Sparkford Hill: Put Petrol in a Diesel Car?
Petrol in Diesel drains and cleans misfuelled cars where they are, on the forecourt, by the roadside or on a private drive, all over Sparkford Hill and the rest of Somerset. The first thing to do is not to start the engine. When the motor has not turned over and the fuel is still in your tank, a tank drain is nearly always all it needs, and the coming few minutes settle that, not how much was put in. Just one ring our way is plenty: our technicians will explain what happens next. Do it straight away.
Your first five minutes: petrol in a diesel
- Whenever you drive, your pump and the fuel injectors wear down. This is why you never start the car, and why you never rely on it once it has started. The thing about petrol in a diesel specifically — the bit people get wrong — is that it drives away happily for the first mile or two. Diesel in a petrol engine typically cannot run at all, which stops the motorist and stops the damage with them. This one lets you drive on.
- Diesel combusts, and before it burns it lubricates — that injection pump, those injectors. Petrol does only the burning. So leave your ignition alone also: turning it on is frequently all it takes to prime your system, and priming pulls petrol from the tank into exactly those components.
- Do not tip diesel on top to weaken it. A diesel fuel system won't accept petrol by percentage as that advice assumes, and topping up removes nothing — it simply leaves you a bigger tank of the same mix. The type makes no difference either: super unleaded is just petrol.
- Stay where you are if you safely can. A car that hasn't moved is the quickest one to sort, and our team would rather get to an odd place than have it started. If you are stopped on the verge on Wolfester Terrace, switch your hazards on then keep it there.
- A van turning up rather than circling turns on two things: a postcode that starts BA22 7, and whatever is next to you with a label on it. Get both ready before you ring.
- What got in, roughly how much, and also whether the motor has run — the three details decide the entire call-out. Call 0333 366 0103 and tell us.
Petrol in a diesel Renault Megane, sat outside Castle Cary since first thing? The wait has cost you nothing — fuel in a tank is harmless. It was the run in that pushed weakened diesel through the pump. Phone before you move the vehicle.
Here's what a job in the car park at The Sparkford Inn generally looks like. Our engineers get to your car, ask what got in, roughly how much, and whether the engine has run since — those three answers decide most of the work. Then the contaminated mixture comes out of the tank, the fuel lines get flushed, and the filter comes off where your Mercedes C-Class has a replaceable one. New diesel goes in and the system is primed. Then our technicians fire it up, check it runs smoothly, and you set off.
Happy on the way out, flat on the way back. If that is how the drive to Sparkford Hill Copse went, that tank is the place to look. Petrol dilutes diesel, and weaker fuel slips past the close-fitting components that are supposed to build injection pressure — so the further the BMW 5 Series travelled, the less well it held that pressure. Pull in somewhere sensible, turn off then phone us.
Hire car? Company car? Phone them before us. Some contracts want the firm to authorise the work, and that is much faster dealt with up front than later. Then ring us about the Citroen C3, the diesel one, by St Mary Magdalene. Don't worry that you cannot say how full your tank was — nearly no one can two days into a motor, and it is something our engineers establish there. The reason for asking: harm from petrol in a diesel is a matter of share. A few litres in an almost empty tank make a far stronger mixture than in a full one, and petrol is built to resist the very thing a diesel needs of it, which is igniting when compressed. Stronger mixture, more knocking, more smoke, flatter throttle.
Somebody certain will tell you to drain the car and put clean diesel in. Only half right, that. Try it on a diesel Volvo XC60 near Queen Camel Memorial Hall and your engine will start — which is precisely why it sounds like sense. Here's the problem: there is petrol left in your filter and the feed lines, and the first thing the motor does is draw it back through your pump once more. Emptying a tank achieves nothing about fuel that already left the tank. Call us. The circuit gets cleaned, the fuel filter comes off where there is one worth removing, and that's what separates a repaired vehicle from one that simply starts.
Clearing petrol from your diesel on a forecourt
Pumps are where the job often begins, and where a good portion of it ends. The drain normally gets done on the spot. Still on the forecourt at Shell? Given the site's permission, that is a spot we work, and often.
At a forecourt, the mistake is halted with your engine never fired, and no place else does it. The few seconds between reading the till receipt and going for your key decide how much requires rinsing. Anywhere other than the forecourt — a car park, a driveway, a lay-by — your car was fired up and driven to get there, so fuel was sucked from your tank, through the fuel filter and into the high-pressure pump. That means your lines and your filter need rinsing as well as that tank. It is not a disaster, and we can still deal with it where your car stands.
The staff will usually help you move it away from the petrol pump so the next customer can get past. That is worth doing. Four car lengths is not worth the risk.
Sparkford Hill and the areas near it
Queen Camel, Sparkford, Camel Hill, Eyewell, Weston Bampfylde — each of those on our trips that bring us out to Sparkford Hill itself, a rural hamlet.
There are dedicated pages for nearly all places around Somerset, and the ones named above are simply the nearest neighbours — so yours being missing from this list says nothing whatsoever about if our technicians come. Contact us and check rather than presuming, particularly where you're on the border or anywhere the satnav can't find.
Use this map for the area shown on this page. The car never needs to travel to us. Our technicians work throughout every bit of that — kerbside, forecourts, driveways, car parks.
Broken down at the kerbside around Sparkford Hill
Not everybody gets a decent spot to pull in. If you worked it out after setting off and landed on the verge on A359, or at a lay-by somewhere with the hazards on, that's a normal call for us rather than an unusual one.
Clear of the car when it's not sensible to sit inside, beside it if it is. Don't restart the engine to nurse the vehicle somewhere handier — a diesel running on petrol will frequently oblige, and every mile it obliges for is dragging that mix further into your fuel system. Carrying on causes the vehicle far more harm than a van heading out to a difficult place, and that is no problem for us.
A couple of miles on petrol in a diesel: what next?
Here is where your M5 counts, under 25 miles from Sparkford Hill. A wrongly fuelled diesel will frequently get you onto it and some distance along before anything feels wrong, while the signs when they come are normally lost power, a rough idle and some smoke instead of a neat stop.
Take the first exit that is safe, stop there, and don't start it to reposition. Suppose the worst of that on a long drive. Anything approaching the under 15 miles to the nearest city, and the contamination has been through the filter, through your pump, through the fuel injectors. Say so when you phone. What our technicians bring changes.
A little about Sparkford Hill
Sparkford Hill is a small hamlet situated on the riverside in Somerset, with an elevation of around 51 metres. Sparkford Hill lies near the villages of Queen Camel and Sparkford, and is close to Camel Hill. Sparkford Hill is characterized by its predominantly detached housing stock, and is located approximately 12.8 miles from the city of Wells.
What our engineers do when our engineers arrive with you around Sparkford Hill
- Three things get asked before any quote — the fuel that was put in, the quantity, and whether anything has been run since. Each answer changes the work.
- The polluted mixture is drawn from your tank.
- Fuel lines are purged through and your filter cleared, leaving nothing in your system that created any of this.
- Fresh diesel goes in, and then your system gets primed.
- It's run with new diesel in it, and our technicians confirm that it is running correctly.
At that point it is ready to pull away. There's no need for a garage at any point, since the work is all done where the car is, and when it's caught soon, long-term damage is very rare.
AdBlue in your diesel tank instead, in Sparkford Hill?
The problem isn't the same, though the first instruction is — don't crank it — if what was put in was AdBlue rather than petrol. Diluted diesel, and no protection left for the fuel system that relies on it. That's petrol. Urea in water, AdBlue, and in a diesel tank that brings corrosion and build-up.
Often the more serious of the two, AdBlue — and the detail lives on its own Sparkford Hill page. Both are ours to deal with.
Budgeting for a petrol-in-diesel drain in Sparkford Hill
Honestly, no single price belongs on a page like this. The job changes. Here is what varies it:
- This is the main one: whether the motor has been started, or driven.
- How much of the wrong fuel went in, weighed against how much that tank can hold.
- AdBlue or petrol, whichever was put in.
- Whether a technician can safely get to the car and work on it, which depends on where the car is.
The car, the quantity, whether it has run — give us those and the answer comes back straight rather than as a range. Not urgent, with the vehicle at home and going nowhere? Then works.
Things our technicians hear about petrol in diesel around Sparkford Hill
I'm on a forecourt in Sparkford Hill. Can you drain the vehicle on the spot?
Much of what our technicians do happens nowhere else. So yes. Often, provided the site consents: Esso, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether we can work in that location is something our technicians answer on the spot.
Is there a safe quantity of petrol in a diesel?
Whether the motor has run counts much more, though the ratio matters too, rather than the litres. Five litres in an almost empty tank is a different matter from five in a full one — but either way, the thing that determines how much work is required is whether that mixture has been pulled through your fuel system.
Already driven it with petrol in the diesel? What now?
Stop safely. Off. Nothing after that. It's salvageable a lot more frequently than drivers expect, even though driving is what shifts the issue from the tank into your pump and injectors — and the single most useful thing you can do now is not restart it.
My warranty — does a fuel drain void it?
It isn't a change, so a drain and flush carried out properly does not cancel a manufacturer's warranty. An argument over a warranty is likelier to come from running a diesel on petrol — so leave it switched off.
Adding two-stroke oil, then driving home
What petrol has thinned is not restored by two-stroke oil, which is an old fix for a separate fault. So no. Your pump still has to cope with it, because that tank still has petrol in it later on.
Do I need a main dealer for petrol in a diesel?
Not at all. Our engineers drain and clean your car wherever it is, so there is no need to take it to a franchised dealer.
Still with the car?
Do not switch it on again.
Driven it already? Then somewhere sensible, stop, turn off, and no restarting the vehicle later on. Cold, still, going nowhere: that's the best position to be in. Drivers fear this a lot more than they need to.
Throughout Somerset and in Sparkford Hill: mobile fuel draining, at home or on the forecourt or at the kerbside.