--- title: Compton Martin: Petrol in a Diesel Car? Next Steps canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/compton-martin-somerset/ location: Compton Martin county: Somerset latitude: 51.312470 longitude: -2.656140 service: Petrol in a Diesel Car updated: 2026-10-19 --- # The Next Steps, in Order: Petrol in a Diesel Car in Compton Martin Not for a moment, and not for moving it: your engine remains off. Pause there. The next few minutes settle it more than anything else: petrol in a diesel that has not run usually comes down to draining then flushing, on the spot. Below is the order from this point, anywhere in Compton Martin you happen to be. ## Petrol in a diesel, motor off — the first minute Before anything else, these — in this order. - Ignition off, keys out. Switched on, your ignition can prime the system — and priming is what moves petrol out of your tank towards the parts it damages. - No diesel on top. More fuel in removes none of the petrol — it just leaves you with more of the same mixture. - Hazards on. If you're anywhere close to moving traffic, make the car simple to see before you do anything else. - However short the distance, starting it to shift it is the thing to avoid. On a forecourt, push the car away from the petrol pump by hand instead, then ask the attendants to lend a hand. - Hold on to the receipt. It says which fuel got in plus roughly how much, which is the first thing we will ask. Still on the move when you realised? Come off the M5 at the next junction if that's where you are, under 10 miles from Compton Martin, and stop somewhere sensible and not pressing on to the services. Then start at step one. ## The fork in each Compton Martin fuel drain: has it run yet? From this point on, everything comes down to a single answer. Motor not run at all? - Only the tank has petrol in it for now. - The work is a simple drain and a flush, usually done where the car stands. - This is the best case — which is the whole point of step one. Engine run, however briefly? - Petrol has been pulled from the tank, through the filter and into the fuel lines. - Run it further and that petrol reaches the fuel injectors, having passed through the pump first. - Flushing your lines, the filter seen to, occasionally more: the job grows as the mileage does. Petrol doesn't lubricate. Diesel does, oiling the high-pressure pump and injectors as it flows through, which is why the line sits where it does. Nothing is damaged by petrol that's only waiting in a tank. Pump that petrol, though, and it grinds down the very parts doing the moving. ## What to have prepared when you call about petrol in a diesel from Compton Martin A little preparation is the difference between a van that finds you and a technician that goes round. - The best start is a postcode — one starting BS40 6 — for where you have stopped. - Name the road — Undertown or wherever you have pulled up — or the car park. - What a car park serves is the quickest way to find it, and so mention the landmark — like the one at The Co-operative Food. - Say what your car is — make, model — and confirm it's diesel. - Petrol or AdBlue? Tell us which. They are separate jobs, and AdBlue has its own Compton Martin page. - How much. Litres from your receipt, or how long the nozzle was in. - If it's run, how far plus how heavily — and whether it's run at all. - Whose motor it is. Some hire or company agreements want the owner to approve the work, and that's quicker settled before our technicians get there than after. Phone 0333 366 0103 once you've got that ready — or, if the vehicle is at home, going nowhere, use . ## Compton Martin fuel drain on its way? While you wait Stick to these: well-intended help causes the damage during the wait. - Your safety comes before the vehicle. Somewhere exposed? Get away from the traffic then wait away from it. Safe where it is? Wait with it. - A kind passer-by doesn't start it. Nor does anybody checking it still works, or rolling it a couple of yards. - Additives stay in the boot. Injector cleaner and two-stroke oil draw none of the petrol out again. - Clearing it yourself is not the answer: a can of siphoned petrol on a verge is a danger, and your fuel beyond your tank remains put all the same. - Even your radio or your windows are not worth turning your ignition on for. ## The fuel drain, step by step, once our van gets there - The price comes after three questions, not before them — what got in, how much, and if it's run — since those replies set the job. - Out of that tank comes the polluted mix: the tank is emptied. - Petrol that has shifted beyond your tank sits in your lines if it ran, and the lines are rinsed to shift it. - The filter is sorted. Cleared, or swapped where your car has a usable one. - Your system is primed on clean diesel. - Starting up. When your system is primed with new diesel, we fire it up and make sure it runs correctly. Only when it's running on clean diesel do our technicians leave. It's very rare for a vehicle noticed early to be left with lasting damage, and normal driving resumes right away. ## Compton Martin, after the fuel drain: back on the road - Drive normally. There is nothing special to do once it has been started on clean fuel. - Watch the first miles. A warning light, smoke, a rough idle or a flat spot under your throttle means pull over and call us back. - The paperwork covers the query a rental company, fleet manager or insurer may ask: what work was carried out. File it. - Next time, check the petrol pump. The label, not the colour of its handle. ## About Compton Martin, briefly Compton Martin is a village in Somerset, situated on the banks of the River Yeo at an elevation of around 89 metres. Compton Martin lies near the Mendip Hills, close to the cities of Wells and Bristol, and is surrounded by other small villages such as West Harptree and The Wrangle. Compton Martin has a population of approximately 554 people, predominantly living in detached houses. Compton Martin is located about 109.8 miles west of London, making it a rural community in the South West of England. ## Fuel drains around Compton Martin and beyond The Wrangle, Ridge and West Harptree are served by the same vans that take petrol in diesel calls in Compton Martin — and so is most of Somerset beyond. Guessing does not help close to a boundary or somewhere hard to describe; a quick ring and a query will. ## Petrol in a diesel around Somerset? Leave it off and ring Keys out, motor off, the receipt in your pocket: that is stage one done. The remainder is for Petrol in Diesel, wherever the vehicle is — forecourt, kerbside or driveway.