AdBlue in the Diesel Tank in Leckwith? Keep It Switched Off
Motor off, ignition off: that's how you begin if AdBlue has gone into your diesel tank. Water with urea mixed in it: that is AdBlue. Being water-based, it will not ignite and never combines with diesel; trouble just starts once the pump begins drawing it. A drain and a thorough flush, done where your car is around Leckwith, is normally all AdBlue in a diesel tank needs — if it is caught before your engine has run. No step comes before calling 0333 366 0103.
Your next steps right now, Leckwith: AdBlue in your diesel tank
Things to do:
- Keys out — then no one can power anything on.
- Close to moving traffic? So put the hazard lights on.
- Hold on to the receipt or the empty bottle, so you can tell us what was put in and about how much.
- Ring us from where you are. A postcode starting CF11 8, or the name of the closest street, gets our van to you without a search.
Never:
- Shifting your vehicle even a few yards is no reason to start the engine.
- Many diesels power their fuel pump the moment your ignition comes on, so keep the car off.
- Do not top up with diesel to dilute it. AdBlue does not dilute in diesel; it separates out.
- Never drive it anywhere, not even a short way up Hadfield Close.
- No emptying it yourself, at all, at the verge.
Get the attendants to help you roll the vehicle away from the pumps if you're on a forecourt around Leckwith, whether it's the Asda or somewhere else. At your own drive, do not touch it at all.
AdBlue in a diesel tank, and what it does there
Not the motor but the exhaust is where AdBlue is meant to go. It goes into its own tank and is sprayed into the exhaust gas to fresh it. Neither side fits the other: urea does not belong in an injection pump, and an injection pump cannot take urea.
It does not combine. Once it's tipped into the tank, AdBlue behaves nothing like diesel. The pickup takes fuel from the lowest part of that tank, and that is precisely where AdBlue ends up: being denser than diesel, it sinks. When the system runs, the AdBlue is first to be pulled through. Before then it waits underneath the diesel, which is how a vehicle filled in Llandough yesterday and never switched on remains the simple case, provided nobody turns the key.
Once it's pulled in, the damage takes two forms. It eats at certain metals used in fuel components, working on any part it reaches till it's cleared completely. And when the water goes, the urea forms crystals that clog filters and lodge in narrow passages. Lines holding AdBlue spell harm by morning for a vehicle parked in Leckwith. Only inside the tank, it stays the same. Water protects nothing. The injection pump and every injector depend on diesel running past them, so the water part damages them in its own right.
AdBlue in a diesel: why it's regularly worse than petrol
Petrol pumped into a diesel on Shell's forecourt makes the fuel thin — that's the main fault. It mixes with your diesel, and while it's in the tank it does no harm; the damage comes from running your engine on it.
With AdBlue in a diesel, the liquid as such is simply the wrong one. Not burning, it can't simply be run through. It doesn't stay mixed, and so it can't be weakened. And crystals and corrosion don't wash out with the next tank of fuel. That is why the flush counts more with AdBlue than with petrol, and why starting the motor "to see" costs more here than nearly anywhere else, whether the car is in Victoria Park or the middle of Leckwith.
The same good news holds as with petrol. Wherever around Cardiff your car has stopped, an unrun motor leaves the AdBlue yet inside the reservoir: the simplest part of a fuel system to clear.
How does AdBlue end up in a diesel tank around Leckwith?
It is not deliberate. Many vehicles have the AdBlue cap beside the diesel one, now and then behind one flap, and mixing them up is easy after dark. A container bought when heading home and poured in outside the house, instead of at the filling station, is the typical route.
A couple of familiar ways account for most cases. Midway through the drop-off, the dashboard warns, and outside the local primary school the top-up is rushed. Close to Whittle Road, a driver tips a bottle in at home after work. Or someone unfamiliar with that flap refills your vehicle in dim light, parked in the car park outside The Sand Martin.
It occurs most in the motors drivers know least: a hire car, a new motor, a company car, or the second motor of a household with one diesel and one petrol. An identical mistake, same first response — keep it off — anywhere you happen to be in Leckwith or the rest of Cardiff.
Already started the motor with AdBlue in the diesel tank around Leckwith?
The AdBlue has left that tank, then. Through the fuel filter, along the pipework, and — with any running time — on to the injection pump and every injector: that's how far it travels.
Maybe returning from Factory Wood, or midway across Leckwith, your engine may run rough, smoke, drop pace, flash the dash or stall. Pull over when safe. Turn off. Leave it off rather than testing it again. Each start pulls more of that through.
Exit the M4, under 5 miles from Leckwith, by the first junction and stop somewhere safe, rather than carrying on.
How far it went matters. A few hundred yards across Leckwith to the car park by Cardiff City House of Sport is a very different job from a run towards Cardiff, under 3 miles away, with the AdBlue reaching further into your system with each mile. Tell us roughly how far it had come.
Our engineers do all of the cleaning where the car has ended up, and once the engine has been started there is more of it. Spotted early, it very seldom leaves long-term damage.
What does an AdBlue drain on a diesel involve around Leckwith?
Our technicians come to the car, wherever it has stopped around Leckwith: a side street close to Cardiff City Stadium, a drive, a lay-by or a forecourt. The work rests on three answers, and we ask for before all else — what got in, the amount, and whether the engine has turned over.
Next, draining that tank on the spot removes the contaminated diesel along with the AdBlue together. A full flush counts much more with AdBlue than after petrol, since what remains won't clear out on its own. The filter is cleaned, or replaced where it needs to be; clean diesel goes in; and the car is tested. About half an hour on site is usual for most jobs where your motor has not run. The equipment is explosion-proof, and so a busy filling station is no issue, and it's hushed enough for a residential street late at night.
Lastly, the system is bled with fresh diesel. Firing it up comes next, and then you head off from where the vehicle is parked, at Ninian Park or on a drive around Leckwith. The check before our engineers leave is that it runs smoothly on fresh diesel. Since the job is done in full where the vehicle is, a workshop never comes into it. Afterwards, you are given the paperwork for your insurer: a VAT invoice and a written report from the engineer.
About Leckwith, briefly
Leckwith is a small suburban area in Cardiff, situated near the coast and approximately 1.5 miles from the city centre. Leckwith has a low elevation of around 10 metres and is close to nearby places such as Grangetown, Riverside, and Canton. Leckwith is predominantly composed of flat-type housing, which is typical of many urban areas in Wales.
AdBlue drains across Cardiff, Leckwith included
AdBlue jobs around Leckwith go to vans that serve the places around it — Grangetown, Riverside as well as Canton — and much of Cardiff further out, across CF postcodes. Phone and ask rather than guess when you're close to a county line, or anywhere awkward to explain.
Leckwith is a residential suburb, and a call-out drain suits it: whether the car is on a home drive, a residential street, a car park or a forecourt, we drain it where it is, so it never needs to be moved to us.
Leckwith: what AdBlue in a diesel tank costs to fix
Every job is different, and so not one single quote is honest. Three things move the price: whether your engine has been running and for how long, how much AdBlue got in, and where the car is. That last one comes down to whether our van can get to it safely, and an open driveway is easier than a tight gap behind Fred Keenor.
That's why each call from Leckwith starts with the same three questions, asked before giving a figure, not after: what was put in, how much, and if it's run. Their replies narrow a range right down to one number.
Quoted on the call before the van sets out, it is paid for on the day — card or phone, no deposit. Check your insurance while we're on the way: plenty include misfuelling cover.
Leckwith: still alongside the vehicle?
Then the most useful thing you can do is nothing to your car. Ignition off, engine off, keys out. Petrol in Diesel handles the rest, across Leckwith or anywhere within Cardiff, once you ring 0333 366 0103 to say it was AdBlue, roughly how big an amount, and whether the engine ran.