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What Happens When You Put Petrol In A Diesel Engine

If you put petrol in a diesel engine and attempt to drive the vehicle it will fail to run and come to a stop once the engine has used up the remaining fuel in the fuel lines and injectors. Once the contaminated fuel starts to infiltrate the engine and all its components the engine will start to loose power and will eventually come to a stop.

A diesel engine cannot run on petrol fuel, as there are no spark plugs to ignite the petrol fuel. Diesel fuel relies on compression and heat to ignite. This will cause the cylinders in the diesel engine to flood with petrol fuel and prevent the vehicle from running.

In a diesel car, the diesel fuel is used to lubricate certain components of the engine and fuel system. However petrol is like an acid and destroys the lubricating properties of the diesel fuel. Adding petrol into a diesel car will causes a lack of lubrication to vital parts and will cause the parts to wear prematurely.  The petrol fuel also attacks the rubber seals used in a diesel engine and they become brittle and start to leak.


If your fuel system has a leak it will be unable to produce the pressure required to ignite the engine and work the injectors. This will result in your vehicle not starting and having to be repaired at a local garage. The fuel tank will need to be drained and flushed with clean fuel. It is also recommended using a lubricating additive to replenish the lost oils due to putting the wrong fuel in a car.

In most cases significant damage will not be caused unless the vehicle is driven extensively. A fuel drain and flush from a company like Wrong Fuel Recovery is all that will be required to get your vehicle mobile again.

It’s estimated that over 160,000 motorists put the wrong fuel in their car every year in the UK alone. This has made it one of the top 3 causes for a breakdown on the streets of the UK. Wrong Fuel Recovery provides the fastest mobile fuel drain service in the UK. They will aim to be with you within 45 minutes of your phone call and provide the best mobile service throughout the UK.

Wrong Fuel Recovery is a part of the WF Recovery Group providing a 24-hour mobile fuel drain service to motorists who have put the wrong fuel in their car.

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