Feltham: Petrol in a Diesel Car? Here Is What Happens
Whatever you do, never switch the engine on, even for a moment, to move the car. Pause; leave it off. Petrol in a diesel that has not been run is typically a drain and a flush, done where your vehicle stands, and what happens in the coming few minutes determines that far more than anything else. From here on, in order, for anywhere around Feltham:
Engine off: minute one with petrol in a diesel
Go through the following in sequence, before you do anything else.
- Bleeding the system draws petrol from the tank towards the parts it damages, and turning the ignition on can be enough to do that. So the keys get taken out, and the ignition stays off completely.
- Do not top it up with diesel. Adding diesel takes out nothing. You end up with a bigger tank of the same mix.
- Make the car simple to see before anything else — hazard lights on — if there's moving traffic anywhere near you.
- However short the way, starting it to move it is the mistake. At a forecourt, push the car clear of the petrol pump by hand instead, and ask the staff to lend a hand.
- Which fuel, and about how much? Your receipt answers both, and that's where our questions start. Do not throw it away.
If you were still on the move when you noticed, stop somewhere sensible rather than pushing on for the services — on the M3, under 3 miles from Feltham, that means the next junction. Step one comes next.
Each Feltham fuel drain starts here: has the motor run?
Everything after this point depends on one answer.
If the engine hasn't run at all:
- The petrol sits in that tank, and only there.
- Normally it's emptied and purged right where your car is.
- Step one counts for precisely this reason: it's the best position to be in.
If it's been started, even for a moment:
- Petrol has been drawn from that tank, past the filter then into the lines.
- The high-pressure pump as well as the injectors see it too on a bigger run.
- The farther it went, the larger this job — the fuel lines, your filter, and sometimes more besides.
The line falls there because diesel protects the high-pressure pump and the fuel injectors on its way through them — and petrol doesn't. Petrol sitting in a tank harms nothing. As soon as it is pumped, petrol begins grinding whatever moves it.
Feltham, petrol in a diesel: have these ready before you call
Prepare a little, and the van finds you rather than circling.
- Where you are. A postcode beginning TW13 4 is the best place to start.
- Name the street — Bedfont Lane or wherever you have pulled up — or the car park.
- What a car park serves is the easiest way to find it, so say the landmark — like the one at Lidl.
- That it's a diesel, plus the make and model of your vehicle.
- Say which was put in — petrol or AdBlue — since AdBlue is a separate job, with a page of its own for Feltham.
- How much. Litres from the receipt, or how long the nozzle was in the filler.
- The miles it did, and how hard, if it ran at all.
- Settle who owns your car before our engineers arrive: some hire or company agreements want the owner to authorise this work, and that is faster first.
Next, 0333 366 0103. Not urgent, the vehicle left at home with nowhere to be? Then will do as well.
Feltham fuel drain on its way? Whilst you wait
Hold to these: well-meant help causes the damage during the wait.
- Where your car has stopped settles where you wait. Exposed: away from it, away from the traffic. Safe: with it. Either way, safety before the car.
- No one starts it. Not a passer-by being helpful, not to check it is all right, not to roll the car a few yards.
- Anything from the boot, oil meant for two-strokes or injector cleaner: no additive removes that petrol.
- No DIY draining. Siphoning petrol into a can by the roadside is dangerous, and it leaves the fuel that has by now gone beyond that tank.
- Ignition remains off. Even for the radio or the windows.
When the van arrives: the fuel drain, step by step
- Fuel, volume, whether it has run: the answers decide the job, and that's why we give a quote after them rather than before.
- That tank is drained. The contaminated mix comes from that tank.
- Flushing your lines follows, since a car that ran has petrol past the tank, inside the lines themselves.
- Then the filter: changed where there is a usable one, cleared where there's not.
- The system is primed with clean diesel.
- Our technicians start the engine only after fresh diesel has gone in and bled your system, then check that it's running smoothly.
Until it runs on fresh diesel, our engineers remain with it. Permanent damage is very unusual if it has been spotted early, so the car can go right back to normal driving.
Once the fuel drain is done: driving in Feltham a second time
- Nothing special is needed after a start with fresh diesel — ordinary driving will do.
- The first miles are the test. A warning lamp, exhaust smoke, a rough idle or a flat throttle is your cue to stop then ring us again.
- The work may come up later with a hire firm, an insurer or a fleet manager. Keep your paperwork.
- Next time, trust the petrol pump's label rather than the colour of its handle.
About Feltham itself
Feltham is a locality in the London Borough of Hounslow, situated on the River Crane in southwest London. Feltham lies approximately 12.8 miles from central London, with nearby areas including North Feltham, Lower Feltham, and Hanworth. Feltham has a population of around 7957 people, predominantly residing in flats. Feltham's riverside setting and relatively low elevation of 24 metres contribute to its geographical character.
Feltham and nearby: fuel drains across the area
Most of Greater London has the same teams as Feltham for petrol in diesel jobs, North Feltham, Lower Feltham and Hanworth included. Guessing does not help close to a boundary or somewhere hard to explain; a quick ring and a query does.
Ring, and leave the car off — petrol in a diesel across Greater London
Petrol in Diesel carries on from there — on your driveway, at the roadside, on the forecourt — once you have done stage one: keys out, engine off, receipt in your pocket.