Don't Start It: AdBlue in a Diesel Tank in Codmore
AdBlue in your diesel tank? Then leave the engine off — and your ignition too. Chemically, AdBlue is simply urea in water. Not like fuel, it neither ignites nor mixes, and no harm happens till your motor sucks it through. Caught before your motor has run, AdBlue in a diesel tank is normally a drain and a thorough flush, done where the vehicle is in Codmore. Phone 0333 366 0103 before you do anything else.
Codmore, AdBlue in your diesel tank: what to do straight away
Do:
- Keys out — that way nobody can switch anything on.
- Hazards on, if moving traffic is anywhere close.
- Which fluid, and about what quantity? Hang on to the bottle or the till receipt, and our technicians will see.
- Ring just where you are. Quote a HP5 3 postcode or the nearest street sign, and no one has to hunt for you.
Don't:
- No starting your motor — not briefly, not to shift the car.
- Your ignition stays off: on many diesels, switching it on is enough to run the pump.
- Do not top up with diesel to thin it. AdBlue doesn't dilute in diesel; it separates out.
- Any driving at all is to be avoided, even a short stretch down Cedar Close.
- Do not try to drain the car yourself by the roadside.
At a forecourt in Codmore, whether it's the Shell or another one, ask the staff to help you roll the vehicle away from the pump. At home, the vehicle stays exactly as it is.
AdBlue in a diesel tank: what it does
AdBlue is made for the exhaust, not the motor. It goes into its own tank and is sprayed into your exhaust gas to clean it. Nothing in it is supposed to pass through a fuel pump, and nothing in a fuel pump is designed to handle it.
Inside a diesel tank it behaves very differently from fuel. It does not mix in. It's heavier than diesel, and so it sinks and gathers at the bottom of your tank, which is where the pickup sucks fuel from. The first thing your fuel system pulls through, after it runs, is the AdBlue. So a vehicle that had AdBlue poured in on a drive in Lye Green last night, and hasn't been started since, is still the simple case: the AdBlue is lying at the bottom of the tank, and nothing has drawn it in.
From there it causes two kinds of harm. What is left once the water evaporates is urea, which forms crystals: they lodge in tiny channels and block filters. Worse, it attacks some metals in the fuel system, and keeps going until it's cleared out. A motor left sitting in Codmore with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank is not. Water lubricates nothing. The high-pressure pump and every injector need diesel running past them, and so the water content harms them by itself.
AdBlue in a diesel: why it is often worse than petrol
Top up a diesel with petrol by mistake at the Applegreen, and this issue is diluted fuel. Mixed into the diesel and left still, it is harmless at that stage; running your engine does the damage.
With AdBlue in a diesel, the fluid as such is plainly the wrong one. It cannot just be run through, since it does not burn. Nor can it be thinned, because it separates again — and the next fill won't clear away crystals or corrosion. So the flush matters for more with AdBlue, and turning your key "to see", in the heart of Codmore or out in The Broadway, costs more than almost any other error.
With AdBlue, the good news is no separate from petrol. Emptying a tank is the easiest job on a fuel system, and without running, the AdBlue stays in it — wherever in Buckinghamshire the vehicle has stopped.
How does AdBlue end up in a diesel tank around Codmore?
Nobody means to do it. The AdBlue filler on plenty of cars sits right next to the diesel filler, sometimes under the same flap, and the two caps can look alike in poor light. Mostly it's never the filling station: a driver picks up a bottle driving home and tips it in at home.
A couple of familiar ways account for most cases. A warning light comes on during the school run, and the top-up takes place in a hurry outside Brushwood Junior School. In the evening, a container is tipped in on a driveway close to Lye Green Road. Or a driver new to that flap tops up the car after dark, stopped in the car park by Hen and Chickens.
Rented cars, brand-new motors, company motors, or the spare car in a home with both fuels: the least known vehicles get it the most. Same mistake, an identical first response — leave it off — wherever you happen to be around Codmore or the rest of Buckinghamshire.
Already started the motor with AdBlue in the diesel tank in Codmore?
If so, the AdBlue is no longer inside that tank. Given any running, it travels to the high-pressure pump and each injector, after passing through the fuel filter and lines.
Perhaps returning from Hollybush Wood, or midway across Codmore, your engine might run lumpy, smoke, drop pace, light up the dash or cut out. Pull over when safe. Switch off. Leave the vehicle off instead of testing it again. Each start pulls more of that through.
On the M25, under 10 miles from Codmore, the first junction is where to leave, and somewhere safe is where to stop — not carrying on.
How far it went counts. A few hundred yards across Codmore to the car park by Chesham Leisure Centre is a very different job from a run towards St Albans, under 15 miles away, with the AdBlue reaching further into the fuel system with every mile. Roughly how far it had come is worth telling us.
Wherever the car came to a stop is where all of it gets done, even with more to clean out after the motor has been run. Lasting damage is very uncommon if it's spotted quickly.
Emptying AdBlue in a diesel in Codmore: what it takes
Wherever it has stopped in Codmore — a forecourt, a layby, a driveway, a street beside Emmanuel — our van comes to your vehicle. Three replies decide the work, so first our technicians ask which fluid was put in, about what quantity, and if the motor has turned over.
The polluted diesel and the urea come out as one after the tank is emptied, right there. With AdBlue, more so than with petrol, flushing counts: the whole system is cleaned right through because residue will not wash out unaided. Testing your car comes at the end, after fresh diesel goes in and the fuel filter gets cleaned or, where necessary, swapped. Most of these jobs are a half-hour job once our technicians turn up, provided your motor hasn't run. Explosion-proof pumps mean a live forecourt sensible to work on, and they run quiet enough not to disturb the neighbours at night.
Finally, the system is primed with clean diesel. Firing it up comes next, and then you drive off from where the car is parked, at Amersham or on a driveway in Codmore. We confirm it runs smoothly on fresh diesel before leaving. As the job is done in full where the vehicle is, a garage never comes into it. Your insurer will want an engineer's report and the VAT invoice — both yours once this job is done.
About Codmore itself
Codmore is a suburban area in Buckinghamshire, situated inland at an elevation of 161 metres, with semi-detached housing being the predominant type of accommodation. Codmore lies approximately 24.6 miles from London and 11.4 miles from St Albans, placing it within commuting distance of both cities. Codmore is surrounded by other suburban areas, including Hilltop, Newtown, and Griffitts Yard, and has a population of around 2925 residents. Codmore's location in the South East region of England makes it part of a larger urban and rural landscape.
Codmore and Buckinghamshire: AdBlue drains across the area
Over the HP postcode area, the vans answering AdBlue jobs in Codmore reach much of Buckinghamshire as well, Hilltop, Newtown and Griffitts Yard among them. If you're close to a border, or somewhere hard to describe, ring and ask rather than assuming.
A mobile service fits Codmore, a residential suburb: you have no need to bring your car to us, because our engineers empty it there, on a driveway, a residential street, a parking area or a forecourt.
AdBlue in a diesel tank in Codmore: the cost of fixing it
Because the callouts vary, a flat price wouldn't be fair. Whether your engine has been running, and for how long, comes first in what changes the price. How much AdBlue went in comes next, and then the location of your car, because an open drive is easier for our van to reach safely than a tight space behind White Hill Centre.
Ahead of any quote, not after, each call from Codmore begins with the same three checks: the liquid, the amount, plus if the engine ran. When they are answered, a range becomes a single fixed number.
Before anyone heads out, you hear our price on the phone. And payment is on the day, card or over the phone, with nothing upfront. Check your insurance whilst we're on the way: plenty carry misfuelling cover.
In Codmore and still alongside the vehicle?
Then the most useful thing you can do is nothing to your car. Keys out; engine and ignition off. Petrol in Diesel handles the remainder, across Codmore or wherever in Buckinghamshire, once you call 0333 366 0103 to say it's AdBlue, roughly what quantity, and whether the engine ran.