--- title: Knotty Corner: Petrol in a Diesel Car? Next Steps canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/knotty-corner-devon/ location: Knotty Corner county: Devon latitude: 51.006990 longitude: -4.260580 service: Petrol in a Diesel Car updated: 2026-10-16 --- # Petrol in a Diesel Car in Knotty Corner: What Happens Now Not for a moment, and not for moving it: your motor remains off. Pause there. Petrol in a diesel that has not been run is generally a drain plus a flush, done right where the vehicle stands, and what you do in the coming few minutes settles that more than anything else. From here on, step by step, wherever you are in Knotty Corner: ## Petrol in a diesel, engine off — the first minute In this order, all before anything else: - Priming the fuel system pulls petrol from your tank towards the parts it damages, and turning your ignition on can be enough to do that. So your keys get taken out, and your ignition stays off completely. - No diesel on top. More fuel in removes none of that petrol — it just makes you with extra of the same mixture. - Near passing traffic? Then the hazard lights come on before everything else, so the car is simple to see. - However short the distance, starting it to move it is the thing to avoid. On a forecourt, push the car away from the petrol pump by hand instead, then ask the staff to lend a hand. - Which fuel, and about how much? The receipt replies both, and that's where our first question starts. Don't throw it away. Still driving when you realised? Come off the M5 at the next exit if that is where you are, under 50 miles from Knotty Corner, and stop somewhere sensible and not pushing on to the services. Then begin at stage one. ## Each Knotty Corner fuel drain starts here: has the engine run? What comes after this turns on one answer, and only one. Engine never run at all? - Nowhere but that tank: that's where the petrol yet is. - A drain and flush, on the spot, is usually the whole job. - This is the best position to be in, and the reason stage one matters. Motor run, even briefly? - Some petrol has left that tank already, passed through the filter, and got into your lines. - A bigger run takes it all the way to your high-pressure pump and the fuel injectors. - The further it went, the larger the job — the fuel lines, your filter, and now and then more besides. The reason the line falls there: diesel lubricates the high-pressure fuel pump and the injectors as it passes through them, and petrol does not. Nothing is damaged by petrol that is just sitting in a tank. Petrol being pumped is wearing the parts that move the car. ## Knotty Corner, petrol in a diesel: have these prepared before you call Prepare a little, and the van finds you rather than circling. - The best start is a postcode — one starting EX39 5 — for where you have stopped. - Give the road — Atlantic Highway or wherever you have stopped — or the car park. - What a car park serves is the easiest way to find it, so mention the landmark — such as the one at Aldi. - Make and model of the vehicle, and the fact it is a diesel. - Say which got in — petrol or AdBlue — because AdBlue is a separate job, with a page of its own for Knotty Corner. - How much. Litres from your receipt, or how long the nozzle was in. - Has it run? If so, tell us how far it got, and the way it was driven. - Whose vehicle it is. Some hire or company agreements want the owner to authorise the work, and that is quicker settled before our engineers arrive than after. Next, 0333 366 0103. Not urgent, your car parked at home with nowhere to be? Then works as well. ## Knotty Corner fuel drain on its way? Whilst you wait Help, however well meant, is what does the harm whilst you wait. So stick to these. - Safety before the vehicle. If it has stopped somewhere exposed, get yourself clear of the traffic and wait away from it. If it is safe where it is, wait with it. - Not to roll it a few yards, not to check it is all right, not as a passer-by's favour: nobody starts it. - Something from the boot, oil made for two-strokes or injector cleaner: no additive removes that petrol. - No DIY draining. Siphoning petrol into a can at the kerbside is risky, and it leaves your fuel that has by now gone beyond the tank. - The ignition remains off. Even for the radio or the windows. ## Van arrived? Your fuel drain, one step at a time - Three questions. What was put in, how much, and whether it's run. Those answers shape this job, which is why the price comes after them and not before. - Then your tank is drained, and the polluted fuel comes out. - If it ran, the lines are holding petrol that has shifted beyond that tank — so they're rinsed. - Where the vehicle has a serviceable filter, it is replaced; otherwise, cleared. - Clean diesel goes in, and the fuel system is primed. - Our engineers fire it up only after clean diesel has gone in and bled your system, then confirm that it is running correctly. The car has fresh diesel running through it before our technicians go. Lasting damage is very uncommon when it has been caught quickly, so the car can go straight back to normal use. ## After your fuel drain: back on the road in Knotty Corner - Drive normally. There's nothing special to do after it's been started on clean fuel. - The first miles are the test. A dash warning, exhaust smoke, a rough idle or a hesitant throttle is your signal to stop then call us again. - An insurer, a fleet manager or a hire firm may ask what was carried out, so keep your documents. - Read the label on the pump next time, not the colour of its handle. ## About Knotty Corner itself Knotty Corner is a small locality in Devon, situated near the coast and approximately 101 metres above sea level. Knotty Corner lies within a short distance of several nearby places, including Ford, Abbotsham, and Fairy Cross. Knotty Corner is characterised by its predominantly detached housing stock, reflecting its relatively rural setting. Knotty Corner is located around 37 miles from Exeter, the nearest city. ## Fuel drains around Knotty Corner and the spots nearby The same vans that answer petrol in diesel jobs around Knotty Corner cover Ford, Abbotsham and Fairy Cross, and most of Devon beyond them. Guessing does not help close to a boundary or somewhere hard to describe; a quick ring and a question does. ## Ring, and leave the car off — petrol in a diesel around Devon Petrol in Diesel carries on from there — on your drive, at the roadside, at the forecourt — once you've done stage one: keys out, engine off, receipt in your pocket.