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Model specific boards => Golf mk6 => Topic started by: lbasic on 25 April 2011, 23:07

Title: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 25 April 2011, 23:07
Golf MK6 2.0 TDi 140 GT 3dr 09 Plate.

The tank capacity is 55 Litters for the above car and I accidently filled 22 Litters of UL Fuel so ended up with the mix 33 Litters of Diesel and 22 Litters of UL fuel. I have driven the car for 200 Miles on the motorway without noticing anything wrong. It was running perfect. I stopped to get some groceries at the local shop and then when trying to start the car it would not start.  It just turns and nothing. Called RAC who agreed who towed me home. I am planning to drain the tank and change the fuel filter this weekend. Is there anything else that I should try doing as I rely don’t want to pay ££££ to the Local Garage before I explore everything possible. Reading the forums some of the guys are suggesting to take the car to the scrap as it will cost too much to repair, they are talking about full engine failure not just the , pump, injectors and filters. Please help.




Thank you!
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: am1w on 25 April 2011, 23:23
How unfortunate but easily done when you lack concentration.
You should not have driven the car with such a  Diesel/petrol mixture over such a distance. Surely you realised this was not good for the engine. Do you not think you should get it properly checked by a competent mechanic now?
Best of luck.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Buck on 26 April 2011, 00:20
I've heard that running a diesel with UL is "catastrophic" in that the whole system is affected due to the high specification of the modern diesel engine and the tolerances required to run such.

Putting Diesel into a petrol car is recoverable relatively easily whereas the other way around as in your case is still recoverable but will require many £££s :(

Good luck
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: AGB on 26 April 2011, 07:32
Golf MK6 2.0 TDi 140 GT 3dr 09 Plate.

The tank capacity is 55 Litters for the above car and I accidently filled 22 Litters of UL Fuel so ended up with the mix 33 Litters of Diesel and 22 Litters of UL fuel. I have driven the car for 200 Miles on the motorway without noticing anything wrong. It was running perfect. I stopped to get some groceries at the local shop and then when trying to start the car it would not start.  It just turns and nothing. Called RAC who agreed who towed me home. I am planning to drain the tank and change the fuel filter this weekend. Is there anything else that I should try doing as I rely don’t want to pay ££££ to the Local Garage before I explore everything possible. Reading the forums some of the guys are suggesting to take the car to the scrap as it will cost too much to repair, they are talking about full engine failure not just the , pump, injectors and filters. Please help.

Well, a work colleague of mine had his mother manage the same feat when she borrowed his car and it cost an obscene amount of money to rectify. I remember him joking that he was debating the offset of losing control and driving it into a brick wall versus the loss of his NCB. It was a diesel Tiguan, I think the 2.0 TDi which might be the same power plant as your GT. He ended up buying a number of new components as the labour cost of cleaning the existing parts worked out as being more expensive. It wasn't shy of £5k to fix if I recall correctly but given that his vehicle was worth around £35k with all the extras, it made sense to do it. He kept the car for 6 months after that but said that it didn't feel the same and sold it. I don't think his mother got a Christmas present last year as a result.  :wink:

Looking at the positives, it's a mistake you won't make again.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: R32UK on 26 April 2011, 08:41
My brother put petrol in his Golf GTGtdi 140 3 times over 2 years. Still went fine for another 80k or so... but i dont think he drove it for 200 miles after he had  :lipsrsealed:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: MAW73 on 26 April 2011, 09:14
Sounds like an Ibasic error  :evil:

Hope you get it sorted.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 26 April 2011, 09:30
Thank you all for your replies.

I am going to drain the fuel and change the fuel filter, will also attempt to flush the fuel pipes. Will perhaps need to dip the fuel filter in to diesel first. If this doesn’t make the car start up I will call the fleet company and tell them that it will not start. Forgot to mention it is a company car that company leases for me.  I agree it is a ultimate lbasic mistake but too late for that now.


Thank you!
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: MAW73 on 26 April 2011, 09:47
Thank you all for your replies.

I am going to drain the fuel and change the fuel filter, will also attempt to flush the fuel pipes. Will perhaps need to dip the fuel filter in to diesel first. If this doesn’t make the car start up I will call the fleet company and tell them that it will not start. Forgot to mention it is a company car that company leases for me.  I agree it is a ultimate lbasic mistake but too late for that now.


Thank you!


Good luck with it  :smiley:


Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Buck on 26 April 2011, 10:16
As you say, it's happened. Hope you get it sorted ;)
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: p3asa on 26 April 2011, 11:58
I've heard that running a diesel with UL is "catastrophic" in that the whole system is affected due to the high specification of the modern diesel engine and the tolerances required to run such.

Putting Diesel into a petrol car is recoverable relatively easily whereas the other way around as in your case is still recoverable but will require many £££s :(

Good luck


It must be the new modern diesel engines that are causing the problems then, as was one of the reasons that the diesel engine came about was to run on sh!te basically?

I know taxi drivers and HGV drivers used to put a 1/4 of a tank of petrol into their diesel engine to stop it freezing in winter.  Plus look at the diesel engines that you can basically put vegetable oil into and it will still run.

Now diesel into a petrol engine is a big no no. It probably wouldn't even make it out the garage!!

lbasic have a search on here as it was done not that long ago by someone and as far s I know things turned out fine.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Steve30 on 26 April 2011, 12:08
^^^ Yes that was moi but I onley put 9litre's in the tank and I never drove it had to be drained off also changed the fuel pump just in case . Why the arse would you drive 200 miles  :shocked: :shocked: :shocked: :shocked:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 26 April 2011, 12:23
Steve30,

I know it’s a disaster will not do it again for sure! Its only when the car would not start and the battery was OK I thought let me just check my receipt and it was there in clear that I filled it with £30 worth of PETROL which equates to 22 Litters.  I have used about 18 Litters of the mixture. I’m guessing now that the glow heaters just can’t get the mixture going or perhaps the Diesel pump has ceased up due to not been lubricated since petrol actually cleans greasy Diesel ! What I do need it’s the best way to drain the fuel tank instructions, I don’t want to do it using the existing diesel pump and just turning the ignition as that will make more fuel go through it and damage the pump if it is not already dead! If I had an old pump from another car that would be ideal but I’m not that fortunate.


Thanks.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Keithuk on 26 April 2011, 13:06
I know taxi drivers and HGV drivers used to put a 1/4 of a tank of petrol into their diesel engine to stop it freezing in winter. 
No you put paraffin in the diesel to stop it freezing plus it does have any tax.

I wouldn't have run on it for 200 miles as the diesel is the lubricant for the injection pump internals and injectors. I just hope you don't have any problems in years to come, though the warranty on the fuel injection pump is 5 years.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: p3asa on 26 April 2011, 13:16
I know taxi drivers and HGV drivers used to put a 1/4 of a tank of petrol into their diesel engine to stop it freezing in winter. 
No you put paraffin in the diesel to stop it freezing plus it does have any tax.



Maybe you do Keith but taxi drivers and HGV drivers used to put "petrol" in their vehicles to stop it freezing.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: am1w on 26 April 2011, 18:15
But could you not smell the difference?  :rolleyes:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Exonian on 26 April 2011, 18:50
But could you not smell the difference?  :rolleyes:

You could for a quid:
http://www.hotukdeals.com/deals/think-diesel-audible-warning-device-1-poundland/925309

 :smiley:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: KennyGTI on 26 April 2011, 19:57
I think you will be alright mate, the fact it ran for 200 miles i think you have been fortunate there has   been enough diesel in the system. But, like you say, it lubricates the pump etc so how far down the line do you go in replacing and cleaning your fuel system? I think you are doing the right thing though, drain the system, refill the full tank with diesel and see how it goes. Keep us posted.

Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Keithuk on 26 April 2011, 21:42
Maybe you do Keith but taxi drivers and HGV drivers used to put "petrol" in their vehicles to stop it freezing.
The ignorant ones do only because they want to pay tax.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: DRC on 26 April 2011, 23:02
I feel for you, my dad put a full tank of petrol in an older diesel Ford Galaxy at 3am in the morning, it wasn't until he started to drive did the car not go over 50mph, it was towed and then drained, IIRC it didn't need any 'major' parts replacing. Going back a few years now though, as said, the tolerances are a lot different now for modern diesels.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: p3asa on 26 April 2011, 23:50
Maybe you do Keith but taxi drivers and HGV drivers used to put "petrol" in their vehicles to stop it freezing.
The ignorant ones do only because they want to pay tax.


Nothing to do with paying taxes I reckon. Far more convenient driving into a garage and getting it from a pump than hauling it from a shop.

Who on earth would rather pay more for a litre of paraffin than a litre of unleaded just to avoid some tax? 
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Keithuk on 27 April 2011, 00:15

Who on earth would rather pay more for a litre of paraffin than a litre of unleaded just to avoid some tax? 
You would if you think petrol is dearer than paraffin?

True its not as convient.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: The Doc on 27 April 2011, 07:10
I think it will be ok  :wink:

Any news?
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 27 April 2011, 09:12
No news yet as I did not get a chance to do anything last night. I will however give full update here of the steps I have taken and the results as soon as I receive an old pump that’s been sent to me to get the tank drained.

Thank you.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: The Doc on 27 April 2011, 10:02
No news yet as I did not get a chance to do anything last night. I will however give full update here of the steps I have taken and the results as soon as I receive an old pump that’s been sent to me to get the tank drained.

Thank you.


Good plan - keep calm  :wink:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: p3asa on 27 April 2011, 11:29

You would if you think petrol is dearer than paraffin?

True its not as convient.

Well I certainly do. And back in the days when you actually did have to add to the diesel to stop it freezing, petrol would have been by far the cheapest.

So do you have a cheap supplier of paraffin? Could be good for my old mans greenhouse heater.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 27 April 2011, 21:12
Here is what I finally did;

1.)   20 letters of diesel from the station.
2.)   2 X 4 Meters pipes. Homebased £8
3.)   1 X Drill Powered water pond pump from eBay - £5
4.)   Disconnected the two pipes from the Fuel filter. On close to the side is the Feed to the filter and the other its return of unused fuel to the tank. There are 4 in total connected to the fuel filter.
5.)   I then connected the two pipes that I got from Homebased  and then sucked and give it my best blow to get the Fuel out of the engine. Be careful that it doesn’t go in to your mouth.
6.)   I then tied the thin cloth on the end of the feed pipe to act as a filter and drop the pipe in to the fuel container that I got from the local pump.
7.)   I then sucked from the return pipe until the diesel got in to the filter.
8.)   Dropped the return pipe in to the same container as the feed.
9.)   I then started the Car and hey presto it started first time!
10.)   Left it running for 10 min.
11.)   Switched OFF and connected the Drill pump to the feed pipe from the Car Tank and drained all fuel in to a container.
12.)    Connected the pipes back to the Fuel filter and pored 30 Litters of diesel in to the tank.
13.)   Started the car again first time.
14.)    Disposed the mix fuel that I got out of the tank in to the manhole at the side of the road.
15.)   Drove to the nearest garage and filed the car to top.
16.)   I noticed NO difference what’s so ever with the car.

Don’t believe anyone who tells you that you need to take it to the main dealers and get all components changed. You don’t! Don’t ever tell the main dealer what has happened as they will try to void the warranty! Don’t feel in with the wrong fuel! Why did my car not start? Well it’s because it has a sensor and if it does not detect right fuel it will not start simple. This is put in place to prevent expensive damage to the engine. If it was a 2000 car then things would have been different. Love the GOLF!
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: am1w on 27 April 2011, 21:31
Basically, you have been a careless clever boy. Happy driving.
Love the Golf too.  :smiley:

PS: It's litres! No wonder you misfueled!  :wink:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Saint Steve on 27 April 2011, 21:59
well done Sir for putting fuel down a manhole cover.   :angry: :angry:

Very clever.. Ever heard of a waste oil disposal?

Obviously not
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Jimmymature on 27 April 2011, 22:03
well done Sir for putting fuel down a manhole cover.   :angry: :angry:

Very clever.. Ever heard of a waste oil disposal?

Obviously not

I'd assumed that was a joke about putting it down the manhole, FFS :angry:


Jim
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 27 April 2011, 22:11
Yes that was a joke I needed to add some spice to the post!  :wink: It’s in my garage and tomorrow I’m taking it to the garage close to me to ask them to dispose it. Oh thanks am1w  for the litres correction.
Thanks to everyone on this group for all your help!

If you ever put petrol in to diesel car call me and don’t take it to the main dealer!  :laugh:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: am1w on 27 April 2011, 22:28
Yes that was a joke I needed to add some spice to the post!  :wink: It’s in my garage and tomorrow I’m taking it to the garage close to me to ask them to dispose it. Oh thanks am1w  for the litres correction.
Thanks to everyone on this group for all your help!
If you ever put petrol in to diesel car call me and don’t take it to the main dealer!  :laugh:

I just laughed at the manhole disposal knowing full well you were so proud of your performance that a tiny mistake would be jumped upon with great alacrity and without any congratulation for your hard work.

Congratulations and take care.

Asker  :smiley:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 27 April 2011, 22:45
and it worked “manhole” has taken the focus of the main issue.

Thnaks man.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Buck on 27 April 2011, 22:58
Well Done for the DIY solution. Fingers crossed.


Adrian
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Saint Steve on 28 April 2011, 12:00
Yes that was a joke I needed to add some spice to the post!  :wink: It’s in my garage and tomorrow I’m taking it to the garage close to me to ask them to dispose it. Oh thanks am1w  for the litres correction.
Thanks to everyone on this group for all your help!
If you ever put petrol in to diesel car call me and don’t take it to the main dealer!  :laugh:

I just laughed at the manhole disposal knowing full well you were so proud of your performance that a tiny mistake would be jumped upon with great alacrity and without any congratulation for your hard work.

Congratulations and take care.

Asker  :smiley:

Oh yeah, sorry for not congratulating on putting the wrong fuel in the 1st place :evil:


Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: am1w on 28 April 2011, 12:37
SS: You need to take your holy orders again. :grin:
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: GolfTi on 28 April 2011, 19:42
Yes that was a joke I needed to add some spice to the post!  :wink: It’s in my garage and tomorrow I’m taking it to the garage close to me to ask them to dispose it. Oh thanks am1w  for the litres correction.
Thanks to everyone on this group for all your help!

If you ever put petrol in to diesel car call me and don’t take it to the main dealer!  :laugh:


Hope so. Massive fine and rightly so if you did.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Leon27 on 30 April 2011, 16:30

A little suggestion.. If you can, remove the fuel sender unit and look into the fuel tank. If there are any signs of magnetic swarf then the car isn't ok and will need further repairs. I've done quite a few of these at my workplace (not VW) and I agree the procedure to repair is very long and expensive. However if that swarf gets into the pump then injectors, the car will not have a long life.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: Jimble on 30 April 2011, 20:01
Sounds like good advice?
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: lbasic on 02 May 2011, 22:02
FYI it has been 5 days, done 235 miles no issues what’s so ever.  I’m not taking the sender unit off as I am not sure if I will be able to put the seal back properly. Golfti I’m not sure if your post refers to me about holy orders and massive fine. Sorry I don’t understand what it means.

Thanks all agin.
Title: Re: UL Petrol filled in to Diesel Engine :-(
Post by: am1w on 03 May 2011, 09:59
Golfti am1w I’m not sure if your post refers to me about holy orders and massive fine. Sorry I don’t understand what it means.
Thanks all agin.

Regarding Holy Orders was addressed to Saint Steve (SS) as he is a fallen saint for admonishing you for misfueling! :grin: