AdBlue in a Diesel Tank in Histon? Don't Start It
Motor off, ignition off: that is how you start if AdBlue has got into your diesel tank. AdBlue is urea dissolved in water. The trouble starts once it's pulled through your lines — it will not ignite, and it will not combine with diesel. A drain and a thorough flush, done where your car is in Histon, is normally all AdBlue in a diesel tank takes — if it is caught before the motor has run. Phone 0333 366 0103 before you do anything else.
AdBlue in your diesel tank in Histon: the first few minutes
Do these:
- So no one can turn the ignition on, pull your keys out.
- If you are at all near moving traffic, put your hazards on.
- The empty bottle or the till receipt shows us the fluid and the amount, and so do not bin it away.
- Call us from where you are. A postcode starting CB24 9, or the name of the nearest street, gets our van to you without a search.
Things not to do:
- Not even briefly, and not to roll the vehicle: the motor stays off.
- Many diesels power their pump the instant the ignition comes on, and so leave the car off.
- No extra fuel added. The AdBlue will not mix, so it is pointless.
- Any driving at all is to be avoided, including a short way along High Street.
- Do not try to drain it yourself by the kerbside.
The staff on duty at any Histon filling station — the Gulf included — will usually lend a hand rolling it clear if you ask. Parked on your own drive? Then it remains just where it is.
What does AdBlue do in a diesel tank?
Not the engine but the exhaust is where AdBlue is meant to go. From a dedicated reservoir it goes straight to your exhaust, cleaning what your motor emits. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is made to handle it.
Tipped in with your diesel, it stays apart instead of mixing — entirely unlike fuel. It is heavier than diesel, and so it sinks and gathers at the bottom of that tank, which is where the pickup draws fuel from. The first thing your fuel system pulls through, once it runs, is the AdBlue. So a motor that had AdBlue poured in on a drive in Westwick last night, and has not been started since, is still the straightforward case: the AdBlue is lying at the bottom of your tank, and nothing has drawn it in.
Two kinds of damage come from there. Crystals and corrosion. As the water evaporates, it strands urea that crystallises in filters and narrow channels; and, since it eats at some metals, each part it touches suffers for as long as it stays in there. Lines holding AdBlue spell damage by morning for a vehicle sitting around Histon. Only in that tank, it stays the same. The water in it causes damage of its own: your high-pressure pump and the injectors rely on diesel to lubricate them, and water gives them nothing.
Petrol or AdBlue in a diesel: why AdBlue is frequently worse
Put petrol in a diesel at the BP and you have an issue of thin fuel. Blended into the diesel and sitting unused, it's no threat for now; using the engine does the harm.
AdBlue in a diesel is a different problem: not thin fuel, but no fuel at all. It does not burn, so it can't just be run through. Nor can it be thinned, since it splits again — and the next fill will not clear away crystals or corrosion. So the flush counts for more here, and turning your key "to see", in the heart of Histon or out in Oakington, does more harm than almost any other mistake.
With AdBlue, the good news is no different from petrol. Emptying a tank is the easiest job on any fuel system, and without running, the AdBlue remains in it — anywhere across Cambridgeshire your vehicle has stopped.
How AdBlue ends up in a diesel tank in Histon
Nobody means to do it. The AdBlue filler on plenty of motors waits right next to your diesel filler, at times under the same flap, and the two caps can look alike in poor light. It mostly happens at home, from a bottle bought en route home, not at the forecourt.
Mostly, it happens in one of a couple of familiar ways. The top-up is hurried outside Histon and Impington Brook Primary School, after the dash lit up with a warning as the children were dropped off. A bottle is poured in at the end of the day on a drive just off The Green. One more pattern: darkness, the car park outside The Boot, and a driver opening that flap for the first time.
It happens most in the cars motorists know least: a hire car, a new vehicle, a company car, or the second vehicle of a household with one diesel and one petrol. Keep it off: that is the first step to an identical slip, wherever in Histon or the rest of Cambridgeshire you are.
Started the engine with AdBlue in your diesel tank around Histon?
The AdBlue has left the tank, then. With any running time, it goes on to the injection pump and every injector, after passing via your filter and pipework.
Rough running, smoke from the exhaust, dropping power, dashboard warnings or cutting out: any might appear, perhaps midway across Histon or returning from Histon Wood. No starting it again to check: stop once it is safe, then turn it off. Every start pulls more of it through.
If you were on the M11, under 3 miles from Histon, come off at the next junction and stop somewhere sensible rather than pressing on.
How far it went matters. A few hundred yards across Histon to the car park by Histon Methodist Church is a very different job from a run towards Cambridge, under 5 miles away, with the AdBlue reaching further into the fuel system with every mile. Tell us roughly how far it had come.
There is more to clean out once the motor has been started, and our technicians do all of it where the vehicle has come to a stop. Very seldom does it leave lasting damage when it's noticed soon.
What does an AdBlue drain on a diesel involve in Histon?
Anywhere it has stopped around Histon — a filling station, a lay-by, a drive, a street by a street just off the centre — the van comes to the vehicle. Which fluid was put in, roughly the quantity, plus if the engine has been run: our engineers check first, since those decide the job.
Right there, the tank is then emptied, and both the polluted diesel and the urea come out at once. Residue from AdBlue won't flush away unaided, so the fuel system gets a full flush, which matters much more here than with petrol. After that, the filter: flushed, or replaced if it has to be. After that fresh diesel, then a check of the car. Most of these jobs are a half-hour visit once our technicians arrive, if the engine hasn't run. The pumps are explosion-proof, fine on a working forecourt and quiet enough to use outside a house after dark.
Bleeding your system with fresh diesel comes at the end. You set off as soon as our engineers have fired it up, and it makes no difference whether your car is on a drive in Histon or in a space outside Cambridge North. It is checked on new diesel to make sure it runs smoothly before our technicians leave. The whole job is done where the vehicle is, so it never has to go to a garage. Insurers want a VAT invoice and an engineer report, and both come at the end.
About Histon, for a moment
Histon is a village situated on the banks of the River Cam in Cambridgeshire, with a low elevation of around 14 metres. Histon lies close to the city of Cambridge, approximately 3.3 miles to the northwest, and is surrounded by nearby villages such as Impington and Girton. Histon has a mix of housing types, but detached homes are particularly prevalent in the area. Histon is also within commuting distance of London, about 52.4 miles to the south.
AdBlue drains across Cambridgeshire, Histon included
Over the CB postcode area, the teams taking AdBlue jobs around Histon reach most of Cambridgeshire too, Impington, Girton and Orchard Park included. Close to a boundary, or somewhere awkward to pin down? Checking is better than assuming, and so ring.
A mobile service suits Histon, a village: there's no need to bring the vehicle to us, since our engineers drain it there, on a driveway, a residential street, a parking area or a forecourt.
Histon: what AdBlue in a diesel tank costs to fix
Every job differs, and so not one single price would be fair. Whether the engine has run, and for how long, comes first in what changes the cost. How much AdBlue got in comes next, and then the location of the vehicle, since an open driveway is easier for a van to get to safely than a tight space behind Village Pump.
With that reason, every call from Histon opens with the same trio — which fluid went in, how much, if it ran — ahead of a quote. Their answers shrink a range down to one figure.
Quoted by phone before the engineer heads out, the job is paid for that day — card or phone, no deposit. Look at your insurance whilst we're on the way: plenty carry misfuelling cover.
Alongside your car in Histon, still?
Then, the most helpful thing to do with your vehicle is to leave it. Ignition off, engine off, keys out. Phone 0333 366 0103 and tell us it's AdBlue, about how much, and if it's run. Petrol in Diesel takes it from there, in Histon or anywhere in Cambridgeshire.