• Guest would you be interested in CUPRA or SEAT valve caps? let us know in the poll

  • Welcome to our new sponsor Lecatona, a brand dedicated to enhancing performance for VAG group sports cars, including SEAT, Audi, Volkswagen and Škoda. Specializing in High Pressure Fuel Pump (HPFP) upgrades.

Venting.

AndyVTR

Full Member
Mar 19, 2002
1,342
0
Now usually I just fill up the once on a Sunday night and do my 600 mile commute. The pump usually times out before I manage to vent it.

This weekend I fancied a bit of drive so filled her up on Saturday. Topped it up on Sunday night and vented it quite a few times. I now realise it's better to fill it right up the neck then vent it back down again. I managed to get 18L in after doing 62 miles (37.6mpg oops).

Got home last night showing 120 on trip and 605 on range, 55mpg(1).

I've now done 180miles and the needle has only just left the top marker. It normally moves off that at 80miles.

Well impressed.
 

muddyboots

Still hanging around
Oct 16, 2002
5,739
1
I used to vent my Ibiza and fill right to the brim, it would do 200-210 miles before the needle moved.

Meant an extra couple of days between fillups !
 

AndyVTR

Full Member
Mar 19, 2002
1,342
0
I can't usually do it thanks to Tesco's pumps timing out. Not sure I'd want to every week though. Although it might mean I can do my 600 miles at a faster pace.
 

muddyboots

Still hanging around
Oct 16, 2002
5,739
1
Hold the venting nipple with the tip of the fuel nozzle, and fill carefully until it reaches the top. Won't cut out that way ;)
 

AndyVTR

Full Member
Mar 19, 2002
1,342
0
It cuts out due to being on too long not because of the fuel on the pump.

Not sure on the ventectomy, would it be safe in this country?

Even if I did either of those would I be able to fill it full blast and have the same effect?
 

Wheely

Full Member
Nov 19, 2003
176
0
The Sou' West
Visit site
Hi,

Although a fellow diesel driver, i am also a keen biker (motorcycle) - and a member of several bike related forums.

We have had numerous accidents, including all to many fatalaties as a result of diesel owners - venting / overfilling / their vehicles. As a result an ongoing awareness campaign was launched to provide diesel owners with an understanding of the issues and the hurt and distress to the loved ones of innocent people that have pointlessly lost their lives.

Now the biggest issue by far are commercial vehicles, but anyone who is squeezing the last drip of fuel into their tanks is not doing this any favours - and you may not realise the potential hazard you could be creating by this.

Not looking for a debate, but would like to share this awareness with you all before you try and see if you can go an extra day between refills.

http://darrenbourne.co.uk/killspills/

Cheers

MARK
 

muddyboots

Still hanging around
Oct 16, 2002
5,739
1
Aye, well understand the problem - although I fill to the brim, it's never to the extent where it comes out. My conscience is clear :)
 

Wheely

Full Member
Nov 19, 2003
176
0
The Sou' West
Visit site
prc said:
Same here. I top it up all the time, just to save me from having to make 3 trips to the pump per week.


So my question here is, and its a question because I dont know the answer, (like how the fuel/tank is vented etc) but if ya fill her right up to the brim, leave the garage and go round an everlasting left-hand bend (eg slip road), what is stopping that brimmed fuel from entering any vent and spilling onto the road ?

Unfortunately (for bikers) its the diesel spilt on corners thats the issue. I've never seen any coming out of cars - like, for example, when you see it pour out of lorries and coaches going round bends. But it would be good to know what keeps our cars diesel in the tank (+ fill pipe) in similar situations.

Cheers

MARK
 

muddyboots

Still hanging around
Oct 16, 2002
5,739
1
Wheely said:
So my question here is, and its a question because I dont know the answer, (like how the fuel/tank is vented etc) but if ya fill her right up to the brim, leave the garage and go round an everlasting left-hand bend (eg slip road), what is stopping that brimmed fuel from entering any vent and spilling onto the road ?

Unfortunately (for bikers) its the diesel spilt on corners thats the issue. I've never seen any coming out of cars - like, for example, when you see it pour out of lorries and coaches going round bends. But it would be good to know what keeps our cars diesel in the tank (+ fill pipe) in similar situations.

Cheers

MARK
I'm not sure exactly how it's sealed, but you'd know if any had leaked out because it would be visible under the car (plus you'd smell it). Diesel doesn't evaporate away like petrol so any leaks would be visible for ages, I've had thorough looks under the car whenever it's been up on ramps and never seen any.

I have however been on the receiving end of a bus coming round a bend at speed with no fuel filler cap on, my car and windscreen being covered in the stuff gushing outwards :(
My route to work is very heavily used by quarry trucks, some days you can smell the diesel on the road through the vents. And this is biker country too (near Matlock Bath)!
 

craig-pd130

Full Member
May 7, 2003
353
0
Manchester
Visit site
As another biker & sooty driver :), the issue is lost filler caps.

Not usually on the bigger fleet trucks but on the clapped out 2-ton flatbeds used by Bodgeit & Scarper Builders etc.

You'd be horrified by how many of these seem to think that a bit of old rag stuffed in the filler neck is an effective cap.
 

cheshire cat

Full Member
Dec 28, 2002
1,813
1
cheshire
Visit site
Wheely said:
Hi,

Although a fellow diesel driver, i am also a keen biker (motorcycle) - and a member of several bike related forums.

We have had numerous accidents, including all to many fatalaties as a result of diesel owners - venting / overfilling / their vehicles. As a result an ongoing awareness campaign was launched to provide diesel owners with an understanding of the issues and the hurt and distress to the loved ones of innocent people that have pointlessly lost their lives.

Now the biggest issue by far are commercial vehicles, but anyone who is squeezing the last drip of fuel into their tanks is not doing this any favours - and you may not realise the potential hazard you could be creating by this.

Not looking for a debate, but would like to share this awareness with you all before you try and see if you can go an extra day between refills.

http://darrenbourne.co.uk/killspills/

Cheers

MARK
as an old biker I am fully aware of ALL road hazards, believe me if there were ANY chance of loosing fuel I would not have done this, no leaks in over 2.5 years :)
 

AndyVTR

Full Member
Mar 19, 2002
1,342
0
I always found it strange when people said it would overflow.

The vent lets air out trapped in your tank but as soon as you drive away you use fuel and the vent is shut and still within the filler cap. Only thing I can see is the little tube that drips any overflow into your wheel arch.
 

AndyVTR

Full Member
Mar 19, 2002
1,342
0
Filled up holding the vent open this weekend and got 60L in. Trip was on 664 so only managed 50mpg. Extra fuel means I don't have to be as careful.

If I can get 630's without venting I reckon I could easily manage 700 miles on a tank.
 

stan_blade

Guest
Hi AndyVTR

I have always filled up my TDI cupra to the first or second clicks when at the pump. but per tank only manage an average 540 mile range though. My daily commute is about a 40 mile round trip which is mainly a fast dual carrageway. I usually cruise at about 85 mph(obviously a private A road). Do you think my driving style is affecting this. Is my commute not getting the TDi engine warm enough?
If you are averaging 600 miles per tank I want to know why I cant get that...
:-(
 

AndyVTR

Full Member
Mar 19, 2002
1,342
0
I'm sure on a 20 mile trip it gets plenty warm enough. It's probably your style and roads. Mine is majority of motorways with cruise on at 67mph. I hardly ever use full throttle either. 540 sounds normal to me from what I've seen quoted on here.
 

sssstew

Editing your spelling
stan_blade said:
Hi AndyVTR

I have always filled up my TDI cupra to the first or second clicks when at the pump. but per tank only manage an average 540 mile range though. My daily commute is about a 40 mile round trip which is mainly a fast dual carrageway. I usually cruise at about 85 mph(obviously a private A road). Do you think my driving style is affecting this. Is my commute not getting the TDi engine warm enough?
If you are averaging 600 miles per tank I want to know why I cant get that...
:-(

and your only doing it to the first or 2nd click so theres loads more to be put in yet.
 

TornadoRed

Full Member
Aug 22, 2004
184
0
Saint Paul, Minnesota, USA
If there was any spillage while driving from an over-filled tank, you'd see evidence of it on the side of the car and inside the filler door.

I've been venting, filling within a few inches of the top, for a long time. And I'm sure I've never had any spillage.