What to Do If You Accidentally Add 1 Litre of AdBlue to Your Diesel Tank
- Adblue in Diesel Specialist
- 1 day ago
- 3 min read
đź“ž 07459 909935
Accidentally putting AdBlue into a diesel tank can cause serious problems for your vehicle. If you have just added 1 litre of AdBlue to your diesel tank, it’s important to act quickly and understand the steps to take to avoid damage. This guide explains what happens when AdBlue enters the diesel fuel system, how to respond, and what to expect during repairs.
What Is AdBlue and Why It Should Not Go Into a Diesel Tank
AdBlue is a liquid solution made of urea and deionized water. It is used in Selective Catalytic Reduction (SCR) systems to reduce harmful nitrogen oxide emissions from diesel engines. AdBlue is stored in a separate tank and injected into the exhaust system, not the fuel tank.
Putting AdBlue into a diesel tank causes contamination because:
AdBlue is corrosive to fuel system components.
It does not combust like diesel fuel.
It can damage fuel injectors, fuel pumps, and the engine.
It may cause the engine to run poorly or not start.
Even a small amount like 1 litre can cause problems depending on the size of the diesel tank and how soon you respond.
Immediate Steps to Take After Adding AdBlue to Diesel Tank
If you realize you have added 1 litre of AdBlue to your diesel tank, follow these steps immediately:
Do not start the engine
Starting the engine will circulate the contaminated fuel through the system, increasing the risk of damage.
Call a professional
Contact a specialist who handles AdBlue contamination in diesel tanks. Yyou can reach out to experts at AdBlue in Diesel Tank Specialist or call 07459 909935 for advice and assistance.
Arrange for fuel tank drainage
The contaminated fuel must be drained completely. This usually requires professional equipment to safely remove the mixture without damaging the vehicle.
Flush the fuel system
After draining, the fuel system should be flushed to remove any remaining AdBlue residue.
Refill with clean diesel
Once cleaned, refill the tank with fresh diesel fuel.
What Happens If You Start the Engine After Adding AdBlue
Starting the engine with AdBlue in the diesel tank can cause:
Corrosion of fuel system parts
AdBlue’s urea content can corrode metal components like fuel pumps and injectors.
Fuel injector damage
Contaminated fuel can clog or damage injectors, leading to poor engine performance.
Engine misfire or failure to start
The engine may run roughly or stall because AdBlue does not burn like diesel.
Costly repairs
Repairing or replacing damaged fuel system parts can be expensive and time-consuming.
How Much Damage Can 1 Litre of AdBlue Cause?
The extent of damage depends on:
The size of your diesel tank (smaller tanks are more affected).
Whether the engine was started after contamination.
How quickly you take action to drain and clean the system.
For example, a 1-litre AdBlue spill in a 60-litre diesel tank causes about 1.6% contamination. This might not immediately damage the engine if the vehicle is not started and cleaned promptly. However, if the engine runs, even this small amount can cause corrosion and injector problems.
Professional Cleaning and Repair Process
When you contact a specialist, they will typically:
Drain the entire fuel tank
Removing all contaminated fuel and AdBlue mixture.
Flush the fuel lines and injectors
Using cleaning agents to remove any residual urea.
Inspect fuel system components
Checking for corrosion or damage to pumps, filters, and injectors.
Replace damaged parts if necessary
Fuel filters often need replacement after contamination.
Refill with clean diesel
Ensuring the system is free from contaminants before restarting the engine.
Preventing Accidental AdBlue Contamination
To avoid this costly mistake:
Always check the fuel cap before refueling.
Use separate, clearly marked filling points for diesel and AdBlue.
Educate anyone who refuels your vehicle about the difference.
If unsure, ask for help at the fuel station.
When to Contact Your Vehicle Manufacturer or Dealer
If you are unsure about the severity of contamination or if your vehicle shows signs of engine trouble after adding AdBlue, contact your vehicle manufacturer or dealer. They can provide specific advice based on your vehicle model and may recommend authorized service centers.
Summary of What to Do If You Add 1 Litre of AdBlue to Your Diesel Tank
Do not start the engine.
Call a specialist immediately (e.g., 07459 909935 or visit AdBlue in Diesel Tank Specialist).
Arrange for professional fuel tank drainage and system flushing.
Replace fuel filters and inspect for damage.
Refill with clean diesel only after cleaning.
Taking quick action can save you from expensive repairs and keep your diesel engine running smoothly.
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