Put Petrol in a Diesel Car in West Hoe? Don't Start It
Never turn on the motor. While the fuel is still sitting in that tank and the motor has not been started, a drain is nearly always all it takes — and that gets determined in the following few minutes, not by how much got in. Petrol in Diesel drains and cleans wrongly fuelled vehicles where they stand, across West Hoe and the rest of Devon, on the forecourt, at the roadside or on a driveway. Ring us before anything else starts, and you will know what comes after that.
Petrol in a diesel: what to do next
- Do not crank it. Fired up anyway? Then don't depend on it. Diesel in a petrol motor usually can't run, so the motorist stops and the damage halts with them. Petrol in a diesel? It starts. It idles. It moves off normally, for a few miles. People get that confused. It's not fine — that fuel system is wearing down every mile you cover.
- Flicking your ignition on often primes your system, and priming is what carries petrol out of that tank and into the pump and injectors. Those are the parts diesel keeps oiled on its way through, before it ignites. Petrol manages the burning and none of the oiling. Leave the car's ignition be.
- Never weaken it. Diesel added on top takes out nothing, so all you get is more of what was already there, because percentage isn't how a diesel fuel system copes with petrol. Super unleaded? Still petrol. The octane makes no difference.
- Sit tight if it is wise to. Hazards on, ignition off, keep the car. Wherever you have stopped — the verge on Central Road, anywhere — a difficult place for us is better than a started diesel, and nothing is simpler for us to deal with than a car that never moved.
- Keep your location prepared before you ring. A postcode beginning PL1 3 and whatever is closest to you with a sign on it is the difference between a van arriving and the van circling.
- Phone 0333 366 0103. Say what got in, about how many litres, and also whether your car has run. Those three answers determine the full call-out.
Do not run it home. The journey in has already forced a real load of petrol-thinned diesel through the high-pressure fuel pump of that Volkswagen Golf, and the journey back would more or less double it for no reason at all. Ring us from the platform if that's simpler. We never need you hovering over your car outside Plymouth whilst we get on, and we would far rather hear from you tonight than learn on Monday.
How far, and how hard? The second of those matters more than the first, and so have both ready. Your Nissan Qashqai will have seemed entirely usual on the way back from St Andrew's Cof E VA Primary School — they all do, and that is the trap. Diesel into a petrol motor generally won't run at all: the motorist stops, and so does the damage. Petrol into a diesel fires up, idles, drives off like nothing happened, while the high-pressure fuel pump gets on with its work minus the lubrication the fuel should be giving it. No warning comes, since behind the wheel nothing seems wrong.
Out there fine, back sluggish. If that was the drive to Millbay Park, look at your tank. Diesel gets weakened by petrol, and thin fuel seeps past the fine tolerances supposed to build injection pressure — so every additional mile the diesel Dacia Duster covered, the less pressure it held onto. Somewhere sensible, switch off, call us.
Off the forecourt, receipt read, a few hundred yards, left near Look II. For a diesel Peugeot 3008 whose motor has turned, that is about the best version there is. Call us, then let the car stand with your ignition alone. Short assists, truly — but a start is a start and a drive is a drive, and your filter has had thinned fuel through it, and so has the pump. Which is why your lines get purged and not just that tank drained.
Flushed, not drained — that is what a diesel Mercedes A-Class which got as far as The Fab Four needs. Running a diesel puts that mix into the filter, the fuel lines, the pump and the rail, none of which empties with your tank, and so by now that tank holds the smaller part of the trouble.
Removing petrol from a diesel at the forecourt
Forecourts are where this job often begins, and where a good share of it ends. The drain normally takes place right there. Still on the forecourt at Asda? Given the site's permission, that is a place we work, and routinely.
At a forecourt, the mistake is stopped with the engine never started, and no place else manages it. Our technicians can still sort it out where it stands, even away from the pumps. In a car park, on a drive or in a lay-by, the car has been fired up and moved there, and that sucked fuel through the fuel filter and 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 that tank to the fuel lines and the fuel filter, and the few seconds between checking the till receipt and reaching for the key are what decide that.
Staff will usually help out pushing it out from the pump, which lets the next customer get through. Take the offer. Firing it for four vehicle lengths? Don't.
West Hoe and the towns next to it
West Hoe is a residential suburb, and our team head out to the town and to anywhere near it on the usual trips: Millbay, Stonehouse, Plymouth, Barbican and Mount Batten.
If yours isn't on the list that does not mean we do not come — there are pages for nearly all towns across Devon, and the ones mentioned above are just the closest neighbours. Phone and enquire rather than guessing, especially if you are on the border or somewhere the satnav can't find.
The ground the page covers sits on our map. The car never needs to come to us. Our technicians work across all of that — kerbside, forecourts, driveways, car parks.
Stopped at the kerbside somewhere around West Hoe?
Some people find no suitable spot to pull over whatsoever. A normal call for us and not an unusual one: worked out after setting off, landed along the verge of Garden Crescent or at a lay-by with the hazard lights going.
Sit with the car while it's wise to wait in it, yet out of the car if it is not. Every mile a diesel obliges you for on petrol draws the mix further into your fuel system — and oblige it often will, which is why the engine doesn't get restarted to limp somewhere safer. However inconvenient the location, it is no problem for us to come to it, and that's much better for the vehicle than carrying on.
Already run it? Petrol in a diesel after some miles
under 50 miles from West Hoe, the local M5 is what matters now. It will often get you onto it, and some way along, before you notice a thing. Then it is some smoke, an uneven idle and power draining away — not a clean stop. Misfuelled diesels seldom give you one of those.
Take the first junction that is sensible, pull up there, and never restart the vehicle to move it. Suppose the worst of it on a long trip. Anything approaching the under a mile to the nearest city, and the contamination has been through the fuel filter, through your pump, through the injectors. Say so when you ring. What our engineers bring differs.
Where's West Hoe?
West Hoe is a coastal suburban area in Devon, situated near the city of Plymouth and adjacent to Millbay and Stonehouse. West Hoe sits at a low elevation of around 8 metres, with its predominant housing stock consisting of flats. West Hoe is close to the amenities and services of Plymouth, being only half a mile from the city centre.
What we do when our technicians reach you around West Hoe
- We find out what went in, how much, and whether the engine has run. The answers change the work, which is why our technicians ask before giving a price.
- Out goes the contaminated fuel.
- Lines cleaned, filter cleaned. Whatever is left after that isn't the thing that started the problem.
- We put new diesel in and prime your system.
- It is started with clean diesel in it, and our technicians check that it is running properly.
The vehicle is then ready for you to drive away. There's no need to go to a garage at any stage, because the work is all done where the car is, and when it is caught soon, permanent damage is very uncommon.
A separate job: AdBlue in a diesel tank in West Hoe
AdBlue rather than petrol? Then the opening rule is unchanged — the motor remains off — whereas this problem underneath it's a distinct one altogether. Petrol dilutes your diesel and takes away the lubrication the system depends on. Urea dissolved in water, AdBlue, and in a diesel tank that brings corrosion and build-up.
Usually the more significant of the two, AdBlue — and the detail sits on its own West Hoe page. Both are ours to handle.
Budgeting for a petrol-in-diesel fuel drain around West Hoe
What changes the figure is set out below, because this job is not one job and our engineers can't truthfully put a single figure on this page.
- This is the big one: whether your engine has been started, or driven.
- How much of the wrong fuel got in, compared with how much that tank holds.
- AdBlue or unleaded, whichever got in.
- Whether a technician can safely reach the car and work on it, which depends on where your car is.
The vehicle, the amount, whether it has run — give us those and the answer comes back straight instead of as a range. For your car at home that's going nowhere and is not urgent, works too.
Things our engineers get about petrol in diesel around West Hoe
At a petrol station in West Hoe, can you do a fuel drain there?
Yes — forecourts are where a large portion of this gets done. Often, provided the site consents: another forecourt nearby, plus every other forecourt nearby. Say on the phone where exactly you have stopped. Whether we can work in that location is something our engineers answer straight away.
How much petrol in a diesel is too much?
It rests on the proportion instead of the litres, and far more on whether the engine has run. Five litres into an almost dry tank is not five into a full one, no. But both land on the same question in the end: has that mixture been sucked right through, or has it not?
Already driven it with petrol in the diesel? Now what?
Stop sensibly. Off. Nothing after that. Not restarting it is the single most useful thing available to you now. Driving does move the problem out of your tank then into your pump and injectors, yes, and it stays fixable much more often than people fear.
Is a fuel drain going to void my warranty?
It's not a modification, and so a drain then flush carried out correctly does not cancel a manufacturer's warranty. Another good reason to leave it switched off: running a diesel on petrol is the thing likelier to cause an argument with one.
Two-stroke oil in the tank, and then home?
Two-stroke oil solves a distinct fault, and an old one at that. Nothing it does puts back what petrol diluted. No. Afterwards? Still petrol in your tank, and a pump that has to put up with the stuff.
Main dealers and petrol in a diesel
Wherever the car is, we drain and flush it there, so a trip to the main dealer doesn't come into it.
Still with your car?
Switched off is the way it remains.
Switch it off somewhere sensible then keep it off, if you have already driven it. Cold and stationary, a vehicle is in the best position available — and motorists fear this much more than the recovery rate warrants.
At the roadside, on the forecourt or at home — call-out fuel draining in West Hoe and throughout Devon.