What Happens Now: Petrol in a Diesel Car in The Knap
Whatever you do, never switch the motor on, even briefly, to move the car. Pause; leave the car off. Cleared then cleaned, just where it sits: that is usually all an unrun diesel with petrol in it needs. Whether it stays that straightforward depends on the minutes ahead far more than on everything else. Here's the sequence of things from here, anywhere you are around The Knap.
Petrol in a diesel, motor off — the first minute
First, the following — in this sequence.
- Bleeding the system draws petrol from your tank toward the components it harms, and switching your ignition on can be all it takes to do that. So your keys get taken out, and your ignition remains off completely.
- Topping up with diesel sounds like it dilutes the problem. It doesn't: nothing gets out, and that tank just carries more of the same.
- Near passing traffic? Then your hazards come on before anything else, so the car is simple to spot.
- By hand, not under the engine: that is how it leaves the petrol pump. Ask the forecourt staff to help you push, whatever the distance.
- The first thing you will be asked is which fuel went in and roughly how much — and your receipt says both. Keep it.
Still on the move when you noticed? Come off the M4 at the next exit if that is where you are, under 10 miles from The Knap, and pull over somewhere safe instead of pressing on to the services. Then begin at stage one.
The Knap fuel drain: has your engine run yet, or not?
One answer is what everything after this point rests on.
If the motor has not run at all:
- Just your tank has petrol in it for now.
- The work is a drain and a flush, normally done where the vehicle stands.
- Step one counts for precisely this reason: it's the best position to be in.
If the engine has been run, even for a moment:
- Your lines and the filter now hold petrol drawn from the tank.
- Run it farther and that petrol reaches your injectors, having passed through the fuel pump first.
- The farther it went, the bigger the job — the lines, the fuel filter, and now and then more besides.
The reason the line falls there: diesel protects the high-pressure fuel pump as well as your injectors as it flows through them, and petrol doesn't. In that tank, left alone, petrol does no harm. The components that shift it are wearing the moment petrol is being pumped.
The Knap, petrol in a diesel: have these prepared before you call
Whether the van goes round or finds you comes down to a little planning.
- Where you have stopped. A postcode starting CF62 6 is the ideal place to start.
- A road name helps: Lakeside, say, or whatever street you've stopped in. A car park works too.
- Or the landmark. A car park is easier to find by what it serves, such as the one outside Asda.
- The make and model of the car, and the fact it is a diesel.
- Tell us which got in — petrol or AdBlue — because AdBlue is a separate job, with a page of its own for The Knap.
- How long the nozzle was in, or the litres on your receipt — whichever tells us how much.
- Has it run? If so, tell us how far it went, and how it was driven.
- Whose motor it is. Some hire or company contracts want the owner to authorise the work, and that is easier settled before our engineers arrive than after.
Then ring 0333 366 0103. If it can wait — your car is at home and going nowhere — does the trick as well.
The Knap fuel drain on its way? While you wait
The wait is where kindly meant help does the harm. Hold to these.
- Your safety comes before the car. Somewhere dangerous? Get clear of the traffic and wait away from it. Safe where it stands? Stay with it.
- No one starts it. Not a passer-by being helpful, not to check it is all right, not to roll it a couple of yards.
- None of that gets the petrol back out — not two-stroke oil, not injector cleaner, not anything from your boot. So no additives.
- Siphoning petrol into a can at the roadside is hazardous — and it also leaves whatever fuel has already gone beyond your tank. Don't try a home-made drain.
- Not for your radio, not for your windows: your ignition remains off.
Van arrived? Your fuel drain, one step at a time
- First, three queries: which fuel got in, the quantity, and has it run? Those answers set this job, and so our quote follows them.
- Your tank is emptied. The tainted blend comes from the tank.
- Petrol that has shifted beyond your tank travels in the lines once it ran, and your lines are flushed to shift it.
- The fuel filter is sorted. Cleared, or changed where the car has a workable one.
- Clean diesel in, and your system primed.
- The start. With clean diesel in and the system primed, it is started and tested to be sure it runs properly.
We wait until it is running on fresh diesel. Lasting damage is very rare when it has been caught quickly, so your car can go straight back to normal use.
After the fuel drain: back on the road in The Knap
- Started on fresh diesel, it needs nothing unusual of you. Just drive normally.
- Pull over and ring us back if anything seems wrong early on — a light on the dash, smoke from your exhaust, an idle that is lumpy, or a throttle with a dead spot.
- Hold on to the paperwork. A hire company, a fleet manager or an insurer may ask what was carried out.
- Next time, check the petrol pump. The label, not the colour of the handle.
About The Knap, briefly
The Knap is a coastal suburban area in the Vale of Glamorgan, situated near Barry Island and Porthkerry. The Knap lies at a low elevation of around 10 metres, close to the sea and approximately 7.9 miles from Cardiff. The Knap has a mix of housing types, but semi-detached homes are particularly prevalent in the area. The Knap is part of the wider Barry urban area, with nearby amenities and attractions.
The Knap and nearby: fuel drains across the area
Barry Island, Barry and Porthkerry are covered by the same teams that take petrol in diesel calls in The Knap — and so is most of The Vale of Glamorgan beyond. Somewhere tricky to explain, or close to a border? Asking beats assuming — ring.
Leave it off and ring: petrol in a diesel in The Vale of Glamorgan
Keys out, motor off, the receipt in your pocket: that is stage one done. The rest is for Petrol in Diesel, wherever your car is — forecourt, roadside or driveway.