Sucking out ad blue with a vacuum?
Discussion
I have overfilled my ad blue tank and it has thrown a fault on the EMS as the ad blue tank level cannot be read. I am on the 492 mile coundown to the engine not starting.
I have tried to siphon out the excess but the tankpossibly has some sort of siphon prevention device from getting a pipe down the neck into the tank.
Videos on the net suggest the dealer can pump it out but how do they do it? Video doesnt show exactly how they do it.
Question: would a vaccum pump be capable of extracting the excess ad blue? I see they sell manual and 12v vacum pumps that claim to remove oil and other fluids.
Worth a try with a vaccum pump as they do seen to have different sized pipes https://www.onbuy.com/gb/7l-extractor-pump-manual-...
I have tried to siphon out the excess but the tankpossibly has some sort of siphon prevention device from getting a pipe down the neck into the tank.
Videos on the net suggest the dealer can pump it out but how do they do it? Video doesnt show exactly how they do it.
Question: would a vaccum pump be capable of extracting the excess ad blue? I see they sell manual and 12v vacum pumps that claim to remove oil and other fluids.
Worth a try with a vaccum pump as they do seen to have different sized pipes https://www.onbuy.com/gb/7l-extractor-pump-manual-...
I would not be surprised if it still continues the countdown even if you do take some out, probably has some system whereby it has to be reset by the Mfg.
Is it a Mercedes?
Has the car actually told you that it is overfilled or are you thinking/hoping that's what has caused the countdown?
Is it a Mercedes?
Has the car actually told you that it is overfilled or are you thinking/hoping that's what has caused the countdown?
MethylatedSpirit said:
Shove a tube in, suck until the liquid (almost) reaches you and then place the end of the tube lower than the body of liquid you wish to empty.
Appropriate user name. It never works, you *always* get some of the liquid in your mouth, and given what adblue essentially is, I *do not* want that in my mouth…(Also note op comment about siphon prevention device)
Monkeylegend said:
I would not be surprised if it still continues the countdown even if you do take some out, probably has some system whereby it has to be reset by the Mfg.
Amazing isn't it - we've had fuel tanks and gauges for donkeys years which when they are full, generally the needle stays right at the top and drops as the liquid is used.But let's introduce a different system on the AdBlue where by if you fill it to the top, it requires dealer attention to reset the system. Call me cynical, but it almost seems like an engineered 'fault'.
Depending on the car make all depends on if it will sort itself out.
If vw they use an ultra sonic sensor in the top of the tank I believe overfilling causes this sensor to throw a wobbler and will need dealers to recalibrate and sort it.
Peugeot Citroen and such driving it for a bit should eventually make it think long and hard about it then play ball and reset.
If not any halfway decent garage should have the gear and software to recalibrate and tell it to stop being a moron.
It’s an absolute crap system on most cars but got to save the swamp donkeys.
My very transporter gets ignored till it says 300 miles then gets 10 litre and is fine.
I used to fill it at 1000 mile warning but that caused the above issue and a visit to the dealers to sort
If vw they use an ultra sonic sensor in the top of the tank I believe overfilling causes this sensor to throw a wobbler and will need dealers to recalibrate and sort it.
Peugeot Citroen and such driving it for a bit should eventually make it think long and hard about it then play ball and reset.
If not any halfway decent garage should have the gear and software to recalibrate and tell it to stop being a moron.
It’s an absolute crap system on most cars but got to save the swamp donkeys.
My very transporter gets ignored till it says 300 miles then gets 10 litre and is fine.
I used to fill it at 1000 mile warning but that caused the above issue and a visit to the dealers to sort
ChevronB19 said:
MethylatedSpirit said:
Shove a tube in, suck until the liquid (almost) reaches you and then place the end of the tube lower than the body of liquid you wish to empty.
Appropriate user name. It never works, you *always* get some of the liquid in your mouth, and given what adblue essentially is, I *do not* want that in my mouth…(Also note op comment about siphon prevention device)
Does the tank not have a drain plug at its lowest point?
Gassing Station | Home Mechanics | Top of Page | What's New | My Stuff