Question about Volkswagen Passat

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The fuel tank had about 10 litres of petrol and by mistake 20 litres of diesel was pumped into the tank.

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Hi,
need to find the fuel line going to the fuel rail on the engine, remove that, get a spare piece of hose and run it into a bucket and turn the ignition on and run it out of gas. If the computer will only allow a small amount of gas then you could over ride the fuel pump by finding the relay for it and jump the relay with a jumper wire. you may have to go to autozone.com and find the fuel pump wire/relay colors there, its free to sign up at autozone. if this is uncharted territory for you go back to autozone and study tank removal and drop the tank. have a fire extingusiher handy or the hose. if unsure take it in to your local mechanic. If you take it to the dealer then they will really let you have it..
jm

Posted on Apr 08, 2011

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Posted on Jan 02, 2017

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What to do if you think you put bad gas in your tank


Hopefully your vehicle will have a drain plug in the bottom of the fuel tank*: remove this & drain the fuel.
With the plug still removed flush about 5-10 litres of fuel thru by putting in thru the tank filler hole as usual.
Replace the drain plug and put a FULL tank of fuel in (this will dilute any residue as much as possible)
*In the case of no drain plug the fuel tank will need to be removed & fuel drained out thru the filler neck, drain fuel, replace tank & procede from the 'put a FULL tank of fuel section of this instruction.
If the vehicle has been started with the bad fuel remove the fuel filter.
If the vehicle has an electric fuel pump* (more modern vehicles ie. Post 1985 [some vehicles still had & still do have mechanicle fuel pumps]) turn the ignition on with the fiter not in place, vthis will flush fuel thru the fuel lines pushing out the bad/old fuel. Take care as the fuel will be under a fair bit of pressure & "sqirt' out.
*If it is a mechanicle pump this can not be done in this way.
Replace the fuel filter with a new one.
Bleed the fuel system & start the vehicle.
Allow the vehicle to idle for 10-15mins before going back to your usual driving.
All shld now be ok but it is a good idea to routinely inspect the fuel system for leaks over the nxt 10 000km or six months (wich ever is earlyest) as in the case of puting petrol in diesel or diesel in petrol the different rubber and plastic items (such as 'o' rings) can begin to deteriate & leak in wich case they will require replacement.

All the best & I hope this is of some help & it works out for you...


Referances: Me, I am an auto mecanic.

May 14, 2014 | 2006 Jeep Grand Cherokee

1 Answer

I mistakingly put some diesel in my petrol swift


You don't say how much diesel you put in or how much petrol was in tank in the first place. If the amount of diesel is less than 5 % of the total then you may try filling tank with petrol and keep topping up to dilute the diesel. The best fix would be to drain fuel tank completly and refill with petrol. If tank has a drainplug , this will be easy but if no drain plug you will have to remove tank from vehicle to empty it.

Nov 07, 2010 | Suzuki Swift Cars & Trucks

2 Answers

I put 1 litre of petrol in my diesel tank by mistake i topped it up with 20 litres of diesel straight away will it be ok to carry on using it


when you think about the ratio 20:1 thats very little so i would say just burn it out. a diesel burns off of combustion not fire

May 10, 2010 | 2006 Ford Focus

1 Answer

Hi there ive got aproblem with fuel tank ran low 3 litres in it car exelerates in neutral but looses power in gear ive changed fuel filter and filled up with diesel do i need too bleed fuel pump or filter


all veedub have self bleeding systems, if smokey, try a fuel additive redexe/wynns to see if you get any improvement first.check filter is still clean after 100/200 miles,pipe may have got bits in it.... (i put a gallon of petrol in 10 gallons of diesel and the difference after was amazing,although you have to be gentle,no hard acceleration/heavy loads for 200 miles)

Feb 22, 2010 | Audi 80 Cars & Trucks

2 Answers

I have put 8 litres of diesel in my 2005 renault scenic i have topped it up with 25 litres of petrol and run it for about 20 miles so far will this be ok once the the tank is empty


The 8 liters of diesel mixed with the 25 liters will make the vehicle smoke a little but if you continue to dilute the diesel/petrol mixture with petrol as your tank level goes down you should have minimal problems. When the tank gets to half you should refill it with petrol for at least two times. The main two problems I could think of that would cause you any concern would be the fuel filter getting partially plugged and the injectors gumming up. By continuing to dilute the tank with petrol you should be okay because the filter and injectors will clean themselves up while you drive. Just make sure you do not take any short drives. Let the engine warm up to operating temperature until you have ran at least two complete tanks of petrol through it.

Nov 16, 2009 | 1994 Nissan Maxima

3 Answers

How to drain ford fusion fuel tank


The "MOST EFFECTIVE
" way is to REMOVE The FUEL TANK and DRAIN it By Tipping it over to Pour From FUEL INLET HOSE. Im Sure you Dont want to Here this as it Requires Much WORK . , BUT It IS The MOST EFFECTIVE Way to EMPTY The TANK.

Oct 31, 2009 | 2004 Ford Fusion

1 Answer

1999 landrover range rover 2.5 diesel put petrol


I would start by looking for the valve on the fuel rail (or at the filter housing), if you disconnected the fuel pipe from the filter feed you will have a lot of air in the system (and diesels do not like air in the feul system) you will need to have someone crank the motor over while you push in on the schrader valve to release the air out of the system until you get fuel to flow steady out of that port (this may take a short period of time), then you should be able to start the vehicle... would also recommend replacing the fuel filter as well. Hope this helps.

Mar 10, 2009 | 2000 Land Rover Range Rover

1 Answer

Petrol instead of diesel


Hi

This is not quite recommended, and to do a 100% job, you should really drain the tank, and refill with just diesel, and renew the fuel filter.

But if it is running acceptably, drive it gently, and keep refilling with diesel.

Good Luck !

Don´t forget to give me a FixYa rating please.

John.

Feb 04, 2009 | 2006 Peugeot 405

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