Member Since: 29 Aug 2012
Location: N Yorks
Posts: 1936
Is it worse with the Disco than other cars? SWMBO put petrol in my Dads brand new Golf. Car started coughing and spluttering and to cut a long story short tank was drained & refilled with diesel. Car was fine and sold 12 years and 100,000 miles later. Still see it driving around locally.
7th Oct 2017 1:46 pm
Dixie Dean
Member Since: 06 May 2006
Location: Halewood
Posts: 298
Thanks for that more positive reply RDB. There does seem to be 2 very polarised viewpoints on the net, which lead me to conclude that I could take a chance and it may be OK, to the complete doomsayers who say there's no chance, it will fail.2008 D3 HSE Stornoway Grey with Ebony Leather, towing a Coachman VIP 575
7th Oct 2017 2:22 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
The reasons there are different views is simply because there are different diesel fuel systems, the modern common rail diesel will not tolerate petrol especially to the point where it stopped running itself, older non common rail engines are much more tolerant of carp fuel, hence people with veg oil/waste oil/dirty diesel get away with it, damage is still being done but the engine will still run, the cost will come later, with common rail it really is time to sell it asap.
The reason common rail wont tolerate the petrol is the tolerance are so fine and the pressures so high, as said above the petrol strips the lube off and the metal wears away causing chaos.
The van guys at work did lots of misfuels (council motors) new injectors, recon pump, drain/flush tank and they were nice easy 4 pots.
7th Oct 2017 2:31 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
RBP wrote:
Is it worse with the Disco than other cars? SWMBO put petrol in my Dads brand new Golf. Car started coughing and spluttering and to cut a long story short tank was drained & refilled with diesel. Car was fine and sold 12 years and 100,000 miles later. Still see it driving around locally.
How old was the golf? and was it the 1.9 PD engine?
7th Oct 2017 2:31 pm
tayaste
Member Since: 15 May 2013
Location: Chester
Posts: 7633
SWMBO stuck £20 in her 1.6 diesel MY10 golf.
After she realised what she done, I filled the rest of the tank with diesel. No problems going forward, it was a company car so i had nothing to lose.
Last edited by tayaste on 7th Oct 2017 2:59 pm. Edited 1 time in total
7th Oct 2017 2:49 pm
RBP
Member Since: 29 Aug 2012
Location: N Yorks
Posts: 1936
lynalldiscovery wrote:
RBP wrote:
Is it worse with the Disco than other cars? SWMBO put petrol in my Dads brand new Golf. Car started coughing and spluttering and to cut a long story short tank was drained & refilled with diesel. Car was fine and sold 12 years and 100,000 miles later. Still see it driving around locally.
How old was the golf? and was it the 1.9 PD engine?
It was an 05 plate 1.9
7th Oct 2017 2:59 pm
comedyharvey
Member Since: 04 Jul 2010
Location: Gloucestershire
Posts: 1727
Are there any experiences of diesel engines going totally tits up after a petrol contamination?
I understand the theoretical problems but how often does it actually lead to damage and serious problems if you just flush out the system with diesel?
Just curious.
.Arthur.
Comedy was a horse, Harvey a dog, both sadly gone. Thought I was choosing a password!
Currently;
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Previously;
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7th Oct 2017 3:01 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26698
Personally, if it's running ok I would just carry on driving it. What's the worse that can happen? It stops and needs a new Hp pump, lift pump and injectors.
I don't know how long you intended to keep the car for, but I'd bet it would cost you a lot more to get rid of it and buy something else. And who's to say the car you buy to replace it hasn't been misfuelled back down the line, and sold on.
7th Oct 2017 3:49 pm
Moo D3 Decade
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7th Oct 2017 4:24 pm
Dixie Dean
Member Since: 06 May 2006
Location: Halewood
Posts: 298
comedyharvey wrote:
Are there any experiences of diesel engines going totally tits up after a petrol contamination?
I understand the theoretical problems but how often does it actually lead to damage and serious problems if you just flush out the system with diesel?
Just curious.
.
It would be very interesting to know how many people who didn't replace their fuel systems ended up having problems later, as otherwise everything is very anecdotal.2008 D3 HSE Stornoway Grey with Ebony Leather, towing a Coachman VIP 575
7th Oct 2017 4:57 pm
geoffsnook
Member Since: 13 Jun 2014
Location: south wales
Posts: 3169
I did put a tenner 's worth of petrol in mine about 18 month's ago realised and then filled to brim with diesel and ran it for 12 months with no issues then sold it on but it was running fine Discovery 3 se gone
Range rover sport supercharged here:)
7th Oct 2017 5:49 pm
Red Merle
Member Since: 30 Aug 2014
Location: Liskeard
Posts: 7438
highlands wrote:
Is there any type of filter that could be placed post-HPFP to stop/check any potential metal fragments getting to the injectors?
Bear in mind that the HP diesel pump pressurises the fuel to between 20,000 and 30,000 PSI (yes, really!), it’s not a system that you’d want to cut into and modify in any way!2011 - 2015: 3 x FL2
2015 - 2017: 2 x D4
2017 to date: FFRR SDV8
2023 to date: FL2 as a second car
2021 to date: Hinckley built ‘14 Triumph Trophy 1200
2022 to date: Hinckley built ‘14 Triumph Trophy 1200 & sidecar!
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7th Oct 2017 6:09 pm
Red Merle
Member Since: 30 Aug 2014
Location: Liskeard
Posts: 7438
It’s not to be recommended, but relatively small quantities of petrol will sit on top of the diesel in the tank and as long as you keep topping the car up, then the petrol will be kept away from the tank outlet. Keep this going for around 2,000 miles and the petrol will gradually mix into the diesel and pass through the system relatively harmlessly.
I don’t know how the OP seems to have got away with it so far, but I would still assume that the high pressure fuel pump, the filter, the pipes and seals, along with all six injectors might still be toast until a few thousand miles have passed.
I hope he’s lucky 2011 - 2015: 3 x FL2
2015 - 2017: 2 x D4
2017 to date: FFRR SDV8
2023 to date: FL2 as a second car
2021 to date: Hinckley built ‘14 Triumph Trophy 1200
2022 to date: Hinckley built ‘14 Triumph Trophy 1200 & sidecar!
(One of only two known to exist in the world!)
7th Oct 2017 6:20 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
RBP wrote:
lynalldiscovery wrote:
RBP wrote:
Is it worse with the Disco than other cars? SWMBO put petrol in my Dads brand new Golf. Car started coughing and spluttering and to cut a long story short tank was drained & refilled with diesel. Car was fine and sold 12 years and 100,000 miles later. Still see it driving around locally.
How old was the golf? and was it the 1.9 PD engine?
It was an 05 plate 1.9
Most likely a PD engine which runs unit injectors pressurised by the cam shaft, the injectors run at really high pressure but the rail that feeds them is only about 60psi unlike the 20 odd thousand psi of common rail jobbies.
I was told that common rail systems and Im not sure how true it is, as the pressures are so high there are no seals just amazingly tight tolerances?
7th Oct 2017 6:51 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Dixie Dean wrote:
comedyharvey wrote:
Are there any experiences of diesel engines going totally tits up after a petrol contamination?
I understand the theoretical problems but how often does it actually lead to damage and serious problems if you just flush out the system with diesel?
Just curious.
.
It would be very interesting to know how many people who didn't replace their fuel systems ended up having problems later, as otherwise everything is very anecdotal.
Guy at work misfueled his 330d, drained it out and a few weeks later had starting issues due to injector leak off, sussed out which one was duff, changed that then another went down and so on, he gave up and got rid of it.
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