What to Do If You Put Petrol in a Diesel Car in Suffolk
- wrongfuelincarresc
- 14 hours ago
- 3 min read
Putting the wrong fuel in your car is a stressful mistake that happens more often than you might think. If you accidentally put petrol in a diesel car, it can cause serious damage to your engine and leave you stranded. Knowing what to do immediately can save you time, money, and a lot of hassle. This guide explains the steps to take if you find yourself in this situation in Suffolk, including when to call for professional help like Wrong Fuel In Car Rescue Suffolk at 07904 731886.

Why Putting Petrol in a Diesel Car Is a Problem
Diesel engines and petrol engines work differently. Diesel fuel lubricates the engine’s fuel system, while petrol acts as a solvent. When petrol enters a diesel engine, it can strip away the lubrication, causing metal parts to grind against each other. This leads to:
Damage to the fuel pump and injectors
Engine misfires and poor performance
Potential engine failure if not addressed quickly
The severity depends on how much petrol was added and whether the engine was started after the mistake.
Immediate Steps to Take After Realizing the Mistake
If you notice you have put petrol in your diesel car before starting the engine, do not start the car. Starting the engine circulates the wrong fuel, increasing the risk of damage.
Here’s what to do:
Stop immediately and do not turn the ignition on.
Call a professional rescue service like Wrong Fuel In Car Rescue Suffolk at 07904 731886. They have the tools to safely drain the fuel tank.
If you are at a petrol station, inform the staff. They may have protocols or contacts for fuel rescue.
Avoid trying to drain the tank yourself unless you have experience and proper equipment. Incorrect handling can be dangerous.
If you started the engine and then realized the mistake, switch off the engine as soon as possible. The longer the petrol circulates, the more damage it causes.
What Professionals Do to Fix the Problem
When you call a rescue service, they will typically:
Tow your car to a safe location if necessary
Drain the entire fuel tank to remove all petrol
Flush the fuel system to clear any remaining petrol traces
Refill the tank with the correct diesel fuel
Test the engine to ensure it runs smoothly
These steps prevent long-term damage and get your car back on the road safely.
How to Avoid Putting Petrol in a Diesel Car
Preventing this mistake is easier than fixing it. Here are some practical tips:
Always check the fuel pump label before filling up. Diesel pumps are usually green or black, petrol pumps are often green or red.
Look for the diesel symbol on your car’s fuel cap or near the filler neck.
If you drive multiple vehicles, keep a mental note or sticker reminders about which fuel each car uses.
Take your time at the pump. Rushing increases the chance of error.
If you’re unsure, ask the petrol station staff for help.
What Happens If You Drive After Putting Petrol in a Diesel Car
Driving your car after putting petrol in a diesel engine can cause:
Engine knocking or rough running
Loss of power and acceleration
Warning lights on the dashboard
Permanent damage to fuel injectors and pumps
If you notice any unusual noises or performance issues after fueling, stop driving immediately and seek help.
Cost Implications of Wrong Fuel Mistakes
The cost to fix petrol in a diesel car varies depending on the damage:
Draining and flushing the fuel system can cost between £100 and £300
Replacing damaged fuel pumps or injectors can cost £500 or more
Severe engine damage may require costly repairs or even engine replacement
Calling a professional rescue service early can reduce repair costs significantly.
Why Choose Wrong Fuel In Car Rescue Suffolk
Wrong Fuel In Car Rescue Suffolk offers fast, reliable assistance if you put petrol in a diesel car. Their team understands the urgency and has the right tools to:
Respond quickly across Suffolk
Safely drain and clean your fuel system
Provide expert advice on next steps
Help you avoid costly repairs
You can reach them anytime at 07904 731886 for immediate support.
What to Do After Your Car Is Fixed
Once your car is back on the road, take these steps:
Monitor your car’s performance closely for a few days
Keep an eye on fuel consumption and engine sounds
Schedule a check-up with your mechanic if you notice any issues
Consider using fuel additives recommended for diesel engines to protect the system
Taking care of your car after a wrong fuel incident helps prevent future problems.



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