Skip to content

Petrol in Diesel

0333 366 0103

Petrol in a Diesel Car in Cobb: What Happens Now

Stop, and leave your motor off — not on, and not for a second to move the car. Cleared and purged, right where it sits: that's normally all an unrun diesel with petrol in it needs. Whether it remains that simple depends on the minutes to come far more than on everything else. Below is the sequence from here, anywhere in Cobb you happen to be.

Call 0333 366 0103

Minute one: petrol in a diesel, motor off

Go through these in order, before you do anything else.

  • Take the keys out. Even your ignition by itself can prime the fuel system, pulling petrol out of the tank to precisely the components it harms, so keep the vehicle alone completely.
  • Topping up with diesel sounds like it thins the trouble. It does not: nothing comes out, and that tank simply holds more of the same.
  • Make the vehicle simple to see first — hazard lights on — if there's moving traffic anywhere near you.
  • By hand, never under your engine: that is how it comes off the pump. Get the forecourt staff to help you roll, however short the distance.
  • Keep the receipt: the grade and the rough amount are printed on it, and they're what our technicians ask about first.

Noticed on the move? Get off at the next junction if you are on the M5, under 25 miles from Cobb, and stop somewhere safe — not at the services farther on. Step one starts after that.

The fork in every Cobb fuel drain: has it run yet?

What happens after this rests on one answer, and only one.

Motor never run at all?

  • That petrol is still inside that tank and nowhere else.
  • A drain and flush, on the spot, is usually all of that.
  • No place is better, and it's why the first stage matters so much.

Engine run, however briefly?

  • Some petrol has left that tank by now, gone through the fuel filter, and reached the lines.
  • On a longer run it has got to the high-pressure fuel pump as well as the injectors.
  • The job expands with the miles — lines cleaned, filter seen to, sometimes more.

The line falls there because diesel lubricates the high-pressure pump and your injectors on its way through them — and petrol doesn't. Nothing is damaged by petrol that's only resting in a tank. Once it's pumped, petrol starts wearing down whatever moves it.

Fuel drain of a diesel car in Cobb, step by step

Cobb, petrol in a diesel: have these ready before you call

A van that circles against a van that finds you: a little preparation is what separates them.

  • The best place to start is a postcode — one beginning DT7 3 — for where you are.
  • The street or the car park. A road name helps — Cobb Road, or wherever you have stopped.
  • What a car park serves is the easiest way to find it, so mention the landmark — such as the one outside Charmouth Stores.
  • Make and model of your vehicle, and the fact it is a diesel.
  • Tell us which was put in — petrol or AdBlue — since AdBlue is a different job, with a page of its own for Cobb.
  • How much. Litres from your receipt, or how long the nozzle was in.
  • The mileage it covered, and how hard, if it has run at all.
  • The owner may have to authorise the work under some hire or company contracts — so it is faster to settle whose car it is before our engineers arrive.

Then phone 0333 366 0103. If it can wait — the vehicle is at home with going nowhere — does the trick as well.

Waiting for a fuel drain around Cobb: what to do

The wait is where kindly meant help does the damage. Hold to these.

  • Stay with your car if it is safe where it is — but if it has stopped somewhere dangerous, you come first: away from the traffic, waiting apart from it.
  • No one starts it. Not a passer-by being helpful, not to check it is all right, not to roll the car a couple of yards.
  • Something from your boot, oil meant for two-strokes or injector cleaner: no additive lifts that petrol.
  • A DIY drain leaves the fuel that has already gone beyond your tank, and siphoning petrol by the road is hazardous too.
  • Ignition remains off. Even for the radio or the windows.

Van arrived? Your fuel drain, one stage at a time

  • Three queries. What got in, how much, and if it's run. The answers set this job, which is why the quote comes after them but not before.
  • Draining it is how the blend gets taken from the tank.
  • Petrol that has shifted beyond the tank sits in your lines if it ran, and your lines are rinsed to shift it.
  • Then the fuel filter: swapped where there's a usable one, cleared where there's not.
  • Your system is primed with clean diesel.
  • We start it only after fresh diesel has gone in and primed the fuel system, then make sure that it is running correctly.

Only when it is running on fresh diesel do we head off. The vehicle returns to normal driving right away, and permanent damage is very uncommon when it has been spotted quickly.

Back on the road in Cobb after your fuel drain

  • After it has been started on clean fuel, there's nothing unusual to do: drive normally.
  • Pull over and call us back if anything looks wrong early on — a light on your dash, smoke from the exhaust, an idle that runs rough, or a throttle with a dead spot.
  • Hold on to the paperwork. A hire firm, a fleet manager or an insurer may ask what was carried out.
  • The handle's colour isn't the guide to go by next time — the label on the pump is.

About Cobb, briefly

Cobb is a small coastal suburban area in Dorset, situated near the towns of Lyme Regis and Ware. Cobb lies close to the sea, at a low elevation of around 6 metres, and is characterized by its predominantly detached housing stock. Cobb is part of a larger residential area that has developed along the South West coast of England, with nearby landmarks including Dragons Hill.

Fuel drains in Cobb and the spots nearby

Lyme Regis, Ware and Dragons Hill are served by the same teams that take petrol in diesel call-outs around Cobb — and so is most of Dorset beyond. Ring and ask rather than assuming if you are somewhere hard to explain or near a boundary.

Petrol in a diesel around Dorset? Leave it off then ring

Petrol in Diesel carries on from there — on your drive, at the kerbside, at the forecourt — once you have done stage one: keys out, engine off, receipt in your pocket.

Call 0333 366 0103