Don't Start It: AdBlue in a Diesel Tank in Cottenham
With AdBlue in your diesel tank, your ignition remains off and so does the engine. AdBlue is urea mixed in water. It doesn't burn, it doesn't mix with diesel, and the damage it does begins when the fuel system pulls it in. Caught before your motor has run, AdBlue in a diesel tank is generally a drain and a thorough flush, done where the vehicle is in Cottenham. Call 0333 366 0103 before you do anything else.
What to do right now, Cottenham: AdBlue in the diesel tank
To do:
- Keys out — then no one can switch anything on.
- Close to moving traffic? So put the hazards on.
- Which product, and roughly how much volume? Hang on to the bottle or your receipt, and we can see.
- Call right where you are. Quote a CB24 8 postcode or the nearest street sign, and nobody has to search for you.
Not to do:
- Moving your car just a short way is no reason to fire up the motor.
- Do not switch the ignition on. On plenty of diesels that alone runs the fuel pump.
- AdBlue doesn't mix in diesel — it separates out — so adding extra diesel will not weaken it.
- Keep the car where it is rather than driving it anywhere, even a short stretch down Denmark Road.
- Don't try to drain it yourself by the kerbside.
On a forecourt in Cottenham, whether it is the Rampton Motors or another one, ask the attendants to help you push the car away from the petrol pump. If you are on your own drive, leave the vehicle just where it sits.
AdBlue in a diesel tank, and what it does there
AdBlue is made for the exhaust, not the motor. From a separate reservoir it is fed straight to the exhaust, treating what the engine lets out. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is designed to handle it.
It does not combine. Once it's poured into a tank of diesel, AdBlue acts nothing like diesel. Denser than diesel, it drops and collects below it — the very place the pickup draws from. When the system runs, the AdBlue is top of the list to be pulled through. Before then it waits beneath the diesel, which is why a car topped up in Histon last night and not switched on stays the straightforward case, as long as nobody turns the key.
It does two kinds of harm from there. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it's corrosive to some of the metals a fuel system is made from, so it keeps working on the components it gets to for as long as it stays there. Pipes holding AdBlue spell damage by morning for a car parked around Cottenham. Only inside that tank, it stays stable. Water lubricates nothing. The high-pressure pump and every injector need diesel running past them, and so the water content harms them by itself.
Why AdBlue in a diesel is frequently more serious than petrol
Top up a diesel with petrol by mistake at the BP, and the problem is diluted fuel. Damage only comes from running on it. Blended into your diesel and sitting in that tank, it does nothing.
The trouble with AdBlue in a diesel is a completely unsuitable liquid. It doesn't burn, so it cannot just be run through. Deposits and corrosion remain after the next fill, and AdBlue splits again from your diesel, and so watering it won't work. Hence the flush counts more, and trying your engine "to see" does more harm with AdBlue than nearly any other slip — in Impington or the centre of Cottenham alike.
The good news is the same as with petrol. Clearing a tank is the simplest job on a fuel system, and with no start-up, the AdBlue remains in there — anywhere around Cambridgeshire your vehicle sits.
Cottenham: how AdBlue ends up in a diesel tank
Many vehicles put the AdBlue cap beside the diesel cap, occasionally under a single flap, and in dim light the two may appear the same. No one means it. A container picked up when driving home and poured in outside the house, instead of at the forecourt, is the usual story.
The ways it takes place are few and familiar. A warning light comes on during the school run, and the top-up occurs in a hurry outside Cottenham Primary School. After work, a container is tipped in on a drive near Lyles Road. Or the vehicle is topped up in the car park at The Chequers, in poor light, by a person who has never opened that flap before.
The least known cars see it most — rentals, brand-new ones, company cars, and the other car in a family with one of each fuels. Anywhere in Cambridgeshire, Cottenham included, the slip doesn't change, and nor does the first response: leave it off.
Cottenham: started the engine with AdBlue in your diesel tank?
If so, the AdBlue is no longer inside the tank. Your filter and pipework have had it sucked through, and any running takes it on to the injection pump and every injector.
Lumpy running, smoke from the exhaust, dropping power, dashboard lights or stalling: each might show up, maybe midway across Cottenham or returning from The Moat. Once you safely can, pull over then turn everything off — with no turning it on again to test. Each start pulls more of that through.
If you were on the M11, under 5 miles from Cottenham, come off at the next exit and stop somewhere sensible instead of pressing on.
Every mile carries the AdBlue deeper in. That is why crossing Cottenham to park near Cottenham Community Centre and a drive of under 10 miles towards Cambridge are very different jobs. Roughly how far it had come is worth telling us.
Once your engine has run, the flush takes in more, and all of it is done where your car has come to a stop. When it's spotted quickly, permanent damage is very rare.
What emptying AdBlue from a diesel involves in Cottenham
The car remains put, whether that's a road near Cottenham Sports Centre, a driveway, a layby or a filling station around Cottenham, and the van comes to it. The work rests on three answers, and our engineers get before all else — what went in, the quantity, and whether the motor has run.
Then that tank is emptied where the car waits, so the polluted fuel and the AdBlue come out together. The system is cleaned thoroughly, which counts more with AdBlue than with petrol, because what it leaves behind doesn't rinse out on its own. The filter is flushed, or replaced where it needs to be; fresh diesel goes in; and your car is tested. Not run? Then expect about half an hour on site for most jobs. Explosion-proof pumps make a live forecourt sensible to work on, and they're quiet enough not to disturb the street at night.
Last, your system is primed with clean diesel. Then our technicians fire it up and you head off, whether from a parking bay outside Waterbeach or a drive in Cottenham. It's checked on fresh diesel to make sure it runs correctly before we head off. As the job is done in full where the vehicle is, a workshop never comes into it. Insurers want a VAT invoice and an engineer report, and both come afterwards.
About Cottenham
Cottenham is a village in Cambridgeshire, situated approximately 5.5 miles north of Cambridge, and Cottenham sits in a low-lying area near the River Great Ouse. Cottenham has a population of around 2833 people, and Cottenham is characterized by its predominantly detached housing stock. Cottenham is also close to nearby villages such as Rampton, Landbeach, and Westwick, and Cottenham is about 54.8 miles from London.
AdBlue drains across Cambridgeshire, Cottenham included
AdBlue jobs in Cottenham go to teams that serve the places around it — Rampton, Landbeach plus Westwick — and much of Cambridgeshire further out, throughout CB postcodes. If you're close to a border, or somewhere hard to describe, ring and ask rather than guessing.
Cottenham is a rural village, and a call-out drain suits it: whether the vehicle is on a home drive, a residential street, a car park or a forecourt, our engineers drain it where it sits, so it never needs to be moved to us.
What AdBlue in a diesel tank costs to put right around Cottenham
Since the callouts differ, a flat figure would not be fair. The cost changes first with how long, if at all, the motor has been running, and next with the quantity of AdBlue that was put in. After that it depends on where the car is and whether a technician can reach it safely, which is simpler on an open drive than in a tight space behind the far end of the built-up part.
That is why every call from Cottenham starts with the same three queries, asked before giving a figure, not after: what was put in, how much, and if it has run. Those replies turn a range into a straight quote.
The price is given on the call, before anyone leaves; settling up comes on the day, by card or by phone, and nothing upfront. Check your insurance whilst we're on the way: plenty include misfuelling cover.
Next to your car in Cottenham, still?
Then, do nothing — that is the best step available. Keys out, engine off, ignition off. Say it's AdBlue, about what quantity, and if it ran, on 0333 366 0103. From there Petrol in Diesel takes over, across Cottenham or wherever in Cambridgeshire.