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small amount of petrol in diesel car

🚨 Putting Unleaded in a Diesel Car
Get Fixed ASAP in Suffolk

🚨 Putting unleaded in a diesel car is one of the most common fueling mistakes, but it is also one that requires immediate professional intervention to avoid catastrophic engine failure.

🛑 Do Not Start the Engine

If the engine hasn't been started, do not turn the ignition key or attempt to start the car. Turning the ignition on activates the electric fuel pump, which circulates the contaminated fuel into the sensitive high-pressure components

🅿️ Secure the Vehicle

If you are at the pump, leave the car where it is and engage the handbrake. If you have already driven, pull over to a safe place immediately.

📞 Call for Specialist Fuel Drainage

Call our specialized misfuelling service. Be ready to provide your location (we are in Ipswich, so we can be fast if you're local!) and the vehicle details.

⛽ Wait for Professional Fix

Wait for the expert technician to arrive.

​⛽ Putting Unleaded in a Diesel Car

Diesel acts as a lubricant for the fuel injection system, whereas petrol acts as a solvent; putting unleaded in a diesel car can cause metal-on-metal friction that destroys the fuel pump and injectors in a matter of minutes.

 

At Misfuelled Car Fixer, we provide a specialized 24/7 petrol-in-diesel rescue service across Suffolk, ensuring that the contaminated fuel is drained and the system is thoroughly flushed before any lasting damage occurs.

 

Our mobile technicians are equipped with high-speed suction units to clear your tank at the roadside, getting you back on the road in Ipswich, Bury St Edmunds, or anywhere in the county without the need for an expensive tow or a garage visit.

​⛽ Follow this Emergency Action Plan to protect your vehicle if Putting Unleaded in a Diesel Car

1. Stop Everything Immediately

The most important rule: Do not start the engine if putting unleaded in a diesel car. If you have already started it, turn it off as soon as it is safe to do so. Do not even put the key in the ignition or press the start button, as this can activate the fuel pump and send petrol into the engine.

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2. Leave the Fuel Cap Off

In some modern cars, removing the fuel cap can prevent the system from pressurizing. It also serves as a visual reminder to yourself (and anyone helping you move the car) that the fuel is contaminated.

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3. Move the Vehicle to Safety

If you are blocking a pump at a petrol station, ask the staff or a bystander to help you push the car to a safe parking bay. Keep the car in Neutral while moving it.

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4. Call Misfuelled Car Fixer Suffolk

Call our 24/7 emergency line at 0330 122 6640. Tell our technician:

  • Your exact location in Suffolk (Postcode or What3words).

  • The make and model of your car (Registration number).

  • Roughly how much petrol you put in.

  • Most importantly: Whether or not you started the engine.

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5. Relax – We’re On Our Way

Once you've called us, the hard part is over. Our mobile fuel drainage unit will arrive, usually within an hour, to:

  • Drain the contaminated unleaded/diesel mix.

  • Flush the fuel lines and filter.

  • Add enough fresh diesel to get you to the next pump.

  • Test the engine to ensure it’s running smoothly.

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