AdBlue in the Diesel Tank in Fishguard? Keep It Switched Off
Motor off, ignition off: that's how you start if AdBlue has got into the diesel tank. Chemically, AdBlue is just urea in water. It does not burn, it doesn't mix with diesel, and the damage it does begins when the fuel system pulls it in. In Fishguard, AdBlue in a diesel tank found before your motor runs usually comes down to a drain and a thorough flush, right where your car is. Phone 0333 366 0103 before you do anything else.
Fishguard, AdBlue in your diesel tank: what to do at once
Do:
- Keys out — then no one can power anything on.
- Put the hazards on if you are at all close to moving traffic.
- The empty bottle or the receipt shows us the fluid and the quantity, so do not bin it out.
- The van locates you quickest with a postcode starting SA65 9, or just the name of a street close by, and so call from the car.
Don't do these:
- No starting the engine — not briefly, not to reposition the car.
- Do not switch your ignition on. On many diesels that alone runs the fuel pump.
- Don't top up with diesel to dilute it. AdBlue doesn't dilute in diesel; it separates out.
- Any driving at all is to be avoided, including a short way up Main Street.
- By the road, don't attempt draining it on your own.
On a forecourt in Fishguard, whether it's the the nearest petrol station or another one, ask the staff to help you push the vehicle clear of the pump. On your own driveway, don't touch it at all.
AdBlue in a diesel tank, and what it does there
The motor is not what AdBlue is made for; the exhaust is. From a dedicated tank it goes directly to the exhaust, cleaning what the motor lets out. Neither side fits the other: urea does not belong in an injection pump, and an injection pump cannot deal with urea.
Tipped in with the diesel, it stays separate rather than mixing — quite different from fuel. The intake sucks fuel from the deepest part of your tank, and that is just where AdBlue settles: as it is denser than diesel, it sinks. The first thing the system pulls through, once it runs, is the AdBlue. So a motor that had AdBlue poured in on a drive in Goodwick last night, and has not been started since, is still the easy case: the AdBlue is lying at the bottom of the tank, and nothing has sucked it in.
Two kinds of harm come from there. It attacks some metals used in fuel systems, attacking whatever it reaches until it's removed completely. And when the water evaporates, the urea forms crystals that clog filters and lodge in narrow channels. If the AdBlue has reached the pipework, waiting overnight in Fishguard makes it worse. Inside the tank only, waiting costs nothing. Then there is the water: it brings no lubrication to the components that need it most — the injection pump and each injector.
Petrol or AdBlue in a diesel: why AdBlue is frequently worse
Petrol pumped into a diesel on Esso's forecourt leaves the fuel watery — that's the whole problem. It mixes with your diesel, and whilst it's inside that tank it does no harm; the damage comes from running the motor on it.
AdBlue in a diesel is another problem: not thin fuel, yet no fuel at all. It cannot just be run through, because it does not burn. It doesn't stay mixed, so it can't be thinned. And crystals and corrosion don't wash out with the next tank of fuel. That is why the flush matters more with AdBlue than with petrol, and why starting your motor "to see" costs more here than almost anywhere else, whether your car is in Harbour Village or the middle of Fishguard.
The good news is the same as with petrol. Not run? Then the AdBlue sits just in that tank, the easiest bit of the entire system to clear, anywhere the vehicle has come to rest across Pembrokeshire.
How AdBlue ends up in a diesel tank in Fishguard
After dark, two caps side by side — the AdBlue one and the diesel one, occasionally under one flap — can appear the same. No one intends it; plenty of layouts allow it. A container bought while driving home and poured in outside the house, rather than at the filling station, is the typical route.
Mostly, it occurs in one of a few familiar ways. The refill is hurried outside the local primary school, because the dash flashed with a warning while the children were taken in. Close to West Street, someone pours a container in on that drive in the evening. Otherwise, in dim light by The Royal Oak, your car gets refilled by someone using that flap the first time.
Rented motors, brand-new motors, company motors, or the spare car in a home with one of each: the least familiar cars get it most. An identical slip, same first step — leave it off — wherever you happen to be in Fishguard or the remainder of Pembrokeshire.
AdBlue in your diesel tank in Fishguard, and the engine started?
Then that tank is no longer where the AdBlue is. Given any running, it travels to the high-pressure pump and each injector, after passing through the filter and pipework.
Rough running, smoke from the exhaust, lost power, dashboard lights or stalling: each might show up, maybe midway across Fishguard or coming back from Lota Park. Stop as soon as it is safe, switch off, and do not restart it to check. Each start pulls more of that through.
Fishguard lies under 50 miles from the M4; if you were on it, exit by the next junction and pull up safely rather than driving on.
How far it went matters. A couple of hundred yards across Fishguard to the car park by London House Gallery is a very different job from a run towards St Davids, under 15 miles away, with the AdBlue reaching further into your system with each mile. Roughly how far had it come? Tell us.
There is more to flush once the motor has been run, and our technicians do all of it where your car has ended up. If it is caught soon, permanent damage is very unusual.
Fishguard: how AdBlue is cleared from a diesel
A street by Cofeb D.J. Williams, a drive, a layby or a forecourt: wherever your vehicle has come to rest in Fishguard, our technicians come to it. The job depends on three replies, and our technicians ask for before all else — which fluid was put in, the quantity, and whether the engine has run.
Next, emptying that tank on the spot removes the polluted diesel along with the AdBlue in one go. A full flush counts far more with AdBlue than after petrol, since what remains won't clear away by itself. Clean diesel goes in once the filter is cleaned — or replaced, when it needs to be — and after that your vehicle is tested. If your motor has not run, the majority of jobs take about half an hour once we arrive. Explosion-proof pumps make a busy forecourt sensible to work on, and they run quiet enough to spare the street at night.
Finally, the fuel system is bled with new diesel. Whether it's a parking bay at Fishguard & Goodwick or a driveway in Fishguard, that is where our technicians fire it up and you drive off. The test before our engineers head off is that it runs properly on clean diesel. No workshop is required at any stage, with the entire job done on the spot. Afterwards, you are given the paperwork for your insurer: a VAT invoice plus a report from the engineer.
About Fishguard
Fishguard is a coastal town in Pembrokeshire, situated on the western coast of Wales at an elevation of around 65 metres. Fishguard looks out over Fishguard Bay and is surrounded by scenic coastal scenery. Fishguard has a mix of housing types, but detached homes are predominant, and the town is close to nearby places like Penyraber and Lower Town. Fishguard is a significant residential centre in the area, with a population of approximately 3422 people.
AdBlue drains across Fishguard and Pembrokeshire
Penyraber, Lower Town and Dyffryn are among the places near Fishguard that the same teams reach, along with much of Pembrokeshire further out, throughout the SA postcode area. Ring and ask rather than guess when you are close to a county line, or anywhere awkward to pin down.
Fishguard is a coastal town, and a call-out drain suits it: whether your car is on a home drive, a residential street, a car park or a forecourt, we drain it where it stands, so it never needs to be moved to us.
AdBlue in a diesel tank in Fishguard: the cost of fixing it
There's no fair single price, since the jobs aren't the same. What moves the cost is, first, whether the engine has been running and for how long; then how much AdBlue was put in; and after that where the car is and whether a technician can get to it safely, which is easier on an open drive than in a tight spot behind Bethel English Baptist Church.
With that in mind, every call from Fishguard begins by asking the same trio — what was put in, what quantity, if the engine ran — before a quote. With those replies, a range shrinks to one fixed figure.
The price is quoted on the call, before anyone sets off; settling up comes on the day, by card or over the phone, and nothing upfront. Many insurance policies include misfuelling cover, and so it is worth checking yours whilst we are on the way.
Still next to the vehicle in Fishguard?
Right now, the best thing to do with your car is to leave it. Keys out, engine off, ignition off. Say it was AdBlue, about how big an amount, and whether it ran, on 0333 366 0103. After that Petrol in Diesel takes over, in Fishguard or anywhere in Pembrokeshire.