Petrol in a Diesel Car in Bellingham: How Worried Should You Be?
Not started? Then less worried than you probably feel. "Have I ruined it?" is the first thing anyone in Bellingham asks, and the truthful answer is generally no, since petrol left in a diesel tank hurts nothing till it is dragged through your fuel system — by ignition priming, by the starter, or by being driven. Petrol in Diesel is who to ring, with the motor left off, and so it remains that way. Read on 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 repeat it.
Petrol in a diesel: what does it do to the engine?
Passing through a motor, diesel is doing two jobs at once. Before it burns, it protects — and then it combusts. What stops the surfaces inside your high-pressure pump and your injectors from wearing down against each other is the diesel passing through them — they're designed to very fine tolerances.
Badly at the first, not at all at the second: that is petrol. The clattering comes from petrol being designed 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 lubrication the system hinges on, and any pump running on that mixture is wearing itself.
Together, those leave the shape of the problem clear. Not contact but movement is what causes the harm. Petrol in a tank is a fuel problem. The beginning of a mechanical problem is a pump that has been labouring on that petrol — and whatever a worn pump sheds moves on with the fuel to the fuel injectors beyond it.
Bellingham, petrol in a diesel: four cases, from mild to serious
The best case there is: filled up, not once started. Only that tank has petrol in it, and so the job is emptying the tank and cleaning the fuel system where your car sits. This situation can only truly happen at a forecourt: anywhere else, your car got there by being driven.
Your ignition turned on, or a short start. With the system primed, the lines and filter now hold petrol that has come from your tank. Usually little more than draining, rinsing and sorting the filter, so still straightforward.
Those few miles driven meant your pump labouring on fuel weakened by petrol the whole way. Distance is only half of that; how hard it was driven counts just as much. Either way the work runs to the tank, the lines, the fuel filter and fresh fuel through the entire system. The school run to Bellingham Primary School is one thing. A run as far as Newcastle upon Tyne, under 50 miles away, is a very different job. So is any distance on the Central Motorway East, under 50 miles from Bellingham, where the motor has been running hard the whole time.
Driven until it complained. Knocking, a lumpy idle, smoke, a throttle that has gone soft. The engine is telling you the fuel is no longer acting like diesel. Pull up wherever you are — the verge on B6320, a lay-by, a side street — then leave the car where it is. The drain and flush still go first, and they take care of it: if a vehicle is pulled over quickly, permanent damage is very uncommon.
Bellingham motorists and that petrol in a diesel myths they hear
"Top it up the rest of the way with diesel and it'll be fine" — a myth. It won't. Nothing is removed by topping up — you are left with a fuller tank, still the same mixture. The assumption behind that advice — that diesel fuel systems tolerate petrol by percentage — is wrong.
Not so: a current diesel copes with a bit of petrol. Rather, the reverse. Lubrication matters more on newer diesels, not less, because their fuel passes through finer parts at higher pressure.
This is the one that fools people. Myth: "If it starts and drives, there is no harm done." Any petrol motor fed diesel usually won't run, and so the driver stops and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually does; meanwhile your pump wears. Fine and running aren't the same thing.
An old workaround for a different fault lies behind this one. Myth: "Add some two-stroke oil and drive it home." The petrol is still inside your tank after that, and what it has weakened is not put back.
Once the engine has been run, part of that petrol sits in the filter and your lines, not the tank — and your next start sends it right back through your pump. So the myth "drain the tank yourself and you are sorted" does not hold. And, a can of petrol drained by the roadside is truly dangerous.
How petrol ends up: petrol in a diesel
It's seldom carelessness, and no one does it on purpose. A diesel nozzle mostly will not go into a petrol motor, yet the slimmer petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one error simple, and just in that direction.
Routine and the vehicle getting out of step is how it occurs. Hire cars, courtesy cars, and cars that are new to you. A household with one petrol and one diesel on the driveway. Your ordinary forecourt, its pumps now in a different order. Racing for a train at Haydon Bridge and fuelling up en route. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is exactly the moment it takes place. Add a back seat full of children, a phone call or rain, and the hand wins.
Next time you fill up around Bellingham: avoiding petrol in a diesel
- A green handle for unleaded and black for diesel is normal in the UK — but not on each forecourt. Go by the label on the petrol pump, not the colour.
- Plenty of motors state the fuel type inside your filler flap or on the cap, and so check it on your first fill in any car you do not know.
- A coloured fob or a sticker on your diesel's key does more than any amount of meaning to remember, in a home with one of each.
- "Diesel", aloud, before you lift the nozzle — every time a new or hired car needs its first tank. It seems daft. It works.
- Tuck your phone away. This is an easy mistake to make whilst you are thinking about something else.
- Add-on devices exist for vehicles without one, and some diesels are built with a filler that won't take a petrol nozzle. Useful — but a backstop only, never a reason to stop checking the label.
- Spotting it mid-fill? Stop there and then. A weaker mix follows from less petrol inside the tank, but your next step stays the same: do not start the vehicle.
Put petrol in a diesel in Bellingham already?
Short and simple, then, is the order of things. Leave it unstarted, with the ignition switched off too. Yet at the forecourt, at JET or anywhere else? Ask the staff to help you push the vehicle clear of the pump. What was put in, about how much, and whether it's run: tell us that when you ring 0333 366 0103.
If it was AdBlue and not petrol, say so. That is a different issue — corrosion and deposits and not lost lubrication — and it has its own page for Bellingham.
What makes one Bellingham petrol in a diesel job cost more than the next
Four different jobs sit behind the four scenarios above — which is why there's no honest single price. The scenario itself does most of the work of moving your cost. After that it is the ratio — how much petrol got in against how much the tank takes — and then where the car is and whether a van can reach it safely.
That is why our technicians ask three questions before pricing instead of after: what got in, how much, and if it's run. Their replies are what turn a range into one firm number.
About Bellingham, for a moment
Bellingham is a village situated in the north of Northumberland, on the banks of the River North Tyne. Bellingham sits at an elevation of 121 metres, surrounded by rolling countryside and nearby villages such as Redesmouth and Charlton. Bellingham is characterized by its predominantly detached housing stock, reflecting its rural setting. Bellingham is located approximately 28 miles from Newcastle upon Tyne, the nearest city.
Across Northumberland and in Bellingham: fuel drain cover
Bellingham rests in the NE postcode area, and the teams that answer petrol in diesel call-outs there work the locations around it as well — Redesmouth, Hole and Charlton among them. The car does not need to come to us: our technicians drain on a forecourt, in a supermarket car park, in a lay-by or on your own drive.
Bellingham: still at the petrol pump?
In that case, you couldn't be in a better position. Call, and keep it switched off.