Experts warn of rising levels of AdBlue contamination

Misfuelling can result in faulty injectors where AdBlue crystalises in the inlet ports

Experts warn of rising levels of AdBlue contamination
Misfuelling is one of the main causes of cross-contamination.

Feather Diesel Services has reported an increase in the number of fuel injector faults where AdBlue has been present in the fuel system.

The cross-contamination is often a result of misfuelling the vehicle and even immediate draining of the tank may leave sufficient AdBlue behind to cause common symptoms.

A Feather Diesel spokesperson said: “Diesel lubricates the fuel system and due to incredibly fine tolerances, AdBlue, water, petrol and even poor quality diesel can lead to premature failures.

“If you discover AdBlue misfuelling, we’d recommend having the diesel pump and injectors checked, tested and flushed before damage occurs.”

Symptoms of AdBlue contamination

AdBlue crystallisation seen on a fuel injector.

  • Lack of power.
  • Smoke.
  • Fault Codes.
  • Engine management light coming on.

According to the AA, the number of AdBlue-related breakdowns went up every month in 2016 and it predicts that more than 20,000 driver could get caught out in 2017.

Traditionally used in buses and HGVs, many new diesel cars manufactured from 2016 now use AdBlue to help reduce harmful exhaust emissions.

AdBlue is a trade name registered by the German car manufacturers association, but is the most recognised form of Diesel Exhaust Fluid (DEF).

The fluid is injected into the flow of exhaust gasses where it turns to ammonia and carbon dioxide.

Inside the SCR catalyst, harmful nitrogen oxide in the exhaust reacts with the ammonia and is transformed into nitrogen and water.

For further advice and recommendations, contact Feather Diesel Services on 01422 387800.

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