Kept Driving With Petrol in a Diesel Hyundai i40?
As soon as it is safe, pull over and switch the motor off, and keep it off. Running on with petrol in a diesel Hyundai i40 only takes the petrol further in. We can still put it right wherever you've stopped, and if it is caught soon, lasting harm is very rare.
When Petrol in Diesel comes out to wherever your Hyundai i40 has stopped, the petrol is cleared out of the fuel system and your tank emptied. It's on clean diesel and running by the time we leave.
Spotting petrol in a diesel i40
To begin with, petrol inside the fuel tank often makes little difference to how a diesel i40 drives, so the signs show up a couple of miles later on. The following are the signs most often spotted if the fuel tank has AdBlue or petrol in it:
- the engine loses power, particularly whenever you ask it to pull
- rough running, or an uneven idle
- there is more smoke than normal from the exhaust
- warning lights appear
- it stalls and might not restart
Your receipt shows what was put in, so check it if any of these began after you filled up.
Wrong fuel in your Hyundai i40: what driving on it does
The fuel tank keeps wrong fuel in your Hyundai i40 where it is until it's pulled out by the motor. Once you drive, it is drawn through the injectors, the filter and your injection pump. Petrol dilutes the diesel that lubricates the fuel pump and your injectors as it flows through them, and running the i40 on carries that mixture into more of the fuel system.
Stopping the moment you can is wiser than completing the journey for that reason. Driving a long way on contaminated fuel is what can cause harm, and when a motor is stopped early, draining and cleaning are usually all it needs.
If you have the i40 1.7 CRDi or another version of the i40, nothing is different.
We come to where you've stopped
There's no reason to take the i40 anywhere. No tow needs to be booked and there is no reason to start it, as we come to it at the roadside or outside your house.
With the hazard lights on, stand away from the traffic somewhere safe when the road next to you is busy.
Ring 0333 366 0103 then say where you are, what i40 it is and roughly how far you have driven. If the badge shows the version, such as the i40cw 1.7 CRDi, that helps too.
Fuel drain on your Hyundai i40 after it was driven
A fuel drain on your Hyundai i40 after it has been driven goes a step further than one on the forecourt. We drain your fuel tank first, then open your fuel lines and rinse them through with the filter, so that no petrol is remaining between your tank and the engine. Clean diesel goes in, the fuel system is primed, and we start the motor to make sure it runs smoothly.
If the engine has run with AdBlue in a diesel Hyundai i40
Uneven running, smoke and warning lights are the normal signs once you've driven on AdBlue in a diesel Hyundai i40, and the car might stall. As AdBlue settles to the base of the tank, where your pump takes its fuel, it's in your fuel line quickly, and it does not burn or lubricate. The urea crystallises in the filter and the fuel lines as its water dries.
AdBlue removal from a diesel Hyundai i40
Draining your fuel tank comes first with AdBlue removal from a diesel Hyundai i40 that has been run, and then the crystals are cleared from your fuel lines and your fuel filter, with your fuel filter changed if it needs it.
A dedicated AdBlue tank, if your i40 has one, is not touched. The work is about liquid in your diesel tank, and does not involve removing or turning off an AdBlue system.
Engine sizes and Hyundai i40 fuel tank capacity
Each version of the Hyundai i40 in our figures comes with a diesel tank of 70 litres.
On this diesel i40, the versions wear CRDi badges.
Engine size is 1.7 litres across the versions in our list.
| Version | Fuel tank |
|---|---|
| Hyundai i40 1.7 CRDi | 70 litres |
| Hyundai i40cw 1.7 CRDi | 70 litres |
The price of a fuel drain on the Hyundai i40 after a drive
The price of a fuel drain on the Hyundai i40 after it has been driven depends largely on how far it travelled and where it has stopped, and whether it was petrol or AdBlue makes a difference as well. Those details are what we need when you phone, and with them we can tell you what the job will involve.
Driven with petrol in a diesel Hyundai i40: your questions
Has the petrol ruined my i40?
It's very unlikely to be. If the vehicle is stopped soon, emptying and cleaning the fuel system is what we do where you've stopped, and damage that lasts is rare after that.
Is it OK to drive it home first?
We'd ask you not to. Each mile on tainted fuel takes it further through your system, and we're able to drain the i40 where it sits, which means there's no reason to shift the vehicle.
What do I do if it has stalled and won't restart?
Please leave the car instead of trying again, as each attempt pulls more of that mixture through. We start it for you after emptying and flushing it, putting clean diesel in and priming the system.
Do you need to know which i40 I have?
There are 2 diesel versions of the i40, and the badge on the tailgate shows which one you have. Knowing that helps us when you ring.
Wrong fuel in my Hyundai i40: will insurance cover it?
Some policies offer misfuelling cover, and so it's worth looking at yours after the car is dealt with. We come out either way.