Doubts about venting

[RuiD]

Hi,

I've just read about venting and I'll give it a try. However I have a doubt. Without venting when I fill it up the pointer always points to full tank. If what people say it's true (about not really getting the tank completely full) than shouldn't the pointer stop a bit before full tank? I've read about 25% less, but I guess that's exagerating

I also have a Picasso and when I fill it up and it stops at full tank, in fact the gas meter indicates it's close to full tank, but it's not really full. This should also happen to Ibiza's gas meter, don't you think?

RuiD

 

[muddyboots]

If you vent while filling, the pointer will just stay at full for longer

 

[justlivyalife]

My fuel guage can show full for anything up to 150 miles after refilling with venting. Shows full for about 100 to 120 if I don't vent

 

[NickVW]

Whats venting? (newbie!)

 

[BJM]

Its a method of filling the expansion space in your fuel tank - the search button is your friend!

 

[rashcupra]

the gauge is a very rough estimate as stated abouve the fuel level gauge will just stay at the top for longer

(mine certainly doesnt stay full for long even when venting )

 

[TimBarratt]

But if you fill the expansion space, wont any vapours realised by the fuel cause the preasure to build up in the fuel tank. Could this cause any problems?

 

[rashcupra]

petrol exspands alot! less than diesel i do belive so us petrol heads are ok and it would need to reach very high temperatures to cause a major problem!

 

[Nath.]

But if you fill the expansion space, wont any vapours realised by the fuel cause the preasure to build up in the fuel tank. Could this cause any problems?

don't vent and leave the car sat in the boiling sun all weekend or you may have a petrol puddle under your car

only vent if you intend to drive some miles that day

last time I vented mine the pump started clicking at £28 and after 3 vents I was up to £36 and stopped cos I wasn't sure I had enough cash in my wallet to cover it

 

[Mr Max]

petrol exspands alot! less than diesel i do belive so us petrol heads are ok

other way round my friend, keep taking those happy pills!

 

[rashcupra]

I knew it was 1 or the other

mine never stays full anyway

 

[BJM]

I filled my tank from empty yesterday and using the vent method of holding the valve in whilst filling i maaged to squeeze £50 of diesel in - 53.25 litres! Done around 100 miles on that day and no sign of the needle moving yet!

Venting is great, especially if going on a long journey, saves stopping every 400 miles, I can get 600 out a vented tank, hopefully as it runs in I'll get the magic 700 - though not heard of that in a while - anyone managed it recently?

 

[rashcupra]

700 miles easy! do it every tank i was pleased with my 230miles from a vented tank!

 

[mattcogg1981]

I vent almost all the time now got about 40 litres in the other day and did about 70 miles till it started moving!

 

[Mikey_H]

lol 400 miles per tank most i have ever done on 1 tank is about 312 and thats vented lol i'm trying to train my foot not to push so hard lol

 

[justlivyalife]

700 miles to the tank! I can only get 600 at the max hehe .

 

[RuiD]

Thanks guys for your comments.

 

[Nath.]

just thought I'd add to this one

vented mine yesterday, the tank was on exactly half, vented as I filled and got £30 in the tank

drove from Southampton to Leicester and back (260 miles) and the tank is now showing exactly half again, the needle didn't move off of full for about 110 miles

average mpg showed as 37.7 and I was on the cruise all the way and kept to about 75 mph which is 3k revs

£30 @ 94.9 per liter and I did 260 miles this works out to be 37.4 so my fuel computer is pretty good I think

I'm well happy as I don't normally drive it very far