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Experiencing knocking, loss of power, or smoke? These are classic signs of misfueling. Get expert in before your fuel pump fails completely.

Who We Are
Trusted in
Wrong Fuel in Car UK has recovered over 10,000 misfueled vehicles across England, Wales, and Scotland. Our SPA-certified mobile technicians are GPS-dispatched from the nearest available unit — no call centres, no subcontractors.
We carry full motor trade and public liability insurance. All contaminated fuel is disposed of legally under our Environment Agency waste carrier licence. We operate 24/7, 365 days a year.
The Service
Professional in - Process Details
When petrol enters a diesel fuel system it strips the lubrication from the high-pressure fuel pump. The most immediate symptom is often a metallic knocking or rattling from the engine bay — this is the sound of metal grinding against metal as lubrication fails. Other symptoms include sudden loss of power, excessive white or black smoke from the exhaust, and illumination of the engine management warning light.
The critical thing to understand is that these symptoms may only appear after several miles of driving — by which point significant damage may already be occurring. If you have any reason to believe petrol was added, pull over and switch off the engine immediately, even if it is currently running normally. Early intervention is the difference between a £200 drain and a £5,000 pump replacement.
check_circle What's Included
- checkOn-site fuel contamination diagnosis
- checkComplete tank evacuation if confirmed
- checkFull fuel line and injector flush
- checkEngine system check post-drain
- checkFresh correct fuel added & engine verified
- checkFull VAT receipt for insurance claims
✓ Do This
- Pull over immediately on noticing symptoms
- Switch off the engine at once
- Do not attempt to restart it
- Call us immediately
✗ Don't Do This
- Do NOT keep driving despite symptoms
- Do NOT restart after stalling
- Do NOT go to a garage — call us first
- Do NOT ignore the issue
Simple Process
How Works in
Call Us
Give us your location, vehicle details and fuel situation. We confirm price and dispatch immediately.
We Arrive
Our fully equipped mobile unit arrives in an average of 25 minutes, ready to work immediately.
Drain & Go
We drain, flush, re-prime with correct fuel, verify the engine, and get you moving again.
Reviews
What Our Customers Say
“Car started juddering and losing power. Turned out I put petrol in. They flushed the lines and saved the engine.”
Tom W.
Plumber
Symptom Fix
“I noticed a strange knocking sound after filling up. Stopped immediately, called them, and avoided a massive repair bill.”
Natalie G.
Designer
Engine Saved
“Lots of white smoke and stalling. Their technician flushed the injectors perfectly. Car runs like a dream now.”
Richard A.
Retiree
Injector Flush
FAQs
Common Questions
What does petrol-in-diesel sound like?expand_more
Can I smell petrol in a diesel car that has been misfueled?expand_more
What if my car only ran for a few seconds on the contaminated fuel?expand_more
Will I know if contamination is petrol or something else?expand_more
Is it possible to have symptoms but not have misfueled?expand_more
Reach Us
Get Help in
For emergencies call directly — 24/7. For quotes use the form and we will call back within the hour.
24/7 Emergency
07886 078 646