Don't Start It: AdBlue in a Diesel Tank in Wembley
AdBlue in your diesel tank? Then leave your engine off — and the ignition as well. Urea mixed in water is what AdBlue is. It does not burn, it doesn't mix with diesel, and the harm it does begins when the fuel system pulls it in. In Wembley, AdBlue in a diesel tank caught before your engine runs normally means a drain and a thorough flush, just where the car is. Phone 0333 366 0103 before you do anything else.
AdBlue in your diesel tank around Wembley: the first few minutes
Things to do:
- Keys out — that way nobody can power anything on.
- Hazards on, if moving traffic is anywhere close.
- So you can tell us which liquid it was and about what quantity, keep your receipt or the empty bottle.
- Ring us from where you are. A postcode starting HA9 7, or the name of the closest street, gets the van to you without a search.
Never do these:
- No starting the motor — not for a second, not to shift the car.
- Do not switch your ignition on. On many diesels that alone runs the fuel pump.
- Adding more diesel does not work: AdBlue settles out rather than thinning.
- Even a short distance up Park Lane is too far to drive the car.
- By the road, don't attempt emptying it yourself.
Moving your car away from the island is a job for staff to help with, whichever Wembley forecourt you are on, the Esso included. On your own drive, do not move it at all.
What does AdBlue do in a diesel tank?
The motor isn't what AdBlue is made for; the exhaust is. From a dedicated tank it goes straight to the exhaust, cleaning what the engine lets out. A fuel pump is not made to take it, and AdBlue was never intended to go through one.
Inside a diesel tank it behaves very differently from fuel. It does not mix in. It is heavier than diesel, so it sinks and gathers at the bottom of the tank, which is where the pickup draws fuel from. The first thing the system pulls through, after it runs, is the AdBlue. So a vehicle that had AdBlue poured in on a drive in Stonebridge last night, and has not been started since, is still the simple case: the AdBlue is lying at the bottom of the tank, and nothing has pulled it in.
After it's drawn in, the damage comes in two forms. It attacks some metals found in fuel systems, working on any part it reaches until it's removed completely. And when the water goes, the urea turns into crystals that clog filters and settle in narrow channels. By daybreak, a vehicle parked around Wembley with AdBlue in its lines grows worse; if it's just in that tank, it doesn't. Then there's the water: it brings no protection to the parts that rely on it the most — the injection pump and every injector.
Petrol or AdBlue in a diesel: why AdBlue is frequently worse
An issue of thin fuel is what you end up with from filling a diesel with petrol at the Shell. No harm comes as long as it stays unused, blended into the diesel — only once the motor works on it.
AdBlue in a diesel is a different problem: not thin fuel, yet no fuel at all. Since it doesn't burn, running it through isn't an option. Deposits and corrosion remain after the next tankful, and AdBlue splits again out of the diesel, so watering it won't help. That is why the flush counts so much, and trying the engine "to see" does more harm with AdBlue than almost any other mistake — in Preston or the centre of Wembley alike.
With AdBlue, the good news is no separate from petrol. If your engine hasn't run, the AdBlue is still in your tank, and that tank is the easiest part of a fuel system to clear, wherever around Greater London the vehicle is standing.
AdBlue in a diesel tank around Wembley: how it ends up there
Nobody means to do it. The AdBlue filler on plenty of cars sits right next to your diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. A container picked up while heading home and tipped in at home, instead of at the forecourt, is the usual story.
The ways it happens are few and familiar. A warning light comes on during the school run, and the top-up happens in a hurry outside Park Lane Primary School. A bottle is poured in at the end of the day on a drive just off High Road Wembley. Or a driver new to that flap refills the car after dark, stopped in the car park outside The Liquor Station.
The least known cars see it most — rentals, new ones, fleet cars, and the other vehicle of a family with one of each fuels. An identical mistake, same first step — leave it switched off — wherever you are in Wembley or the remainder of Greater London.
AdBlue in the diesel tank around Wembley, and your engine started?
If so, the AdBlue is no longer in the tank. It's been sucked through the fuel filter and your lines, and if the motor ran for any time, it has reached the high-pressure pump and the injectors.
Maybe returning from King Edward VII Park, or part way across Wembley, the engine might run rough, smoke, drop pace, light up the dash or stall. Stop when safe. Turn off. Leave the vehicle off rather than restarting it to check. With each start, more of it is pulled through.
Wembley lies under 3 miles from the M1; if you were on it, exit at the next junction and pull up safely instead of driving on.
Distance counts: every mile pushes the AdBlue deeper in, and so heading towards Westminster, under 10 miles away, gives a much bigger job than hopping across Wembley to the car park by Park Lane Methodist Church. Approximately how far had it come? Tell us.
Once the 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 soon, permanent damage is very unusual.
What does an AdBlue drain on a diesel involve in Wembley?
Anywhere it has come to rest around Wembley — a filling station, a lay-by, a driveway, a road beside Patidar House — the van travels to your car. Three answers shape the job, so before anything else our technicians ask which fluid got in, roughly what quantity, and whether the motor has run.
Next, draining that tank on the spot removes the contaminated diesel along with the AdBlue together. What remains from AdBlue won't wash away by itself, so the fuel system gets a careful flush, which matters far more with urea than for petrol. The fuel filter is cleaned, or replaced where it needs to be; clean diesel goes in; and the vehicle is tested. Roughly half an hour once we arrive is typical for most jobs where your motor hasn't run. Quiet enough to use outside a house at night, and safe on a working forecourt, our pumps are explosion-proof.
The last step is to bleed your system on fresh diesel. Then our technicians start it and you set off, whether from a parking space outside Wembley Central or a drive in Wembley. The check before our technicians head off is that it runs properly on fresh diesel. We do it all wherever the vehicle has stopped, and it never has to go to a workshop. Insurers ask for a VAT invoice and an engineer report, and you get both at the end.
About Wembley, for a moment
Wembley is a locality in northwest London, situated near the River Brent and the Grand Union Canal. Wembley sits at an elevation of around 50 metres, approximately 7.8 miles from central London. Wembley is characterized by its predominantly flat-type housing and is surrounded by nearby places such as Alperton, Wembley Park, and Tokyngton. Wembley has a population of around 9803 residents.
AdBlue drains around Wembley and across Greater London
The teams that answer AdBlue calls around Wembley also cover the places around it, Alperton, Wembley Park and Tokyngton among them, and most of Greater London beyond, across the HA postcode area. Close to a boundary, or anywhere tricky to pin down? Checking beats guessing, and so ring.
A van that comes to you fits Wembley, a small village: you have no need to take the vehicle to us, since our engineers drain it on the spot, on a driveway, a side street, a car park or a forecourt.
AdBlue in a diesel tank in Wembley: the cost of fixing it
Not one single price would be fair, because each job is different. Three things move the price: whether your engine has run and for how long, how much AdBlue went in, and where the car is. That last one rests on whether our van can reach it safely, and an open driveway is easier than a tight space behind TK Maxx.
That's why each call from Wembley 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 shrink the range down to a single figure.
You get that quote on the phone, before anyone heads out, and you pay on the day, by card or over the phone, with nothing upfront. As our engineer is travelling, dig out your policy: plenty cover misfuelling.
Wembley: still next to the car?
Then the most handy thing you can do is nothing to the car. Keys out; motor and ignition off. Ring 0333 366 0103 and tell us it is AdBlue, roughly how much, and if it has run. Petrol in Diesel takes it from there, in Wembley or anywhere in Greater London.