Petrol in my Diesel Car
Doh!Posted 3 years ago
Make sure you get it all out. Suck it out using a pump from the return side of the fuel filter – this will clear the petrol from the fuel pump as well. Prime the system with fresh diesel from the same place – this will help you start it. Don’t be surprised if it is a bugger to start – jump leads from a running car will help it turn over quicker and you might have to resort to a sniff of carb cleaner. DON’T use easystart- it is too violent on modern diesel engines.
My wife did this in her Saab last week. (Honest!) I pulled the sender unit out and siphoned as much as I could out unfortunately she had driven it until it stopped and I couldn’t get it going again. I dropped it off at my local repair shop.Posted 3 years ago
4 hours and £40 later was picking it up all sorted.
As above, I recommend adding some diesel conditioner for good measure.
Anyone need 35 litres of slightly contaminated petrol. (The car was well into the red when she put the petrol in it.)StonerSubscriber
I did it last year.Posted 3 years ago
AA wanted £200 to deal with it, so I got them to relay me home for free (under my breakdown policy) and then used a drill powered pump to extract all the petrol from the tank via the sender port. Ive been using the dirty petrol every since in a range of garden tools – mower, flail, chainsaws and strimmer with no problems. It was about <5% diesel.feckinlovebbqMember
Depends on the engine.
The more modern the engine the more fussy they are.
Before going biking a mate of mine filled his tank with petrol from near the red line in his 2005 tdci modeo. He realised just after he’d done it. Phoned a local mechanic mate who didnt seam all that conserned just said go buy some cheap engine oil and fire that in to thicken things up a little and run it and keep topping up with diesel when you get a chance. It will be fine.
It was fine. No issues
Mondeo engines are pretty rough and ready. so as previously stated depends on the enginePosted 3 years agobikemike1968Member
Oh, I forgot to mention.Posted 3 years ago
Now sell the car. At some point down the line the high pressure fuel pump will fail due to the lack of lubrication while running on unleaded. You do not want to be owner at that point (big bill).
Of course, if you buy another diesel there is no guarantee the last owner hasn’t also mis-fueled it…franksinatraSubscriber
I brimmed my wifes 107 last year from red line, diesel in a petrol engine then drove it until it conked out.
Green flag guy did a cash job for me (it was out of hours), he took it back to the garage, drained it and returned car (and diesel) to me for £50.
I was told all sorts of tales of woe and doom about writing off the engine, it will blow in 6 months, the cat converter will be trashed, I have to sell it etc. After a tank of unleaded and some redx from Halfords the car ran better than ever and is still going perfectly 12 months or so later. Didn’t even need a filter change as the 107 doesn’t have one!Posted 3 years agogrowingladMember
Did this a few months ago, don’t stress, if you switched it off and it didn’t conk out, you should be okay.
Diesels do make a funny noise running on petrol though, you loose the low down grunt too 😉
Although you will always and I mean always start to have a higher heart rate every time you fill up from now on.Posted 3 years ago
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