Petrol in a diesel in Buncrana: the first ten minutes
Stopped in Buncrana with petrol in the diesel tank? Do not turn the key. Call 01295 380724. Sitting in the tank with the engine off, petrol does nothing at all. It has not reached the filter, the pump or the injectors. 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 Buncrana we take the consultation and put you straight through to a local drainer covering County Donegal.
What is actually happening in the tank
Petrol is a solvent and diesel is a lubricant, and the high-pressure pump and injectors are lubricated only by the fuel passing through them.
Once the engine runs, petrol strips that lubricating film within minutes. Metal-to-metal contact in the pump sheds fine swarf, and the swarf travels forward into the common rail and the injectors.
Around Buncrana, 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.
Petrol in a diesel in buncrana: the worst case
A seized high-pressure pump with debris through the rail is the expensive ending: pump, injectors, rail, lines and tank all replaced.
Buncrana: the practical detail
Buncrana sits in County Donegal, and a unit attends the whole of it. If you are closer to Letterkenny, Ballybofey, Donegal Town or Bundoran, 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 | Petrol into the diesel tank |
|---|---|
| Area | Buncrana |
| County | County Donegal |
| Risk if the engine has run | High |
| Consultation | Free of charge, no obligation |
| Time on site | 45-90 minutes |
| Attendance | Local partner drainer, via our operator |
| Helpline | 01295 380724 |
Buncrana 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 Donegal, 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
Knocking or rattling under load, white or grey smoke, a sharp loss of power, and a restart that takes longer each time. Many vehicles run for a mile or two before the fuelling fault appears, which is exactly why the median distance driven is 1.5 miles.
The work itself
The tank is pumped out, the feed line and filter housing flushed, a new fuel filter fitted and clean diesel put in. If the engine ran, the high-pressure pump is checked for scoring and the rail for metallic debris before the vehicle is released.
What a technician brings depends on what you tell the operator, which is why the description matters more than the postcode.
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 Buncrana.
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
A misfuel is a good moment to get the filters and the rest of the car looked at — Motor Servicing comes to your home or workplace.
Background reading: DVSA. Service operated by Fuel Fixer, alongside Misfuel Doctor, Fuel Fixer Scotland and Motor Servicing.