Petrol in a Diesel Car in Trewoon
Petrol in Diesel drains and cleans wrongly fuelled cars where they stand, on the forecourt, by the roadside or on a drive, throughout Trewoon and the rest of Cornwall. The very first thing to do is not to start the engine. While the motor has not run and the petrol is still inside your tank, a tank drain is nearly always all it requires, and the coming few minutes decide that, not how much got in. Ring us before anything else begins, and you will hear what follows next.
What next? Petrol in a diesel, in turn
- Never start it — and do not believe it if it starts. That is the bit people have wrong about petrol in a diesel in particular. A petrol motor filled with diesel usually just cannot run, so the motorist stops and the harm ends with them. A diesel given petrol generally starts, idles and drives off quite happily for a couple of miles. It isn't fine. It's eating into the fuel system while you drive.
- Leave the ignition alone too. Diesel has two tasks: it combusts, and before it combusts it lubricates that high-pressure fuel pump and the injectors. Petrol manages the first and not the second. Flicking your ignition on is commonly all it takes to prime the system, which moves the petrol out of the tank and into just those components.
- Topping up takes out nothing. It leaves you a fuller tank of the same mixture, since a diesel fuel system does not tolerate petrol by percentage as that advice assumes — so never put diesel on top to weaken it. Grade is immaterial too: super unleaded is petrol.
- Stay where you are if you safely can. A motor that hasn't moved is the easiest one to sort, and we would much rather get to an odd spot than have it started. If you are pulled up on the verge on Tye Hill Close, turn those hazards on then leave the car there.
- Before you ring, gather your position. Anything next to you with a sign on it, plus a postcode starting PL25 5 — that's what decides whether the technician turns up or circles.
- What went in, about how many litres, plus if the engine has run — these three details settle the entire call-out. Dial 0333 366 0103 and tell us.
Tonight, please, instead of Monday. Driving it home is the one thing not to do: a commute has pushed real quantity through your pump already, petrol-thinned diesel and plenty of that, and the return leg would about double the figure to no end. The Renault Clio can stay at St Austell perfectly well. Phone from the platform if simpler; standing over us while our technicians work is not required.
If you have put petrol in your diesel Volkswagen Tiguan in Trewoon and you are now stranded outside Co-op Food with a boot packed with shopping, call us. Don't start it once more to exit the space. We will head your way, empty the tank, rinse your fuel lines and put new diesel in so you can drive home. A mile or so at easy throttle pulls very little diesel, so these are often the straightforward ones.
You will be urged to move the car out of the gateway and fix it later. Don't. On the zig-zags by St Mewan Community Primary School, a wrongly fuelled BMW 3 Series running on diesel is in the way, and that's all it is. Start it three more times being courteous and you have turned a tank into a fuel system: every start primes the lines, every prime draws more petrol past the fuel filter toward the pump. Let them moan. Phone us.
Hire car or company car? Phone them before you ring us — some contracts want the hire firm to authorise the work, and sorting that out first is a great deal faster than sorting it later on. Then ring us about the Ford Kuga close to Kingdom Hall of Jehovah's Witnesses, and do not worry that you can't say how full your tank was. Nearly no one can, in a car they picked up two days ago, and our engineers work it out on site. The reason our engineers ask is that petrol in a diesel does its damage as a share: the same few litres in an almost empty tank is a far stronger blend than in a full one. Petrol is rated on how well it withstands igniting under pressure, which is the opposite of what a diesel needs — so the stronger the mixture, the more it rattles, smokes and goes flat.
A person confident will tell you to drain it then put clean diesel in. Half true, that. Try it on a diesel Citroen C3 by Saint Mewan Church and the engine will start — which is exactly why it sounds like sense. Here's the problem: there is petrol left in your filter and the feed lines, and the first thing your engine does is draw it back through the pump a second time. Emptying a tank achieves nothing about fuel that already left the tank. Ring us. Your system gets cleaned, the fuel filter comes off where there is one worth removing, and that is what separates a fixed motor from one that just starts.
Removing petrol from the diesel on a forecourt
Plenty of this work starts at the pump, which means a big share of it is done on site. The drain usually gets done right there. Still on the forecourt at EG On the Go? Given the site's consent, that's a spot we work, and often.
Nowhere but the forecourt can this be caught with the engine still unstarted. The few seconds between reading the till receipt and going for the keys settle how much requires rinsing. Everywhere other than a forecourt — a car park, a drive, a lay-by — your car was fired up and driven to get there, so fuel was drawn from your tank, through the filter and into the high-pressure fuel pump. That means your lines and your filter need flushing as well as that tank. It's not a disaster, and our engineers can still put it right where the vehicle stands.
Clear of the petrol pump, the next customer can get by — so yes, let the staff help you move the car. Very much worth doing. Four vehicle lengths is not worth the risk.
Can our technicians cover your corner of Trewoon?
St Mewan, Hornick, St Austell, Trelowth, Lanjeth — every one of these on the rounds that carry us over to Trewoon too, a coastal village.
Not on the list? It tells you nothing. The names above are just the closest few, and nearly all places in Cornwall have a page of their own elsewhere on this site. Contact us and enquire rather than guessing — borders above all, and wherever a satnav might get wrong.
The area the page includes appears on our map. Your vehicle does not need to come to us. We work over all of that — roadside, forecourts, driveways, car parks.
Stuck on the kerbside anywhere around Trewoon?
The opportunity to pull in somewhere suitable doesn't fall to everybody. Set off, then realised? Finished up along the verge of Cooperage Road, or stuck in some lay-by with the hazard lights flashing? That's a normal call here. Not an odd one.
Whether you remain beside the car or step away from it rests on if sitting there seems wise. Every mile a diesel obliges you for on petrol drags the mixture further into the fuel system — and oblige it frequently will, which is why your motor doesn't get restarted to limp somewhere handier. A van driving to an awkward spot is no bother for us, and it's much better for the car than driving on.
Run it already? Pull in, then read this
The local M5 is the one that counts now, and runs over 50 miles from Trewoon. It will often get you onto it, and some way along, before you spot a thing. Then it's some smoke, a lumpy idle and power draining away — not a neat stop. Wrongly fuelled diesels seldom give you one of those.
The next safe junction is the one to take. Switch off there, then leave the restarting alone. It affects what our engineers bring, so say so when you call: on a longer drive — anything approaching the under 15 miles to the nearest city — assume the mixture has been through your filter, the pump and your injectors.
A little about Trewoon
Trewoon is a small village in Cornwall, situated near the coast and approximately 11.5 miles from Truro. Trewoon sits at an elevation of around 102 metres, overlooking the surrounding countryside. Trewoon is characterised by its predominantly detached housing stock, reflecting its rural setting. Trewoon is close to nearby places such as St Mewan, Hornick, and St Austell, and is about 219.6 miles west of London.
What comes next when our engineers get to you in Trewoon
- Our engineers find out what got in, how much, and whether the engine has run. The responses change the work, which is why we ask before pricing.
- The tainted fuel comes out of the tank.
- Our engineers flush your fuel lines and clean the filter, and so what is remaining in the fuel system is not what started the trouble.
- Our technicians pour clean diesel in and bleed the system.
- We start the engine and check it runs properly on fresh diesel.
From there, you're ready to pull away. There is no need to go to a garage at any point, since the work is all done where the car is, and when it is noticed soon, lasting damage is very uncommon.
A distinct problem: AdBlue in a diesel tank in Trewoon
AdBlue instead of petrol? Then the opening rule is unchanged — the motor stays off — while this fault beneath it is a different one altogether. Petrol weakens the diesel and removes the lubrication your fuel system depends on. AdBlue is urea in water, and in a diesel tank it brings corrosion and deposits in its place.
AdBlue removal around Trewoon has a page of its own with the full story on it, including why it is usually the more serious of the two. Our technicians cover both.
Paying for a petrol-in-diesel fuel drain around Trewoon
One number wouldn't be fair here, because this isn't one job. These are the things that change it:
- Started? Driven? Either answer matters more than anything else on this list.
- How much of the wrong fuel was put in, set against how much your tank can hold.
- Whether it's unleaded or AdBlue.
- Where your car is, and whether a van can safely reach and work on it.
Tell us what your vehicle is, how much got in, and if your engine has run. A clear answer comes back, not a range. Vehicle at home, going nowhere, nothing pressing about it — is ideal for that.
Petrol in diesel: common questions in Trewoon
Fuel drains on a Trewoon petrol station forecourt
Yes, and it's where a large part of this work gets done. Regularly, provided the site consents: Texaco, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether we can work in that spot is something our engineers answer straight away.
How much petrol in a diesel is too much?
Whether your motor has run matters a lot more, though the ratio matters too, instead of the litres. What settles how much work is needed is if that mix has been sucked through your fuel system — since even though five litres in a nearly empty tank is a different case from five in a full one, either way that is the query.
I drove the car after putting petrol in my diesel. What now?
Turn off somewhere sensible, then keep it that way after you stop. Driving is what moves the issue from your tank into your pump and injectors — but it's fixable far more regularly than motorists expect, and the single most valuable thing you can do now is not restart the car.
Is a fuel drain going to void my warranty?
A manufacturer's warranty survives a drain and flush done to a good standard, which is no change at all. Running a diesel on petrol is the thing likelier to cause a disagreement with one, which is another reason to leave it turned off.
Could I put some two-stroke in and just drive?
What petrol has diluted is not restored by two-stroke oil, which is an old workaround for a different fault. So no. Petrol stays in that tank after that, whatever else goes in, and your pump gets no reprieve from it.
Do I need a main dealer for petrol in a diesel?
There's no need to take it to a franchised dealer, because our engineers drain and clean the vehicle wherever it is.
Is your car still with you?
Keep the engine shut off.
Driven it already? Then somewhere sensible, stop, turn off, and no restarting the vehicle later. A still, cold motor is the best place to be in, and this is recoverable from a lot more regularly than people assume.
Throughout Cornwall and in Trewoon: on-site fuel draining, at home or on the forecourt or at the roadside.