Portreath: Put Petrol in a Diesel Car?
Petrol in Diesel drains and flushes misfuelled cars where they sit, on the forecourt, by the roadside or on a drive, all over Portreath and the rest of Cornwall. The first thing to do is not to fire up the motor. While the engine has not yet turned over and the petrol is still inside your tank, a drain is nearly always all it takes, and the next few minutes decide that, not how much was put in. Our engineers shall tell you what the following step will be. Ring us — that comes before anything else.
What to try first about petrol in a diesel
- Whenever you drive, the pump and the fuel injectors wear. That's why you never fire it up, and why you do not trust it once it has started. The trick about petrol in a diesel specifically — the part drivers get wrong — is that it pulls away fine for the first mile or two. Diesel in a petrol engine generally cannot run at all, which stops the motorist and stops the damage with them. This one lets you drive on.
- Switching the car's ignition on commonly primes the system, and priming is what moves petrol out of your tank then into the pump and injectors. Those are the components diesel keeps protected on its way through, before it combusts. Petrol manages the burning and none of the protecting. Leave your ignition alone.
- That advice supposes a diesel fuel system copes with petrol by percentage. It will not. Put diesel on top and nothing at all is removed; what you have is a bigger tank of the same blend. And no, the type makes no difference — super unleaded is just petrol.
- Stay put if it is wise to. Hazards on, ignition off, leave the car. Wherever you have stopped — the verge on Sunnyvale Road, anywhere — a difficult location for us is better than a started motor, and nothing is quicker for us to deal with than a vehicle that never shifted.
- Get your whereabouts prepared before you dial. A postcode that starts TR16 4 and whatever is next to you with a name on it is the difference between a van turning up and our van circling.
- Phone 0333 366 0103. Prepare for three questions — what was put in, roughly how much, plus whether the engine has been turned over. Your responses settle all that comes after.
The drive in is what sucked weakened diesel through the pump. Standing still has pushed nothing. Petrol in a diesel Volkswagen Golf, sitting at Redruth all day, waits idle in your tank whilst it waits. Phone us first — before your keys come out.
The awkward part is the bay, not your fuel. Vehicles either side of you, a trolley shelter behind, and from time to time a height bar on the way in that decides if our van can get to you at all — so when you phone from a car park like the one at Costcutter, say how much space there is about you and which way round the car is. Those our engineers cover regularly. Should there be no space to work alongside the diesel Renault Clio, it gets moved with your engine off, and not out of fuss over a few seconds of running: priming takes place at every start, more of that mix leaves your tank for your pump, and two shunts into a nicer space have silently made a harder job of what was just a motor sitting still.
Your Audi A4 stays where it is in the car park by Portreath Arms for the whole job, which usually goes like this. First we ask what got in, about how much, and whether the engine has run since, given that most of the work depends on those replies. That tank is emptied of the polluted mix, your lines are rinsed, and the filter comes off if it's a replaceable one. With fresh diesel in and your system primed, your car is fired up and tested, and once it's running properly you pull away.
Your pump isn't turning, and so whatever the diesel Mercedes C-Class did on the way to Pumping Station Park, none of that is happening now. Nothing gets worse whilst it sits. Take your time over this — but never drive the vehicle home to buy any.
Drain it then put clean diesel in — that is the suggestion you will get, normally from someone sure of themselves, and it's half right. Do exactly that to a diesel Ford Fiesta by Picnic Area and it would start, which is what makes the advice sound reasonable. What occurs next is the problem: the engine immediately draws the petrol left waiting in your filter and the feed lines straight back through your pump, as emptying a tank does nothing about fuel that has already left it. Ring us instead. We flush the system and take the fuel filter off where the car has a workable one, which is the difference between your car being put right and the car simply starting.
Removing petrol from a diesel at the forecourt
It begins at the pump, generally. Frequently the work wraps up on site too. Still at Morrisons? Then that's typically where it gets done. Station forecourts are everyday for us, with the agreement of the site.
Before your engine has run — a garage is the only spot this ends up spotted. Everywhere else — a car park, a private drive, a lay-by — your car was switched on and moved to get there, which means fuel was pulled from your tank, through the fuel filter and into your high-pressure pump. That is not a calamity, and our technicians can still deal with it where it stands. It does mean your lines and your filter need cleaning as well as that tank, and that's determined by the few seconds between checking your receipt and reaching for the key.
Clear of the petrol pump, the next motorist can get through — so yes, let the staff help you roll the vehicle. Worth doing. Cranking the car just to move four car lengths is not.
Coverage around Portreath
As a coastal village, Portreath gets a regular visit, and the places close by go with it on the same run: Nance and Paynters Lane End, Tolvaddon Downs and Illogan, Park Bottom.
There are separate pages for nearly all places across Cornwall, and the ones mentioned above are merely the immediate neighbours — so yours being absent from that list tells you nothing at all about if we come. Assuming is the mistake to resist, especially on the boundary or anywhere the satnav fails. Call us to ask.
Use this map for the ground included on this page. Kerbside, forecourt, private drive, car park: every bit of it is ground we work on, and none of it needs the car to move to us.
Stuck on the kerbside in Portreath
A chance to stop anywhere sensible does not fall to everyone. A normal call for us instead of an unusual one: realised after setting off, ended up by the verge of Penberthy Road or in a lay-by with the hazards going.
Stay by your car while it is safe to sit inside, yet out of the car if it isn't. It will frequently oblige. A diesel running on petrol limps along perfectly willingly, and that's the catch: start it up to get to somewhere handier and that mixture goes further into the fuel system with every mile travelled. However difficult the place, it is no bother for us to come to it, and that is much better for your car than carrying on.
A couple of miles on petrol in a diesel: now what?
This is where your M5 comes in — over 50 miles from Portreath. Some way along, and onto it in the first place: a misfilled diesel will often do both before anything feels wrong. What you get then is seldom a clean stop. Power falls away, the idle turns uneven, and there may be some smoke.
Never restart it to move it. Pull off at the first sensible exit and turn off. Suppose the worst of that on a long drive. Anything approaching the under 15 miles to the closest city, and the contamination has been through the filter, through the pump, through your injectors. Mention it when you phone. What we bring changes.
A little about Portreath
Portreath is a small coastal village in Cornwall, situated on the north coast near the towns of Truro and Redruth. Portreath sits at a low elevation of around 9 metres, with its housing stock predominantly comprising terraced properties. Portreath is close to several nearby places, including Nance, Paynters Lane End, and Tolvaddon Downs, and is approximately 10.5 miles from the city of Truro. Portreath has a population of around 1218 people, according to recent estimates.
When we get to you around Portreath: what follows
- We find out what was put in, how much, and if your motor has run. The replies shape the work, which is why we ask before pricing.
- Away flows the polluted mixture.
- Our engineers flush the fuel lines and clean the filter, so what's remaining in the fuel system isn't what created the problem.
- Fresh diesel goes in, and then the system gets primed.
- We turn it on and check it runs correctly on clean diesel.
That has it ready to drive away. There's no need for a garage at any point, as the work is all done where the car is, and when it is caught quickly, lasting damage is very uncommon.
AdBlue in your diesel tank instead, around Portreath?
AdBlue instead of petrol? Then the opening rule is unchanged — your motor stays off — while this problem beneath it is a distinct one altogether. Petrol does two things to diesel: weakens it, and removes the protection the system relies on. AdBlue? Urea dissolved in water. Put that in with the diesel and you get rust instead, plus deposits.
Our engineers handle both, and AdBlue removal around Portreath has its own page with the detail — including why it's usually the more significant of the two.
How much is a petrol-in-diesel drain in Portreath?
What shifts the figure is set out below, since this job is not one job and our technicians cannot truthfully put a single number on this page.
- Has it been started or driven? Nothing else counts for as much.
- The tank's capacity, set against how much of the wrong fuel got into it.
- AdBlue or unleaded, whichever was put in.
- Access: the car's position, and if working on it there's sensible for our van.
The car, the amount, whether it has run — give us those and the answer comes back clear and not as a range. For the car at home that is going nowhere and isn't pressing, is fine too.
Questions our technicians get about petrol in diesel around Portreath
Can you do a fuel drain at a petrol station in Portreath?
Yes, and it is where a large part of this work happens. Routinely, provided the site consents: Texaco, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether our technicians can work in that place is something we answer there and then.
How much petrol in a diesel is too much?
Ratio decides it rather than litres — and more than either, whether the motor has run. What settles how much work is required is whether that blend has been pulled through your fuel system — since even though five litres in an almost empty tank is a different case from five in a full one, either way that's the query.
I drove the car after putting petrol in my diesel. What now?
Stop safely. Off. Nothing after that. It is fixable a lot more frequently than motorists expect, even though driving is what moves the trouble from the tank into your pump and injectors — and the single most valuable thing you can do now isn't restart it.
Will a fuel drain void my warranty?
No. Carried out correctly, draining and cleaning is no alteration at all, and the warranty from your manufacturer is untouched by it. Running a diesel on petrol is the thing more likely to cause a dispute with one, which is another reason to leave the car turned off.
Can I just add two-stroke oil and drive home?
Two-stroke oil solves a separate problem, and an old one at that. Nothing it does puts back what petrol thinned. No. The pump still has to live with it, because that tank still has petrol in it later on.
A main dealer for petrol in a diesel — necessary?
There is no need to bring it to a franchised dealer, because we drain and flush the vehicle wherever it is.
Still with your car?
Don't switch the car on again.
If you have already driven the vehicle, pull in somewhere safe, switch it off then keep it off. Cold, stationary, going nowhere: that's the best position to be in. Drivers fear this much more than they need to.
On-site fuel draining in Portreath and across Cornwall — at the roadside, on the forecourt or at home.