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Model specific boards => Golf mk5 => Topic started by: Jayy on 13 May 2009, 22:36

Title: Problem, Diesel In a Petrol..
Post by: Jayy on 13 May 2009, 22:36
as above,

mate of mine, accidently put diesel into a petrol engine

2008 08, 1.4 TSI Match..

drove around 100 yards max..

was £10 petrol in first, roughly 135miles range, £10 diesel put in after range went up to 235

car has not been drove since, its getting cleared 2mr, do you guys think there will be any problems?
Title: Re: Problem, Diesel In a Petrol..
Post by: Alexander on 14 May 2009, 00:00
how did he manage that?the diesel nossle is too big to fit in a petrol car!
Title: Re: Problem, Diesel In a Petrol..
Post by: Wayne on 14 May 2009, 00:11
If it was not started then no damage, now it has been started you may be lucky or could be expensive including the cat failing.
Title: Re: Problem, Diesel In a Petrol..
Post by: Jkctr on 14 May 2009, 08:27
It was driven = its fecked!

How the hell did he put the diesel hose in? Its almost impossible to put diesel in a petrol  :laugh:
Title: Re: Problem, Diesel In a Petrol..
Post by: Martz on 14 May 2009, 09:21
It was driven = its fecked!

How the hell did he put the diesel hose in? Its almost impossible to put diesel in a petrol  :laugh:

Apperently not. Could be messy that....................................................
Title: Re: Problem, Diesel In a Petrol..
Post by: dan_apps on 14 May 2009, 10:21
can be put right but costs £££££££
Title: Re: Problem, Diesel In a Petrol..
Post by: Komenda on 14 May 2009, 10:29

Diesel in petrol is fine, just drain the tank and fill it back up with unleaded. The only thing it could of knackered is the CAT.
Title: Re: Problem, Diesel In a Petrol..
Post by: Ben Lessani on 14 May 2009, 10:43
I would have thought the whole fuel system would be at risk, pump, rail, injectors.

I made a fatal error when I was in Germany a few years back during the World Cup. I filled up half the tank with the black nozzle - when some woman starts waving and shouting something in German, so I stop filling, thinking we had to pay first, my dad, in a rush, pushes me out the way and keeps filling to the top.

Granted, his car was a Diesel - but we filled it to the neck with 2 stroke mix!. This was at 10pm at night, so we couldn't drive the car anywhere. I had to sleep in it, then push it down to this car garage just down the road, they flushed the tank for 10 Euros!
Title: Re: Problem, Diesel In a Petrol..
Post by: Ed30DSG on 14 May 2009, 15:17
It was driven = its fecked!

Not neccesarily, Petrol in a Diesel car is much worse.

You might be lucky and get away with just emptying the tank and filling to the brim with petrol.
Title: Re: Problem, Diesel In a Petrol..
Post by: Komenda on 14 May 2009, 15:25

It will smoke a bit as the diesel burns off but it won't damage the engine. It will damage the cat though, at the very best it will reduce its life.

Petrol in a diesel engine will fcuk it.
Title: Re: Problem, Diesel In a Petrol..
Post by: Rhyso on 14 May 2009, 15:59

Petrol in a diesel engine will fcuk it.

not in my experience

bloke i bought my car off filled mine up with £20 of petrol; it conked out, drained the tank, brimmed it with diesel and 3.5 years later its running sweet as a nut

always thought diesel in petrol was certain death
Title: Re: Problem, Diesel In a Petrol..
Post by: Ben Lessani on 14 May 2009, 16:17
Its usually the other way round, modern diesels rely on the fuel itself to lubcricate a lot of the components (because of the immense fuel pressure they run). Petrol doesn't lubricate by nature, it dries things out - so the end result of petrol in a diesel is normall huge amounts of wear to the fuel pump and injectors.
Title: Re: Problem, Diesel In a Petrol..
Post by: Wayne on 14 May 2009, 19:14
As above petrol in a diesel is a lot worse we have had a few company cars die because of it.
Title: Re: Problem, Diesel In a Petrol..
Post by: R32UK on 14 May 2009, 19:18
Hmm not sure about that.. My brother has done this 4 times (petrol in a diesel) and carried on driving them until they stop. They always seem to keep working afterwards.
Title: Re: Problem, Diesel In a Petrol..
Post by: Wayne on 14 May 2009, 19:22
Hmm not sure about that.. My brother has done this 4 times (petrol in a diesel) and carried on driving them until they stop. They always seem to keep working afterwards.

Olders diesels can cope with it but modern common rails will not, I know on 5th gear a few years back and they had an old diesel which they put petrol in and it carried on working.
Title: Re: Problem, Diesel In a Petrol..
Post by: TeddyKGB on 14 May 2009, 21:47
Petrol in a diesel engine will fcuk it.

Funny :laugh: When I was a nipper I remember my grandad telling me how he would put a tipple of petrol in his diesel to "thin it out" a bit! :laugh:
Title: Re: Problem, Diesel In a Petrol..
Post by: Ben Lessani on 14 May 2009, 22:00
Old diesels can tolerate pretty much anything - but a modern high fuel pressure diesel won't.

The OP is talking about diesel in a petrol though ...
Title: Re: Problem, Diesel In a Petrol..
Post by: R32UK on 15 May 2009, 07:18
Hmm not sure about that.. My brother has done this 4 times (petrol in a diesel) and carried on driving them until they stop. They always seem to keep working afterwards.

Olders diesels can cope with it but modern common rails will not, I know on 5th gear a few years back and they had an old diesel which they put petrol in and it carried on working.


MK5 2.0 TDi  :huh:
Title: Re: Problem, Diesel In a Petrol..
Post by: Wayne on 15 May 2009, 07:59
Hmm not sure about that.. My brother has done this 4 times (petrol in a diesel) and carried on driving them until they stop. They always seem to keep working afterwards.

Olders diesels can cope with it but modern common rails will not, I know on 5th gear a few years back and they had an old diesel which they put petrol in and it carried on working.


MK5 2.0 TDi  :huh:

Very lucky, you may still get problems in the future.
Title: Re: Problem, Diesel In a Petrol..
Post by: R32UK on 15 May 2009, 09:21
Hmm not sure about that.. My brother has done this 4 times (petrol in a diesel) and carried on driving them until they stop. They always seem to keep working afterwards.

Olders diesels can cope with it but modern common rails will not, I know on 5th gear a few years back and they had an old diesel which they put petrol in and it carried on working.


MK5 2.0 TDi  :huh:

Very lucky, you may still get problems in the future.

Now sold  :grin:

(thankfully)