎯 MOT NOW PASSED – The clean alone was enough to get it through the MOT on retest the same day and once the thermostat is replaced and some better fuel is in it then it should be back to its best.

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

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