Diesel in a petrol car in Blarney: what happens next
The first thing to do in Blarney is nothing at all: engine off, handbrake on, then 01295 380724. Sitting in the tank, diesel is inert. It is heavier than petrol and settles to the bottom, but nothing is being damaged. Talking it through with one of our engine scientists, fuel-system engineers and misfuel specialists costs nothing, and the drain itself takes 45 to 90 minutes once someone is on site.
Our own units are UK-based, so in Blarney we take the consultation and put you straight through to a local drainer covering County Cork.
What is actually happening in the tank
Diesel does not ignite from a spark, and a petrol engine has no other way to burn it.
Diesel coats the spark plugs and cylinder walls, so the engine misfires, floods the exhaust with white smoke and often cuts out. It fouls the plugs, can poison the lambda sensors and eventually loads the catalytic converter.
Around Blarney, as everywhere, the direction of the mistake is decided by geometry: an unleaded nozzle drops freely into a diesel filler neck, and a diesel nozzle is too wide for most petrol ones. Adjacent filler necks under one flap explain most of the rest.
Diesel in a petrol car in blarney: the worst case
Fouled plugs, a poisoned lambda sensor and a blocked catalytic converter: unpleasant and inconvenient, rarely terminal.
Blarney: the practical detail
Blarney sits in County Cork, and a unit attends the whole of it. If you are closer to Cork, Carrigaline, Cobh or Midleton, the same applies: the vehicle is not moved, the technician travels. The pickup point is wherever the vehicle already is, including a hard shoulder, a driveway or a multi-storey.
| Contamination | Diesel into the petrol tank |
|---|---|
| Area | Blarney |
| County | County Cork |
| Risk if the engine has run | Moderate |
| Consultation | Free of charge, no obligation |
| Time on site | 45-90 minutes |
| Attendance | Local partner drainer, via our operator |
| Helpline | 01295 380724 |
Blarney is in the Republic of Ireland, and our own drainage units are UK-based. What we do here is put you straight through to a local drainer covering County Cork, so you are not ringing round a search page while the vehicle sits on a forecourt.
The consultation is the same and it is still free. Tell us what went in, roughly how much, and whether the engine has run, and one of our engine scientists, fuel-system engineers and misfuel specialists will establish what is exposed before anyone is dispatched. The mechanism does not change at the Irish Sea: a high-pressure pump fails on petrol in Cork exactly as it does in Cardiff.
How it shows itself
Heavy white exhaust smoke, a rough misfire, hesitation on the throttle and often a refusal to start at all. Fouled plugs are the usual finding.
The work itself
Drain, flush, new filter and clean petrol. Spark plugs are inspected and frequently replaced; the catalytic converter is the component worth watching if the vehicle was driven any distance.
Published UK figures for the work run from about £120 for a straightforward drain to five figures where a vehicle was driven to a standstill. Establishing which end of that range applies to you is free.
What has happened so far?
Pick the one that fits. It is the only question that changes the answer.
- TankThe wrong fuel is sitting still. Nothing downstream has touched it.
- Lift pumpTurning the key runs the in-tank pump, and the contamination starts moving.
- FilterThe filter takes the first hit and is replaced either way.
- High-pressure pumpLubrication fails here first. This is the component that turns a drain into a rebuild.
- Injectors and railDebris from the pump arrives here. At this point the fuel system is replaced, not cleaned.
Fuel Fixer, the company behind UK Wrong Fuel Repository, holds a rating of 4.8 out of 5 from 2,190 reviews on Trustpilot, on a profile claimed since 2017.
Across recent reviews, the themes customers raise most often are staff who stay polite, professional and reassuring during what is a stressful situation, and how quickly a technician arrives and gets the vehicle back on the road in Blarney.
The most common criticism is price. Some customers have felt the cost of an emergency drain was steep for a job that takes under two hours, and that is fair comment on an emergency call-out. It is why the misfuel call-out fee is free and why published repair figures span two orders of magnitude before a technician sets off — so nothing about the cost is a surprise at the roadside.
Nearby
More from the blog
Once the fuel is drained and you are moving again, Motor Servicing will service the car on your driveway rather than making you find a garage.
Background reading: Misfuelling (Wikipedia). Service operated by Fuel Fixer, alongside Misfuel Doctor, Fuel Fixer Scotland and Motor Servicing.