Put Petrol in a Diesel Car in Canonmills? Don't Start It
Do not start the engine. If the fuel is still inside that tank and the engine has not yet been started, a tank drain is almost always all it requires — and that's decided in the next few minutes, not by how much went in. Petrol in Diesel drains and cleans wrong-fuelled cars where they are, throughout Canonmills and the remainder of City of Edinburgh, on the forecourt, by the roadside or on a drive. We will show you what your next move will be. Call us — that happens before anything else.
Petrol in a diesel: what to do first
- Don't fire it up — and don't trust it if it does start. That is the part motorists get wrong about petrol in a diesel in particular. A petrol engine fed diesel generally just cannot run, so the motorist stops and the wear ends with them. A diesel filled with petrol normally starts, idles and drives off without complaint for a couple of miles. It isn't all right. It's grinding your fuel system while you drive.
- Flicking the ignition on often primes your system, and priming is what carries petrol out of your tank and into your pump and injectors. Those are the parts diesel keeps greased on its way through, before it ignites. Petrol handles the burning and none of the lubricating. Leave the ignition alone.
- Topping up clears nothing. It gives you a fuller tank of the same mixture, because a diesel fuel system does not handle petrol by percentage the way that advice assumes — so don't put diesel on top to water down it. Octane is immaterial too: super unleaded is petrol.
- A car that hasn't moved is the simplest one to sort out, and so stay where you are if you reasonably can. Parked on the verge on Canonmills Bridge? Hazards on, and keep it there. A difficult location works for us better than a started engine.
- Keep your position ready before you phone. A postcode that starts EH3 5 and whatever is next to you with a label on it is the difference between a van showing up and our van circling.
- Dial 0333 366 0103. Anticipate three questions — what went in, about how many litres, and whether your car has been turned over. Those responses decide all that comes after.
How many miles you travelled is what we ask about, not how long your vehicle has been sitting — and here's why. Diesel performs two tasks on its way through the engine: it combusts, and before burning it lubricates the high-pressure pump and those injectors. Petrol handles the first only. So a rushed fill on the trip in, the penny dropping at about eleven, and a diesel Renault Megane parked at Edinburgh Waverley since quarter past eight tells us those few miles were covered with your pump running on a fluid stripped of most of its protection. Call us and leave the vehicle exactly where it stands.
A diesel Nissan Qashqai sitting in the parking area outside The Orchard holding a tank full of petrol in it is a simple job, right up until somebody drives it home. Leave the vehicle there overnight then ring us in the morning. Nothing degrades while it stands. What we will want to know is whether that run there was short and chilly, as that is where petrol is least likely to burn properly — and what does not burn can work past the piston rings and into the sump.
The pump is not turning, and so whatever the diesel Mercedes C-Class did on the way to King George V Park, none of it is going on now. Nothing is getting worse whilst it stands. Take your time over this — but never drive the car home to buy any.
Ringing from close to The Atelier Gallery? Three things help us. The filler — which side of the vehicle it's on. Room for our van beside you, without the road being blocked. And whether anything has run since the fill-up. The place itself hardly matters: on-street is where our engineers work most, and we'd far rather have a cramped spot than a car a person has driven somewhere simpler. Then it is a drain for the Dacia Duster, a filter change where there is one worth changing, lines rinsed, clean fuel put round the entire circuit. By now the worst of that is in the lines and not the tank.
What occurs next is the issue. The motor immediately draws the petrol left resting in the fuel filter and the feed lines back round through your pump a second time, since emptying a tank does nothing about fuel that has already left it. Drain it then put fresh diesel in, someone certain will tell you — and that advice is half right, because do it to a diesel Audi A6 parked up, Tanfield Hall say, and the thing starts, which is what makes it sound reasonable. Call us instead. Our technicians flush the system and take the filter off where the vehicle has a serviceable one, and that's the difference between the car being put right and the vehicle only starting.
At a forecourt: draining petrol from the diesel
Most of this work starts at the pump, meaning a fair portion of it ends up finished at one. Still at BP? Then that is typically where it takes place. Garage forecourts are routine for us, with the permission of the station.
Before your engine has started — a forecourt is the single spot the mistake gets spotted. Anywhere else — a car park, a drive, a lay-by — your car was switched on and moved to get there, which means fuel was drawn from the tank, through the fuel filter then into the high-pressure fuel pump. That is not a disaster, and our technicians can still sort it out where it is. It does mean the fuel lines and your filter need flushing as well as your tank, and that is decided by the few seconds between seeing your receipt and going for your key.
The attendants will normally help you move the car clear of the pump so the next motorist can get by. It is worth doing. Starting it over four car lengths? Don't.
Do our engineers serve your side of Canonmills?
As a residential suburb, Canonmills gets a steady call, whilst the places close by come with it on the same trip: Broughton and Stockbridge, Warriston and Inverleith, New Town.
Not on that list? That says nothing. The names above are simply the closest few, and nearly all places around City of Edinburgh have a page of their own elsewhere on our site. Near the border, or anywhere your satnav misreads? Phone and check rather than presuming.
The area this page includes is on the map. Your vehicle never needs to come to us. Our technicians work throughout all of it — roadside, forecourts, driveways, car parks.
Roadside breakdowns across Canonmills
Some people have no safe spot to pull in whatsoever. A common call for us instead of a rare one: realised after setting off, finished up along the verge beside Huntly Street or in a lay-by with the hazards on.
Sit with the motor while it's safe to be inside, but out of the vehicle when it isn't. Never start it up to reach a safer location. It'll go — a diesel on petrol generally obliges — and each mile of obliging drags that blend deeper into the system. We'll bring the van to a difficult spot without any bother, and for your car that's a lot better than carrying on.
So you've run it? Petrol in a diesel over a couple of miles
The M8 is the road which counts now, and it lies under 10 miles from Canonmills. It will usually take you onto it, and some way along, before you notice a thing. Then it is some smoke, a lumpy idle and power draining away — not a clean stop. Wrongly fuelled diesels rarely give you one of those.
Take the first junction that's safe, pull up there, and never start the car to reposition. Long trip? Anything near the under a mile to the closest city and you should suppose the lot — filter, pump, injectors, all of that arrived at by the petrol. Say that on the phone, because it changes what goes in our van.
About Canonmills
Canonmills is a suburban area in the City of Edinburgh, situated near the Water of Leith and close to the Firth of Forth coastline. Canonmills sits at a relatively low elevation of 19 metres, with the city centre of Edinburgh just 0.8 miles away. Canonmills is characterized by its predominantly flat-type housing and its proximity to neighbouring areas such as Broughton and Stockbridge.
Our job in Canonmills, step by step
- Our technicians check what was put in, how much, and if your engine has run. The replies alter the work, which is why we ask before pricing.
- Your tank gets cleared of it.
- Our technicians purge the fuel lines and clean the filter, so what is remaining in the system is not what started the issue.
- Our engineers put new diesel in and prime the system.
- After it's turned on, our technicians make sure it runs correctly on fresh diesel.
Then it is ready to pull away. We do all of this wherever the vehicle has come to a stop, which means it never needs to be taken to a garage, and when it has been noticed quickly, it is very uncommon for there to be long-term damage.
AdBlue in the diesel tank by mistake, in Canonmills?
Do not crank it: that opening rule applies whether what got in was AdBlue or petrol. What changes is the fault itself. Petrol thins your diesel and takes away the protection your fuel system relies on. Urea in water, AdBlue, and in a diesel tank that brings rust and deposits.
AdBlue removal in Canonmills has a page of its own with the details on it, including why it's often the more serious of the two. Our technicians handle both.
Budgeting for a petrol-in-diesel drain in Canonmills
Our engineers cannot put one figure on this page truthfully, since the job isn't one job. What moves it:
- This is the main one: whether the motor has been run, or driven.
- How much of the wrong fuel got in, set against how much that tank can hold.
- Whether it's petrol or AdBlue.
- Where is it? And can a van reach it and work there sensibly?
Tell us what the car is, how much went in, and whether the motor has run. A straight answer comes back, not a range. If it isn't urgent — your car is at home and going nowhere — works too.
Petrol in diesel: common queries in Canonmills
I'm on a forecourt in Canonmills. Can you drain the car here?
Yes, and it's where a big share of this work takes place. Tell us which one you are at when you phone and we will tell you if our engineers can work there. With the station's consent our technicians attend Morrisons and the other forecourts nearby all the time.
A few litres of petrol in a diesel — too much?
Litres aren't the yardstick. Proportion is, and a lot more than either, it counts if anything has been run. Five litres into a nearly dry tank isn't five into a full one, no. But both land on the same query in the end: has that blend been sucked right through, or has it not?
I put petrol in my diesel and drove the vehicle. What next?
Pull over somewhere sensible, switch off, and keep the vehicle off. Driving is what moves the problem from that tank into your pump and injectors — but it is fixable much more often than motorists assume, and the single most useful thing you can do now isn't restart the car.
Fuel drains and manufacturer warranties
It's not a modification, and so a drain then flush carried out properly doesn't invalidate a manufacturer's warranty. Another reason to leave it turned off: running a diesel on petrol is the thing more likely to cause a disagreement with one.
Two-stroke oil in your tank, and then home?
What petrol has diluted is not put back by two-stroke oil, which is an old workaround for a distinct issue. So no. Later? Still petrol in your tank, and a pump that has to put up with the stuff.
Main dealers and petrol in a diesel
There is no need to bring it to a franchised dealer, because we drain and clean your car wherever it is.
Standing next to it?
Turned off is how the car stays.
Already driven it? Then stop somewhere sensible, switch off, and let the car stay that way. A stationary, cold vehicle is the best place to be in, and this is recoverable from a lot more often than people expect.
At the roadside, on the forecourt or at home — call-out fuel draining in Canonmills and across City of Edinburgh.