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The Wrong fuel Guide: what to do if you put petrol in your diesel car

Misfueling is a costly mistake, here is what to do if you make this mistake

Adding wrong fuel into your vehicle is not the end of the world and it is not a really an irreversible mistake at all but when things turn another way, it can be a bit costly indeed.

Your error should be less costly repairable if you realise your mistake there and then and call the wrong fuel assist team for sucking your fuel out of the tank and replace it with the correct one. This would only include hassle of calling the services, waiting and pumping the fuel out of the pump and you will be ok to go.

However, if you made any mistake like you drove your vehicle out of the fuel station and its engine shut down itself, it would be a serious problem for you then. After driving your vehicle away, you can face repair bills of not less than thousands of pounds and even end of the life of your car engine and its fuel delivery system.

Most Misfueling incidents

Petrol in diesel

Petrol in diesel

Majority of drivers put petrol in their diesel cars and this incident happens more than 96 per cent in the UK. The petrol nozzles easily fit into the diesel fuel tanks and drivers do not even realise that they are pouring petrol in the diesel.

It’s really harder to go another way at any fuel station. Petrol filler caps are totally different than the diesel filler caps. Petrol ones are bit smaller than the diesel filler caps and they help petrol nozzle to easily fit into the diesel tank.

If you spot your mistake quickly as you were just filling up the fuel, then there is a big chance that you won’t get your pocket and vehicle damaged and there is a likely chance that you will get away without any massive bills and everything.

According to the theories and practices of the experts, you are still able to pour 5 per cent petrol in diesel and it won’t affect your engine. Less than 5 per cent petrol in a diesel fuel tank, you would not face any disastrous consequences and the fuel will burn out.

If there isn’t another 95 per cent space available to refill the rest fuel tank with diesel fuel to save your engine, then simply call any services who can drain the fuel tank to save your engine

What happens when you put petrol in a diesel car?

To be very honest, there is nothing dangerous until you do not turn your keys into the ignition switch to turn your engine ON. You can simply recover your vehicle by draining the fuel tank and you even do not need to confess your mistake to the garage attendant.

Usually, it costs you around £200 for a small vehicle to break down and drain the entire fuel in the tank.

Petrol station

Wrong Fuel at petrol station

Wrong Fuel at petrol station

Igniting the engine into life is one of the massive mistakes you can make at the fuel station after refuelling. In some actually advanced vehicles, if you even just turn the key on and the lights on the dashboard illuminate, it could mean that your fuel pump has started working and it will kill your engine as soon as you will ignite it.

It supposed to charge the engine with fuel mixture before it starts. Illuminating the dashboard is relatively easier to repair than repairing a vehicle with engine started.

As soon as fuel pump started working, it will suck fuel from the fuel tank and will push it to all the fuel delivery system. The worst case scenario starts here.

Petrol in diesel: the worst-case scenario

Most advanced and modern diesel engines employ the best technologies to return the best fuel economy figures and impressively low carbon emissions including the high-pressure fuel pump.

They include high-pressure fuel pumps and common rail fuel injection system with zero tolerances and ultra-high precisions. Diesel fuel itself used to lubricate the diesel pumps and as it passes through the system.

Replacing that diesel with the petrol can harm the system because petrol has some seriously strong solvent qualities and it eliminates the lubrication effect in minutes. A diesel fuel pump running on diesel lubrication as soon as gets petrol circulating in it, it faces some serious internal friction as its metal surfaces grind quickly.

Wrong Fuel in Van

Wrong Fuel in Van

All the zero and ultra-fine tolerances removed. The overall performance of the engine decrease suddenly and the petrol in return creates swarfs on the surface of the router and other parts. Those fine metal particles then pass over into the fuel delivery lines and into the injectors.

They also play a vital role in blocking the filters and injectors. The diesel injectors come under direct firing line in all this process as they work on very high pressure. They spray fuel into the engine cylinders through their very fine nozzles and spray patterns.

When these microparticles entre into the fuel injectors and block the system, they cost thousands of pounds as the common rail fuel injection system is the expensive option.

Apart from damage to the fuel delivery system, the corrosive traits of the petrol can be done even more damage to the system. It can include degrading of seals, corrosion on the bushing system in the fuel pump. At least it would be required to check the entire system assess for damage, as well as it needs to be flushed with a cleaning agent and must be done by an expert mechanic at your garage.

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