Petrol in Diesel: What Happens and How to Fix

Introduction

Putting petrol into a diesel engine is one of the most dangerous things you can do with your vehicle. The consequences are not only financial but also potentially catastrophic for your car's engine. In this article, we'll explore what happens when such an error occurs and provide guidance on how to proceed.

The Chemistry Behind Petrol in Diesel

Diesel engines operate differently from petrol engines. They use a mixture of air and diesel fuel to ignite and power the engine. When you put petrol into a diesel engine, several things happen:

1. Initial Ignition: The petrol ignites almost immediately due to its higher volatility compared to diesel.
2. Damage to Engine Components: The sudden ignition can cause severe damage to components like the fuel pump, injectors, and cylinders.
3. Fuel System Overheating: Diesel engines are designed for a specific temperature range. Petrol's lower flash point means it can heat up quickly, leading to overheating of critical engine parts.

Timeline of Potential Issues

The timeline after putting petrol in a diesel car is crucial:

• Immediate Effects: The engine will likely shut off immediately due to the sudden ignition. This is often referred to as the 'dead battery' effect, where the electrical system fails and the vehicle stops.
• Short-term Damage: Overheating can cause damage to the fuel pump, injectors, and other components within minutes of the petrol being introduced.
• Long-term Consequences: If not addressed promptly, this issue can lead to permanent damage to the engine, requiring extensive repairs or even replacement.

What to Do Right Now

If you suspect that your diesel car has been put into a petrol tank, here are some steps you should take immediately:

1. Do Not Start the Engine: This is always the #1 rule. Starting the engine could exacerbate the damage and make it more difficult to repair.
2. Contact EEK Mechanical: We specialize in towing vehicles with this issue and transporting them to an NZIFDA-certified workshop for manufacturer-spec fuel system recovery. Our hotline number is 0800 769 000.
3. Prepare for Recovery: We will dispatch a tow truck to your location, whether it's the forecourt, roadside, home, or car park. The vehicle will be transported to an NZIFDA-certified workshop where the manufacturer-spec fuel system recovery process will begin.

Repair Process at the Workshop

At the workshop, we follow these steps:

1. Tow Truck Collection: Our tow truck will collect your vehicle from its current location and transport it to the workshop. This is a safe and efficient way to ensure that all necessary precautions are taken during transportation.
2. Manufacturer-Spec Fuel System Recovery: The repair process involves removing any residual petrol from the fuel system, replacing damaged components, and ensuring everything is back to normal operating conditions. This work cannot be done at the collection location; it must be performed in a certified workshop.

Conclusion

If you find yourself in this situation, do not delay. Contact EEK Mechanical immediately by calling 0800 769 000 to have your vehicle towed and repaired at an NZIFDA-certified workshop. We are here to help you get back on the road safely and efficiently.

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