What to Do If You Put Petrol in My Diesel Car Essex
- Misfuelled Car Fixer Essex
- 2 days ago
- 3 min read
Putting petrol in a diesel car is a common mistake that can cause serious damage to your vehicle. If you find yourself in this situation in Essex, knowing the right steps to take can save you time, money, and stress. This guide explains what happens when petrol enters a diesel engine, how to respond quickly, and where to get professional help like Misfuelled Car Fixer Essex.

Why Putting Petrol in My Diesel Car Is a Problem
Diesel engines rely on the lubricating properties of diesel fuel to keep their fuel pump and injectors working smoothly. Petrol lacks these lubricants and burns differently, causing several issues:
Fuel system damage: Petrol can cause the diesel fuel pump to seize or wear out quickly.
Engine misfire and stalling: Petrol ignites differently, leading to poor combustion.
Potential engine failure: Running the engine with petrol can cause permanent damage.
In Essex, where many drivers rely on diesel cars for fuel efficiency and performance, this mistake can be costly if not handled properly.
Immediate Steps to Take If You Put Petrol in Your Diesel Car
If you realize you have filled your diesel car with petrol, act fast to minimize damage:
Do not start the engine
Starting the engine circulates the petrol through the fuel system, increasing the risk of damage.
Turn off the ignition
If the engine is already running, switch it off immediately to prevent further damage.
Call a professional
Contact a specialist like Misfuelled Car Fixer Essex who can safely drain and clean your fuel system.
Avoid driving the car
Even short trips can cause petrol to spread through the engine, increasing repair costs.
How Professionals Fix Petrol Misfuelling in Diesel Cars
Experts in Essex follow a clear process to fix misfuelled vehicles:
Drain the fuel tank
They remove all contaminated fuel to prevent further damage.
Flush the fuel system
This includes cleaning fuel lines, filters, and injectors to remove petrol residues.
Check for damage
The fuel pump and injectors are inspected for wear or failure caused by petrol.
Refill with diesel
After cleaning, the tank is refilled with the correct diesel fuel.
Test the vehicle
The car is started and monitored to ensure it runs smoothly without issues.
This process can take a few hours but is essential to avoid costly repairs or engine replacement.
How to Avoid Putting Petrol in Your Diesel Car in Essex
Prevention is better than cure. Here are practical tips to avoid this mistake:
Know your fuel type
Always double-check the fuel type before filling up, especially if you drive multiple vehicles.
Look for clear labels
Many petrol stations in Essex have clear signs and colour-coded nozzles to help.
Use the right pump
Diesel nozzles are usually larger and won’t fit into petrol car filler necks, but petrol nozzles can fit into diesel cars, so be careful.
Stay focused at the pump
Avoid distractions when refuelling to prevent errors.
Ask for help
If unsure, ask the station attendant to assist.
What to Expect When You Contact Misfuelled Car Fixer Essex
Misfuelled Car Fixer Essex specializes in handling petrol in diesel car cases. When you call them:
They provide quick advice on what to do next.
They arrange a prompt vehicle inspection.
They offer on-site fuel draining or towing to their workshop.
They explain repair costs upfront.
They ensure your car is safe to drive again.
Their expertise helps Essex drivers avoid long-term damage and get back on the road quickly.
Costs and Time Involved in Fixing Petrol Misfuelling
The cost depends on how much petrol was added and whether the engine was started:
If caught early (before starting)
Draining and flushing may cost between £150 and £300.
If the engine ran
Repairs can rise to £500 or more due to damaged components.
Time to fix usually ranges from 2 to 6 hours depending on severity.
Signs Your Diesel Car Needs Immediate Attention After Misfuelling
Watch for these warning signs if you suspect petrol contamination:
Engine warning lights on the dashboard
Rough idling or stalling
Difficulty starting the engine
Unusual noises from the fuel pump area
Loss of power or hesitation when accelerating
If you notice any of these, stop driving and seek professional help immediately.
What Happens If You Ignore Petrol in Your Diesel Car
Ignoring the problem can lead to:
Complete fuel pump failure
Injector damage
Expensive engine repairs or replacement
Breakdown on the road, which can be dangerous and inconvenient
In Essex, where roadside assistance may take time, it’s safer to act quickly.






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