Should You Worry? Petrol in a Diesel Car in Chicksands
Far less than you likely are, if it has not been started. Petrol sitting in a diesel tank does nothing to your motor till something pulls it through your fuel system — your ignition priming your pump, the starter, or driving itself. So the truthful answer to the first question everyone in Chicksands asks, "have I wrecked it?", is normally no. Leave the motor off and phone Petrol in Diesel — that keeps it that way. Keep reading for three things: the effect petrol has inside a diesel motor, the clues of how far it has got, and the way to make sure you never do it again.
Your engine and petrol in a diesel: what goes on
On its way through an engine, diesel does two tasks. Lubricating comes before burning; it does both. The high-pressure fuel pump and your injectors are made to very fine gaps, and the diesel passing through them is what stops those surfaces from wearing against each other.
Petrol does the first task badly and the second not at all. The clattering comes from petrol being made not to ignite when compressed, which is exactly the reverse of what a diesel needs. On top of that it is thinner than diesel, it strips away the protection the fuel system depends on, and any pump running on that mixture is wearing itself.
The shape of the trouble is plain when you put those together. Contact doesn't do the damage — movement does. All a tank with petrol in it amounts to is a fuel problem. After your pump has been working on that petrol, a mechanical problem has started: whatever is shed by a pump that is wearing down is carried downstream to your injectors with the fuel.
Four scenarios our technicians see around Chicksands: how serious is petrol in a diesel?
Filled up, and never started: nothing beats it. Being on a forecourt is what makes this the case: elsewhere, the vehicle has been driven there to begin with. With the petrol kept inside that tank alone, it is cleared and cleaned on the spot, and nothing more is needed.
Ignition on, or started for a moment. Petrol has come out of your tank and reached the fuel filter and the fuel lines, since your system has been bled. Drain, flush, deal with the filter: still usually straightforward.
The pump has spent a couple of miles on weakened fuel — that's what driving the car does. The work is that tank, the fuel lines, the filter and fresh fuel through the whole circuit, and how hard the vehicle was driven matters as much as how far. Short trips, like the school run to Campton Academy, are one thing. Very different a second time: a run to Milton Keynes, under 25 miles away, or any mileage on the A1(M), under 10 miles from Chicksands, where your engine never stopped running hard.
Clattering, a lumpy idle, smoke, a throttle gone soft: driven till it complained. The motor is telling you your fuel is no longer behaving like diesel. Pull up wherever you are — the verge on J F Kennedy Drive, a lay-by, a side street — then leave the vehicle there. Lasting damage is very unusual when a vehicle is stopped early, and the drain and flush-through that still come first deal with it.
Chicksands motorists and that petrol in a diesel stories they hear
False: topping up to full with diesel makes it fine. It doesn't. Topping up takes out nothing; it gives you a bigger tank of the same mixture. Percentage is not how a diesel fuel system copes with petrol, however much that advice presumes.
If anything, the reverse is true. Myth: "A modern diesel can cope with a bit of petrol." Smaller parts and higher pressure are the way a modern diesel runs its fuel, and that makes the lubrication matter more, not less.
Myth: "If it starts and drives, there's no damage done." This is the one that catches drivers. Diesel in a petrol motor generally leaves a motor that will not run: the motorist stops, and so does the harm. Whilst the pump grinds, a diesel fed petrol normally starts, ticks over and drives away as though nothing has happened. Being able to run isn't proof of being fine.
Myth: "Add some two-stroke oil and drive the car home." It's an outdated fix for a separate fault. What petrol has diluted stays weakened, and the petrol remains in the tank anyway.
Myth: "Drain that tank yourself and you're sorted." After the motor has run, some of the petrol is no longer inside that tank: it is in your filter and the lines, and it goes straight back through your pump at your next start. Draining petrol into a can by the roadside is also genuinely dangerous.
Petrol in a diesel: how does it take place?
A careless moment is seldom the cause, and nobody means to do it. The petrol nozzle is the slimmer of the two and slides into a diesel filler with almost no resistance; a diesel nozzle mostly won't go into a petrol vehicle at all. The forecourt makes it simple, and the error runs one way.
The moment routine stops matching the vehicle is the moment it happens. Courtesy car, hire car, or a vehicle that is brand new. Households running one of each, petrol and diesel. A forecourt you know, but with its pumps laid out differently. A train to catch, and a hurried fill en route to Arlesey. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is exactly the moment it occurs. Add rain, a phone call or a back seat full of kids, and your hand repeats what it has always done.
Chicksands people: how to avoid petrol in a diesel next time
- The label is what counts, and so read the pump instead of the colour: in the UK unleaded handles are normally green and diesel black, yet not on every forecourt.
- In a vehicle you do not know, look inside the flap over your filler or at the cap before your first fill: plenty of cars state the fuel there.
- A coloured fob or a sticker on the diesel's key does more than any amount of intending to remember, for a house with one of each.
- Say it before you lift it. On the first fill in a new or hired car, say "diesel" aloud before you take the nozzle off the pump. It sounds silly and it does the trick.
- Thinking about something else is when this becomes an easy mistake to make, so put the phone away then keep your mind on the petrol pump.
- Some diesels come with a filler built to refuse a petrol nozzle, and devices you can add exist for motors without one. Such an inhibitor helps up to a point — as a backstop, not a reason to stop checking the pump.
- Noticing it mid-fill? Stop there and then. A weaker mix follows from less petrol in your tank, yet your next stage stays the same: do not start the vehicle.
Chicksands: already put petrol in a diesel?
The order of things is short, then. Starting it is out, and so is turning on your ignition. If you are still at the forecourt — JET or anywhere else — ask the attendants to help you push the car away from the petrol pump. What got in, roughly how much, and whether it has run: tell us that when you call 0333 366 0103.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost lubrication, make it a separate problem — Chicksands has a page all for it.
Why one petrol in a diesel job around Chicksands costs more than another
Four different tasks lie behind the four scenarios above — which is why there's no fair single quote. Which of them you're in is chiefly what shifts the cost. Where the car is matters too, and whether our van can safely get to it, after the ratio of petrol to what your tank holds.
Ahead of any quote, not after, we ask three questions: the fuel that got in, the quantity, and if it's run. That is why. A range turns into a straight figure when those answers are in.
About Chicksands, for a moment
Chicksands is a village in Bedfordshire, situated on the banks of the River Ivel at an elevation of around 45 metres. Chicksands lies near the villages of Campton and Shefford, and is within commuting distance of Milton Keynes. Chicksands has a mix of housing types, with terraced houses being particularly prevalent. Chicksands is located approximately 37.9 miles from London, making it a potential base for those working in the capital.
Fuel drain cover in Chicksands and across Bedfordshire
Petrol in diesel calls around Chicksands — part of the SG postcode area — go to teams that likewise cover the locations round it, Campton, Shefford and Beadlow included. The vehicle does not need to move to us: we drain on a forecourt, in a supermarket car park, in a lay-by or on your own driveway.
Still at the pump around Chicksands?
Then you are in the best spot there can be. Keep it off. Ring.