Put Petrol in a Diesel Car in Pathhead? Don't Start It
Don't start the engine. While the fuel is still inside your tank and the motor has not run, a drain is nearly always all it needs — and that's decided in the next few minutes, not by how much went in. Petrol in Diesel drains and flushes wrongly fuelled cars where they sit, across Pathhead and the remainder of Midlothian, on the forecourt, by the roadside or on a driveway. Our engineers can explain what your next move is. Call us — it happens before anything else.
What to do first about petrol in a diesel
- While you drive, the pump and your injectors wear. This is why you never start it, and why you never trust it once it has started. The trick about petrol in a diesel specifically — the part people get wrong — is that it pulls away normally for the first mile or two. Diesel in a petrol engine usually won't run at all, which stops the motorist and stops the harm with them. This one lets you drive on.
- Leave your ignition be as well. Diesel does two tasks: it burns, and before it burns it lubricates that injection pump and the injectors. Petrol handles the first and not the second. Turning your ignition on is frequently sufficient to prime the system, which pulls the petrol out of the tank and into precisely those components.
- Don't water down it. Diesel added on top clears nothing, so all you have is more of what was already there, since percentage isn't how a diesel fuel system copes with petrol. Super unleaded? Still petrol. The octane makes no difference.
- A car that hasn't shifted is the simplest one to deal with, and so remain where you are if you reasonably can. Pulled up on the verge on Main Street? Hazards on, then leave it there. A tricky spot works for us better than a started engine.
- Our van showing up rather than circling turns on two things: a postcode beginning EH37 5, and whatever is next to you with a name on it. Get both ready before you ring.
- Phone 0333 366 0103. Let us know what went in, approximately how many litres, and also whether the motor has run. These three facts decide your whole job.
Petrol in a diesel Renault Megane, sitting at Gorebridge since first thing? The wait has lost you nothing — fuel sitting in a tank is dormant. It was the journey in that pushed thinned diesel through your pump. Ring us before you drive it.
Put diesel in a petrol vehicle and mostly it will not run, so the person stops there and the harm stops with them. Flip it — petrol into a diesel — and the thing starts, idles and drives off as though nothing had happened, while your high-pressure pump works without the lubrication the fuel is meant to be supplying. That is the catch, and it's why your diesel Peugeot 3008 will have felt completely ordinary coming back from the local primary school. They do. From the driver's seat there's nothing to warn you about, so nothing alerts you. Phone us with roughly how far you travelled, and how hard; the second one counts more than the first.
Normal on the way out, flat on the way back. If that's how that run to Ford Glen went, the tank is the place to look. Petrol thins diesel, and thinner fuel slips past the precision components that are meant to build injection pressure — so the farther the Vauxhall Astra drove, the less well it held that pressure. Stop somewhere sensible, switch off then call us.
Hardly ever the trouble, the location. On-street is the commonest location we work, and a tight parking bay is far preferable to a motor that has been driven somewhere more convenient. What does help, when you phone from near Pathhead Village Hall, is three things: the side the filler is on, whether a van can stand beside without blocking the road, and if anything has run since you filled up. Then your Mercedes A-Class gets cleared, the filter changed where a workable one exists, the fuel lines cleaned and clean fuel put through the whole system — since by now the worst of it is in the fuel lines, not that tank.
A couple of streets, then it stopped. Throttle soft, idle uneven, and the diesel Kia Sportage is parked up close to Cranstoun Church. The motor is not giving up — that softness is fuel that won't build pressure. There's no light on the dash for it, and so cars like yours usually get driven a second time before anybody picks up the phone. Don't. Off, and phone us.
Removing petrol from your diesel on the forecourt
Much of the job starts at a pump, so a big part of that ends up finished there. Our technicians work on garage forecourts all the time, with the station's permission, and so if you are still at Esso that is normally where this drain happens.
Before your engine has run — a garage is the one place the mistake ends up spotted. We can still put it right where it sits, even away from the forecourt. In a car park, on a driveway or in a lay-by, the car has been switched on and moved there, and that drew fuel through the fuel filter and into the high-pressure fuel pump, right from the tank. None of that is a disaster, although the flush then has to go past your tank to your lines and the filter, and the few seconds between seeing your receipt and going for the key are what decide that.
Staff will generally help out pushing it clear of the petrol pump, which lets the next motorist get past. Accept the assistance. Four car lengths is not worth a start.
Areas we cover in Pathhead
Those same rounds get us to Dewartown, Edgehead, Crichton, Chesterhill and Newlandrig along with Pathhead, which is a village.
Not on this list? That tells you nothing. The places above are simply the closest few, and nearly all places around Midlothian have a page of their own somewhere on this site. Presuming is the mistake to skip, especially on a border or somewhere a satnav goes wrong. Call us and check.
The ground this page spans sits on this map. We work roadside, at forecourts, on driveways and at car parks across all of it, and your vehicle never needs to move to us.
Stranded by the kerbside anywhere around Pathhead?
The opportunity to stop somewhere safe does not come to everybody. Hazards flashing at a lay-by somewhere, or pulled onto the verge on Oxenfoord Drive because you worked it out after setting off — our technicians take that call often enough that it's the ordinary kind.
Stay beside the car if it's wise to be inside, yet out of it when it isn't. It will frequently oblige. A diesel running on petrol limps along perfectly willingly, and that is the trouble: start it up to get to somewhere handier and the mix goes further into the system with every mile travelled. Our van driving to a tricky place is no problem for us, and it's much better for the car than pressing on.
A couple of miles on petrol in a diesel: what next?
This is where the M8 comes in, under 15 miles out of Pathhead. A drop in power, an uneven idle, smoke: those are the signs when they arrive, instead of a clean stop — and a misfuelled diesel will often take you onto it and some way along before anything feels wrong at all.
Never start it to reposition. Get off at the next sensible exit then turn off. Long run? Anything near the under 15 miles to the nearest city and you should presume the lot — filter, pump, injectors, all of it arrived at by the contamination. Say that on the call, as it affects what goes in the van.
About Pathhead
Pathhead is a village situated on the riverside in Midlothian, with a mix of semi-detached housing and other residential properties. Pathhead sits at an elevation of 156 metres, near the towns of Dewartown and Edgehead, and is located approximately 10 miles from Edinburgh. Pathhead has a population of around 797 people, and its location near the Scottish capital makes it a commuter base for those working in Edinburgh. Pathhead is also close to other nearby places, including Crichton.
Once we get to you around Pathhead: what happens
- The responses alter the work, which is why we ask before giving a price: what went in, how much of it, and if your motor has run.
- We empty that tank of all the polluted mixture.
- Fuel lines are purged through and the fuel filter cleaned, leaving nothing in your system that caused any of this.
- Fresh diesel goes in, and then the system gets bled.
- It's fired up with fresh diesel in it, and our engineers make sure that it is running smoothly.
From that point, you're ready to pull away. All of it is done where your car is, so it never needs to be taken to a workshop, and when it has been noticed soon, long-term damage is very unusual.
A different job: AdBlue in a diesel tank in Pathhead
AdBlue instead of petrol? Then the opening rule is unchanged — the engine remains off — whereas this issue under it is a distinct one altogether. Diluted diesel, and no protection left for the system that depends on it. That is petrol. AdBlue? Urea dissolved in water. Pour that in with your diesel and you get rust instead, plus build-up.
Our technicians cover both, and AdBlue removal around Pathhead has its own page with the detail — including why it's often the more significant of the two.
Budgeting for a petrol-in-diesel fuel drain around Pathhead
One figure wouldn't be honest here, because this isn't one job. These are the things that move it:
- Whether your engine has been run or driven. This is the big one.
- How much of the wrong fuel went in, against how much the tank takes.
- AdBlue or unleaded, whichever got in.
- Whether our van can safely get to your car and work on it, which depends on where the vehicle is.
Tell us what your vehicle is, how much got in, and if your engine has run. A clear answer comes back, not a range. For your car at home that's going nowhere and is not pressing, works too.
Petrol in diesel questions from Pathhead motorists
At a petrol station around Pathhead, can you do a fuel drain there?
Plenty of what our engineers do takes place nowhere else. So yes. Agreement from the site is the condition. Given that, a forecourt like BP is somewhere we're frequently, along with the rest of them locally — so name yours on the call and you will hear whether working there is possible.
Is there a sensible quantity of petrol in a diesel?
Proportion decides it rather than litres — and more than either, whether your motor has run. Five litres in a nearly empty tank is a distinct situation from five in a full one — but either way, the thing that settles how much work is needed is if that mixture has been drawn through the fuel system.
I put petrol in my diesel and drove it. What next?
Turn off somewhere safe, then keep it that way after you stop. It is recoverable a lot more often than motorists expect, even though driving is what moves the issue from the tank into the pump and injectors — and the single most useful thing you can do now is not restart it.
Is a fuel drain going to void my warranty?
A drain then flush carried out properly is not a modification and doesn't invalidate a manufacturer's warranty. Running a diesel on petrol is the thing likelier to cause an argument with one, which is another good reason to leave the vehicle turned off.
Could I put some two-stroke in and just drive?
No. It belongs to a separate issue from a separate era, and petrol has thinned something no oil of that kind replaces. After that? Still petrol in that tank, and a pump that has to put up with the stuff.
Main dealers and petrol in a diesel
Not at all. Our engineers drain and flush the car wherever it is, so there's no need to bring it to a main dealer.
You, and your car, still together?
Leave the car shut off.
Driven it already? Then somewhere safe, stop, switch off, and no restarting it after that. Cold, stationary, going nowhere: that's the best position to be in. Drivers fear this a lot more than they need to.
Call-out fuel draining around Pathhead and across Midlothian — at the roadside, on the forecourt or at home.