Don't Start It: AdBlue in a Diesel Tank in Knaresborough
With AdBlue in your diesel tank, the ignition remains off and so does the motor. In plain terms, AdBlue is simply urea in water. Unlike fuel, it neither burns nor blends, and no harm happens till your motor pulls it round. A drain and a thorough flush, done where your car is in Knaresborough, is usually all AdBlue in a diesel tank takes — if it is caught before the engine has run. Before you do anything else, phone 0333 366 0103.
Those opening minutes: AdBlue in your diesel tank around Knaresborough
Things to do:
- So nobody can turn your ignition on, pull the keys out.
- Put the hazard lights on if you're at all near moving traffic.
- Keep the receipt or the empty bottle, and so you can tell us what went in and about how much.
- Ring just where you are. Say a HG5 0 postcode or the closest street sign, and nobody has to search for you.
Not to do:
- No starting your engine — not for a second, not to reposition the vehicle.
- Many diesels power their pump the moment your ignition comes on, so keep the vehicle off.
- No more fuel on top. The AdBlue will not blend, and so it is wasted.
- Even a short distance down Park Row is too far to drive the car.
- Emptying that tank on your own by the road isn't one to try.
The attendants on duty at any Knaresborough filling station — the Asda included — will normally lend a hand pushing it aside if you ask. On that drive, the vehicle stays just where it was left.
AdBlue in a diesel tank: what it does
Made for your exhaust, AdBlue has no business in the engine. Its own reservoir holds it, and from there it's sprayed into the exhaust, and there it cleans the gas. 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 acts very differently from fuel. It does not mix in. It drops, since it is heavier than diesel, and settles low where the pickup takes its supply from. A car topped up on a drive in Thistle Hill yesterday evening and not started since counts as the straightforward case. Nothing has pulled the AdBlue up so far — but once the engine turns, that is what goes first, directly from the bottom of that tank.
Once it's pulled in, the damage takes two forms. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it is corrosive to some of the metals a fuel system is made from, and so it keeps running on the parts it gets to for as long as it remains there. Where the AdBlue has reached the lines, waiting till morning around Knaresborough makes it worse. Inside that tank only, time costs nothing. Then there's the water: it brings no lubrication to the parts that rely on it the most — the high-pressure pump and every injector.
Why is AdBlue in a diesel frequently the bigger fault?
An issue of thin fuel is what you get from fuelling a diesel with petrol at the Morrisons. Harm just comes from running on it. Mixed into your diesel and sitting inside your tank, it causes none.
The trouble with AdBlue in a diesel is a completely wrong substance. It does not burn, and so it cannot simply be run through. It does not stay mixed, 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 matters more with AdBlue than with petrol, and why starting the engine "to see" costs more here than nearly anywhere else, whether your car is in Forest Moor or the middle of Knaresborough.
As with petrol, there is good news. Emptying a tank is the easiest part on a fuel system, and without start-up, the AdBlue remains in there — anywhere in North Yorkshire your vehicle sits.
Knaresborough: how AdBlue ends up in a diesel tank
Nobody means to do it. The AdBlue filler on plenty of vehicles rests right next to your diesel filler, sometimes under the same flap, and the two caps can look alike in poor light. It mostly happens outside the house, from a container bought en route home, rather than at the forecourt.
Mostly, it takes place in one of a couple of familiar ways. Rushing, outside Knaresborough St John's Church of England Primary School, after a warning light came on during the school run, someone refills your car. A driver pours the container in outside their house, just off High Street, as the day ends. Otherwise, in dim light by So! Bar, your car is refilled by a driver using that flap for the first time.
The least familiar vehicles get it most — rentals, new cars, fleet ones, and the other vehicle of a family with both fuels. An identical mistake, an identical first response — keep it off — anywhere you happen to be around Knaresborough or the rest of North Yorkshire.
Started the motor with AdBlue in your diesel tank around Knaresborough?
Then that tank is no longer where the AdBlue is. Via the filter, along the lines, and — with any running — into the injection pump and every injector: that's where it travels.
Expect lumpy running, exhaust smoke, falling power, lights on the dash, or a stall — returning from Mediterranean Garden, perhaps, or part way across Knaresborough. Stop when safe. Turn off. Keep the vehicle off rather than testing it again. More of that is pulled through with each start.
Knaresborough sits under 5 miles from the A1(M); if you were on it, leave at the first junction and stop safely instead of carrying on.
How far it went counts. A couple of hundred yards across Knaresborough to the car park by Albert Holch Memorial Garden is a very different job from a run towards Ripon, under 10 miles away, with the AdBlue reaching further into the fuel system with every mile. Approximately how far had it come? Tell us.
Wherever the vehicle came to a stop is where all of it gets done, even with more to clean out after your engine has been run. Caught early, it very seldom leaves lasting damage.
What does an AdBlue drain on a diesel involve in Knaresborough?
The car remains put, whether that is a street beside Tree Memorial plaque, a driveway, a lay-by or a filling station around Knaresborough, and the van comes to it. What got in, about the quantity, and whether your engine has turned over: our technicians ask before all else, since those shape the work.
Then your tank is drained where the car sits, and so the contaminated fuel and the AdBlue come out together. With AdBlue, more so than with petrol, flushing counts: the fuel system is cleaned right through because what remains will not flush out unaided. Fresh diesel goes in after the fuel filter is cleaned — or replaced, when it needs to be — and after that the car is tested. Roughly half an hour once we arrive is usual for most jobs when your engine has not run. Quiet enough to use outside a house at night, and fine on a busy forecourt, our pumps are explosion-proof.
Last, the system is primed with clean diesel. Whether it's a parking space by the nearest station or a drive around Knaresborough, that is where our engineers fire it up and you head off. Before we go, our engineers check it is running smoothly with fresh diesel in. Our engineers do it all wherever the car has stopped, and it never needs to go to a garage. Your insurer is likely to want an engineer's report and your VAT invoice — both yours once this job is done.
About Knaresborough itself
Knaresborough is a town in North Yorkshire, situated on the River Nidd at an elevation of 79 metres, with a mix of semi-detached housing and other residential properties. Knaresborough lies approximately 9 miles from Ripon and 181 miles from London, making it a commuter town with a strong sense of community. Knaresborough has a population of around 14054 people, with nearby places including Tentergate, Calcutt, and New Scriven. Knaresborough is characterised by its riverside setting, which has influenced its development over time.
AdBlue drains across North Yorkshire, Knaresborough included
Tentergate, Calcutt and New Scriven are among the towns near Knaresborough that the same teams serve, along with most of North Yorkshire further out, throughout the HG postcode area. Near a boundary, or anywhere awkward to pin down? Asking is better than assuming, so phone.
Knaresborough is a riverside town, and an on-site drain suits it: whether the car is on a home drive, a residential street, a car park or a forecourt, our technicians drain it where it sits, and so it never needs to be moved to us.
Knaresborough: what AdBlue in a diesel tank costs to fix
Because each callouts vary, a flat figure would not be fair. What changes the cost is, firstly, whether the motor has run and for how long; then how much AdBlue got in; and then where your car is and whether a van can get to it safely, which is easier on an open driveway than in a tight spot behind Gracious Street Methodist Church.
Ahead of a figure, never afterwards, every enquiry from Knaresborough begins with the same three checks: the liquid, the quantity, plus if it ran. The replies turn a range into a straight quote.
Quoted on the call before the engineer heads out, it is paid for on the day — card or phone, no deposit. Many insurance policies include misfuelling cover, and so it's worth checking yours while we're on the way.
Still next to the car around Knaresborough?
Right now, the most helpful thing to do with your car is to not touch it. Keys out, motor off, ignition off. Say it was AdBlue, about what quantity, and if the engine ran, on 0333 366 0103. After that Petrol in Diesel takes over, in Knaresborough or anywhere in North Yorkshire.