AdBlue in the Diesel Tank in Colchester? Keep It Switched Off
With AdBlue in your diesel tank, your ignition stays off and so does the motor. Water with urea mixed in it: that's AdBlue. As it is water-based, it won't ignite and won't blend with diesel; trouble only comes once your pump starts pulling it. In Colchester, AdBlue in a diesel tank caught before the motor runs usually comes down to a drain and a thorough flush, just where your car is. Ring 0333 366 0103 before you do anything else.
What to do straight away, Colchester: AdBlue in your diesel tank
Do these:
- Pocket the keys, which stops anyone switching the power on.
- If you are anywhere close to moving traffic, put the hazard lights on.
- The empty bottle or your receipt tells us the fluid and the amount, and so don't throw it away.
- Give us a postcode starting CO1 1, or whatever street is nearest, and our van finds you straight — so ring from wherever you are.
Never do these:
- Don't start the motor, even for a moment to move the car.
- Turning the key to ignition by itself starts the pump running on plenty of diesels. Skip it.
- AdBlue doesn't dilute in diesel — it separates out — so adding extra fuel won't thin it.
- Leave the car where it is instead of driving it anywhere, even a short distance up West Stockwell Street.
- Beside the road, do not attempt draining it on your own.
The staff working at any Colchester filling station — the Texaco included — will normally help rolling it clear if you ask. On your own driveway, don't touch it at all.
AdBlue in a diesel tank, and what it does there
The engine is not what AdBlue is made for; your exhaust is. From a dedicated reservoir it is fed straight to your exhaust, cleaning what the engine emits. Not one side suits the other: urea doesn't belong in a pump, and an injection pump can't take urea.
Inside a diesel tank it behaves really differently from fuel. It does not mix in. It sinks, because it is heavier than diesel, and settles down where the intake draws its supply from. A car topped up on a driveway in Old Heath yesterday evening and left unstarted is the simple one. No pump has sucked the AdBlue up so far — but when your motor turns, that is what is pulled first, directly from the bottom of your tank.
Two kinds of damage come from there. Crystals and corrosion. As the water dries, it strands urea that crystallises in filters and narrow passages; and, because it attacks some metals, each part it reaches keeps suffering for as long as it stays in there. Where the AdBlue has reached the pipework, leaving it till morning in Colchester makes it worse. Inside that tank alone, time costs nothing. Diesel lubricates the injection pump and every injector as it flows; water gives no lubrication, and that is a second kind of damage.
Petrol or AdBlue in a diesel: why AdBlue is often worse
Petrol put into a diesel on Asda's forecourt makes your fuel thin — that is the whole issue. Harm just comes from driving on it. Blended into your diesel and sitting inside that tank, it causes none.
AdBlue in a diesel is a different problem: not thin fuel, but no fuel at all. Not burning, it can't just be run through. Whether your car is in Mile End or the heart of Colchester, firing it up "to see" does more harm in this case than almost any other error, and the flush counts for more. The reasons: it won't remain mixed, so diluting it is impossible; and deposits and corrosion outlast the following fill.
The good news is the same as with petrol. Never started? Then the AdBlue waits just in the tank, the easiest bit of the entire system to clear, wherever your vehicle has stopped across Essex.
How does AdBlue end up in a diesel tank in Colchester?
In dim light, two caps side by side — the AdBlue cap and the diesel one, occasionally under one flap — can appear the same. Nobody intends it; many designs invite it. A bottle bought while driving home and poured in at home, instead of at the filling station, is the usual route.
Usually, it occurs in one of a few familiar ways. Rushing, outside St John's Green Primary School, after a warning light flashed on during the school run, someone tops up the vehicle. A bottle is poured in at the end of the day on a drive just off East Stockwell Street. Or a driver new to that flap refills the car in dim light, parked in the car park by Camulodunum.
The least familiar cars see it the most — rentals, new cars, fleet cars, and the spare motor in a family with both fuels. Wherever in Essex, Colchester included, the mistake does not change, and nor does the first response: leave it off.
AdBlue in the diesel tank around Colchester, and the engine started?
Then the tank is no longer where the AdBlue is. Through the fuel filter, through the lines, and — given any running — into the injection pump and each injector: that's where it has gone.
Watch for lumpy running, exhaust smoke, lost power, warnings on your dash, or a cut-out — returning from Rose garden, say, or midway across Colchester. No restarting to test: pull over once safe, then switch it off. More of that is pulled through with each start.
On the M11, under 50 miles from Colchester, the first junction is where to leave, and anywhere sensible is where to park — not driving on.
A quick hop across Colchester to the car park by Twinkle, Twinkle, Little Star. is one matter; driving towards Chelmsford, under 25 miles away, is something else, because each mile carries the AdBlue further in. So mileage counts. About how far it had come is worth telling us.
Wherever your car came to a halt is where all of it gets done, even with more to flush once your engine has been run. When it's spotted early, permanent damage is very uncommon.
Draining AdBlue in a diesel around Colchester: what it takes
Anywhere it has come to rest in Colchester — a filling station, a layby, a drive, a road beside Colchester Town Hall — the van travels to your vehicle. The work depends on three replies, and our technicians ask for first — what went in, the amount, and whether your engine has run.
On the spot, your tank is then drained, and all of the contaminated diesel and the urea come out as one. With AdBlue, more so than with petrol, flushing matters: the whole system is flushed right through because what remains won't flush out by itself. Clean diesel goes in after the fuel filter is cleaned — or swapped, if it needs to be — and then the car is tested. If your engine has not run, most jobs take about half an hour once we are there. The equipment is explosion-proof, and so a live forecourt is no problem, and it's hushed enough for a residential street after dark.
Priming the fuel system with new diesel comes at the end. You set off as soon as we have started it, and it makes no difference whether the vehicle is on a driveway around Colchester or in a bay outside Colchester Town. Our engineers check it runs correctly on fresh diesel before we go. Our engineers do it all wherever the car has stopped, and it never needs to go to a workshop. At the end, there is the paperwork for your insurer: a VAT invoice plus a written report from the engineer.
About Colchester, briefly
Colchester is a city situated in the north-east of Essex, England, with a scenic riverside setting. It is a significant urban centre in the region, known for its rich history and cultural heritage. Located near the coast, Colchester is an important part of the local government district that bears its name, covering a large area beyond the city itself. The city has a distinct identity, with residents proudly referred to as Colcestrians.
AdBlue drains across Essex, Colchester included
Abbey Field, Braiswick and The Hythe are among the towns near Colchester that the same vans reach, together with much of Essex beyond, over the CO postcode area. If you are close to a border, or somewhere hard to describe, ring and ask instead of assuming.
Anywhere the car stands — a drive at home, a residential street, a parking area, a filling station — our technicians empty it there, and there's no need to bring it to us; that suits Colchester, a city, well.
AdBlue in a diesel tank around Colchester: the cost of fixing it
Every job differs, so not one single price would be fair. Three things shift the cost: whether the engine has been running and for how long, how much AdBlue got in, and where the vehicle is. That last one turns on whether our van can get to it safely, and an open driveway is simpler than a tight spot behind Walking Woman.
Ahead of a quote, never afterwards, each enquiry from Colchester begins with three questions: the liquid, the amount, plus whether the engine ran. Those replies turn a range into a straight quote.
Priced by phone before the engineer heads out, the job is settled on the day — card or phone, nothing in advance. Plenty of insurance policies include misfuelling cover, so it's worth checking yours whilst we're on the way.
Next to the vehicle around Colchester, still?
Then the most handy thing you can do is nothing to the vehicle. Engine off, keys out, ignition off. Phone 0333 366 0103: AdBlue, roughly how much, plus if the engine ran is all our technicians need. Petrol in Diesel takes over the remainder throughout Essex, Colchester too.