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Putting diesel in a petrol car is a common mistake, and a costly one. If you’ve done this, don’t panic, but don’t start the car! This article covers everything you need to know about what happens when you put diesel in a petrol car, how much it costs to fix, and what steps to take to rectify the situation.

What Happens When You Put Diesel in a Petrol Car?

Diesel fuel is thicker and oilier than petrol, and it doesn’t ignite in the same way. If you start your petrol car with diesel in the tank, the fuel pump will distribute the diesel throughout the fuel system. This can contaminate the fuel lines, fuel filter, fuel injectors, and even reach the engine itself. While modern cars are more sensitive, older vehicles can sometimes tolerate small amounts of diesel contamination without major damage. However, it’s always best to err on the side of caution.

If you’ve driven the car after realizing your mistake, the problem becomes more serious. The diesel can clog the fuel injectors, preventing the engine from running properly and potentially causing serious damage. In this case, you’ll likely experience poor performance, misfires, and eventually the car may stall and refuse to start.

How to Fix a Diesel in Petrol Car Situation?

The solution involves draining the contaminated fuel from the tank, fuel lines, and other components. This usually requires professional assistance. A mechanic will drain the tank, flush the fuel lines, replace the fuel filter, and possibly clean or replace the fuel injectors. In some cases, depending on how far the car was driven, more extensive repairs may be needed.

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How Much Does it Cost to Fix?

The cost to fix this problem can vary depending on the extent of the contamination and the make and model of your car. Draining the tank and flushing the fuel system can cost anywhere from a few hundred dollars to over a thousand, especially if the injectors are damaged and need replacing.

“The sooner you address the issue, the less expensive the fix will be,” says experienced automotive technician, Michael Davis. “Don’t attempt to drive the car or fix it yourself, as this could worsen the situation.”

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Preventing Diesel in Petrol Mishaps

Prevention is always better than cure. Pay attention at the pump and double-check the fuel type before filling your tank. If you’re unsure, ask the attendant for assistance. Also, consider using a clearly labeled fuel cap or sticker to remind yourself of your car’s fuel type.

“A simple sticker or labeled fuel cap can save you a lot of trouble and money in the long run,” advises automotive engineer, Sarah Johnson.

How Long Does it Take to Fix a Diesel in Petrol Car?

The repair time can range from a few hours to a day, depending on the complexity of the issue.

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Conclusion

Putting diesel in a petrol car is a preventable mistake that can lead to costly repairs. If you’ve made this error, don’t start the car. Contact a qualified mechanic immediately to drain the fuel system and assess the damage. Remember, the quicker you act, the less expensive the fix will be. For reliable and expert assistance with your car troubles, reach out to AutoTipPro at +1 (641) 206-8880 or visit our office at 500 N St Mary’s St, San Antonio, TX 78205, United States. Knowing how much to fix diesel in petrol car issues is vital for every driver.

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FAQ

1. Can I drive my car if I put a small amount of diesel in the petrol tank? No, it’s not advisable. Even a small amount can contaminate the fuel system.
2. Will my car insurance cover the repair costs? It depends on your insurance policy. Some policies cover misfuelling, while others don’t.
3. What are the signs of putting diesel in a petrol car? Difficulty starting, misfiring, excessive smoke, and poor performance.
4. Is it more damaging to put petrol in a diesel car or diesel in a petrol car? Generally, putting petrol in a diesel car is considered more damaging.
5. Can I drain the fuel tank myself? It’s not recommended. It’s best to leave this to a qualified mechanic.
6. How can I prevent this from happening again? Pay close attention at the pump, use labeled fuel caps, and double-check the fuel type.
7. What should I do if I accidentally start the car after putting diesel in it? Turn off the engine immediately and call a mechanic.