South Ashford: Put Petrol in a Diesel Car?
Petrol in Diesel drains and cleans wrong-fuelled cars where they are, on the forecourt, by the roadside or on a drive, across South Ashford and the rest of Kent. The very first thing to do is not to fire up your engine. While the engine has not turned over and the fuel is still sitting in your tank, a drain is nearly always all it takes, and the coming few minutes settle that, not how much was put in. Phone and we can tell you what happens from here before you attempt any more.
Your first five steps: petrol in a diesel
- Feed a petrol engine diesel and it will typically fail to run at all, so the driver stops there and so does the wear. Give a diesel petrol and the car starts, it ticks over, it drives off — fine for several miles. Most people have that reversed, which is the part they get wrong about petrol in a diesel in particular. So do not fire it up. And if started, don't depend on it: the fuel system is grinding whenever you drive.
- Flicking the ignition on commonly primes that system, and priming is what pulls petrol out of your tank then into your pump and injectors. Those are the parts diesel keeps protected on its way through, before it ignites. Petrol handles the burning and none of the protecting. Leave the car's ignition off.
- Do not put diesel on top to water down it. A diesel fuel system will not accept petrol by percentage the way that advice implies, and topping up clears nothing — it simply gives you a larger tank of the same mixture. The type makes no difference either: super unleaded is just petrol.
- A motor that has not moved is the easiest one to handle, and so wait where you are if you safely can. Stopped on the verge on Christchurch Road? Hazards on, then leave it there. An awkward spot suits us better than a started diesel.
- Get your position prepared before you call. A postcode that starts TN23 7 and whatever is next to you with a label on it is the difference between a van arriving and our van circling.
- What got in, roughly how much, plus whether the motor has run — those three details determine your whole visit. Ring 0333 366 0103 and tell us.
Pump-side drains for petrol in a diesel
Plenty of the work starts at a forecourt, so a large chunk of that ends up done at one. The drain generally happens right there. Still on the forecourt at BP? Given the site's consent, that's a place we work, and often.
At a forecourt, the mistake gets spotted with your engine never fired, and nowhere else does it. Our engineers can still sort it out where it sits, even away from the forecourt. In a car park, on a private drive or in a lay-by, the vehicle has been switched on and driven there, and that drew fuel through the fuel filter then into your high-pressure pump, all the way from your tank. None of that is a catastrophe, but the flush then has to go past the tank to the lines and the fuel filter, and the few seconds between checking the receipt and going for the key are what determine that.
Attendants will generally help out pushing it out from the petrol pump, which lets the next driver get past. Welcome the offer. Cranking it just to move four car lengths is not.
Diesel Renault Megane. A couple of litres of unleaded. Driven a couple of miles. Switched off now, at Aldi. That's the enquiry we like, because the point beneath it's about volume through the pump rather than hours on the clock.
Your diesel Peugeot 308 will have felt perfectly normal on the way back from Victoria Road Primary School. They do, and that is the catch with petrol in a diesel and not the other way round. Put diesel in a petrol vehicle and it usually won't run, so the motorist stops and the damage stops with them. Put petrol in a diesel and it starts, idles and pulls away as though nothing has happened — meanwhile the high-pressure pump works without the lubrication the fuel is supposed to be providing. Nothing warns you, since from the driver's seat there's nothing to warn you about. Call us with roughly how far you drove and how hard you pushed it; the second one counts more than the first.
Your BMW 5 Series stays where it is in the car park by The Locomotive for the whole job, which generally runs like this. First we ask what went in, about how much, and whether your engine has run since, given that most of the work rests on those replies. That tank is emptied of the polluted mix, your lines are cleaned, and the filter comes off if it is a replaceable one. With clean diesel in and the fuel system bled, the car is started and tested, and once it's running smoothly you pull away.
Here's the full process. Diesel needs enough body to seal the close gaps it goes through, and petrol takes that away. That's it. Which explains the normal Bowens Field call — a diesel Vauxhall Astra, out there without complaint and back down on power, lumpy at idle, maybe a bit of smoke. Injection systems work hydraulically as well as chemically, and so your fuel has to hold pressure and not just burn; diluted, it escapes past those gaps instead of building, and delivery comes poorer, later, less even than the motor was built around. Not a failing engine, though. Fuel that has stopped behaving like diesel. Put that right and it stops.
By this point the tank isn't where most of the problem is. Once a diesel has run, that mixture is in the filter, the fuel lines, your pump and its rail — and it doesn't come back out with your tank contents. A diesel Mercedes B-Class that got by M&S Outlet needs your system cleared, not cleared.
Parts our team reach near South Ashford
South Ashford is a residential suburb, so our vans get out to it and to the villages by it on the same journeys: Beaver, New Town, Ashford, Brookfield and St Georges Square.
Not on the list? That means nothing. The places above are just the nearest few, and most places across Kent have a page of their own somewhere on our site. Phone to check instead of assuming, particularly where you are on the boundary or anywhere your phone struggles with.
That map shows the area the page spans. Kerbside, forecourt, private drive, car park: the lot is territory we work on, and none of it requires the vehicle to come to us.
Roadside stops around South Ashford
Some people find no sensible place to stop whatsoever. Hazards on at a lay-by somewhere, or pulled onto the verge of Beaver Road because you worked it out after setting off — we take that call so often that it's the usual kind.
Fine where you are? Sit beside it. Not okay? Move out and clear of it. It will frequently oblige. A diesel running on petrol limps along perfectly willingly, and that's the catch: fire it up to reach somewhere safer and the mix goes further into the fuel system with every mile travelled. However inconvenient the spot, it is no trouble for us to come to it, and that's a lot better for the vehicle than pressing on.
Petrol in a diesel, and the vehicle has moved
Your M20 is the one that matters here, and it runs under 3 miles from South Ashford. Some distance along, and onto it in the first place: a misfilled diesel will frequently manage both before anything feels wrong. What you get then is rarely a tidy stop. Power ebbs away, the idle goes rough, and there may be smoke.
Pull off at the next safe exit, turn off, and do not start it to move it. Presume the worst of it on a long trip. Anything near the under 15 miles to the nearest city, and the contamination has been through the filter, through your pump, through your injectors. Say so when you phone. What our engineers bring changes.
Where's South Ashford?
South Ashford is a suburban area situated on the River Great Stour in Kent, with a mix of terraced housing and local amenities. South Ashford sits at an elevation of 39 metres, close to the town centre of Ashford and near the villages of Beaver and New Town. South Ashford is located near the city of Canterbury, which is approximately 13 miles away, and is part of the wider Ashford urban area. South Ashford has a population of around 4936 residents, living in a variety of predominantly terraced homes.
Once our engineers reach you in South Ashford: what follows
- Three things get established before any quote — your fuel that went in, the amount, and whether anything has been run since. Each answer alters the work.
- The tank gets emptied of it.
- We purge the fuel lines and clear the fuel filter, and so what's remaining in the fuel system is not what created the problem.
- We put fresh diesel in and bleed the system.
- We fire it up and check it runs smoothly on fresh diesel.
That leaves the car ready to set off. Long-term damage is very rare when it has been noticed soon, and because everything is done where your car is, it never needs to go to a workshop.
AdBlue in a diesel tank in South Ashford is a different problem
AdBlue instead of petrol? Then the opening rule is unchanged — the engine remains off — while this fault under it's a separate one altogether. Thinned diesel, and no protection left for the system that depends on it. That's petrol. Urea dissolved in water, AdBlue, and in a diesel tank that leads to rust and deposits.
Both are ours. There's a separate South Ashford page for AdBlue removal, with the details on it — including the reasons it often turns out to be the worse of the two.
What a petrol-in-diesel fuel drain costs around South Ashford
One number wouldn't be honest here, as this isn't one job. These are the things that shift it:
- Whether the motor has been run or driven. This is the main one.
- How much of the wrong fuel got in, set against how much the tank can hold.
- Which was put in: petrol or AdBlue.
- Whether our van can sensibly get to your vehicle and work on it, which depends on where the vehicle is.
The vehicle, the amount, whether it has run — give us those and the answer comes back clear instead of as a range. If it's not urgent — your car is at home and going nowhere — is fine too.
South Ashford drivers ask us these about petrol in diesel
I am on a forecourt in South Ashford. Can you drain the vehicle on the spot?
Yes — forecourts are where a fair share of this gets done. Our technicians work at eg and the other forecourts nearby regularly, with the owner's permission — tell us which one you're at when you call and we will tell you if we can work there.
How much petrol is too much for a diesel?
It hinges on the ratio rather than the litres, and much more on whether your motor has run. Five litres in a nearly empty tank is a separate matter from five in a full one — but either way, the thing that settles how much work is required is whether that mixture has been drawn through the system.
I put petrol in my diesel and drove it. What now?
Turn off somewhere sensible, and keep it that way after you stop. Driving shifts the issue along — out of the tank, into your pump and injectors. Drivers fear it a good deal more than the recovery rate warrants, mind. The one truly useful thing left to you is not restarting the vehicle.
Fuel drains and manufacturer warranties
A manufacturer's warranty survives a drain and flush done to a correct standard, which is no change at all. Running a diesel on petrol is the thing likelier to cause a dispute with one, which is another reason to leave it switched off.
Can I just add two-stroke oil and drive home?
No. Two-stroke oil is an old fix for a distinct problem and it does not replace what petrol has weakened. Your pump still has to live with it, since that tank still has petrol in it later.
Does petrol in a diesel have to go to a main dealer?
There is no need to bring it to a dealership, because we drain and clean the car wherever it is.
Still with your vehicle?
The engine remains off.
If you have already driven the car, pull in somewhere sensible, turn it off then keep it off. A stationary, cold vehicle is the best place to be in, and this is recoverable from much more regularly than drivers expect.
At the kerbside, on the forecourt or at home — on-site fuel draining in South Ashford and throughout Kent.