john banks

There are three ports on the top of this, previously saw instructions for removing on STi..

Hand now forced to remove it as the valve before it is leaking.

I'll have a look see if I can work it out, meantime any hints welcome, including drilling the filler cap.

Pavlo

The wallis mobile was drill 1mm hole in filler cap, block everything else off, remove all the crap.

Seemed to work.

Paul

scoobyboy

only if you want to vent petrol fumes to atmosphere then wait for that carelessly tossed lighted match hmmm bit late for bonfire night!!!!

Cord

Or, which ever of the 3 pipes is the breather from the tank, tuck into a chasis rail underneath the car somewhere. All the rest of it, in the bin.

Pavlo

The filler cap is baffled, I very much doubt you will be getting much vapour around the baffle and 1mm hole. Old cars have a sizeable vent.

I would block the normal vent, as you want as little fresh air as possible going into the tanks and degrading the fuel (evapouration and osmosis).

The charcoal purge cannister is an emission control device, not specifically a safety feature (although it's a safe way to do it).

Paul

Denmark

iTrader: (2)

If you just take it of without bloking the pipes,it will run extremly rich!!!!!!.

I know course i destroyed 4 brand new plugs


Skassa

Jolly Green Monster

iTrader: (4)

I know it is an older car (96) but I have removed mine, T'd the remaining two pipes together and tucked into the chassis rail where the original vented to.

On the 96 there was three ports on the top of the canister.. one goes to the air intake with a one way valve( therefore now not required), then there are two, one is the tank vent (apparently) and the other I am not sure..

I believe Harvey did the same as I posted something about this on 22b a month or two ago.

No great smell of fumes or anything after a couple of thousand miles and a couple of months.

Simon

tweenierob

Have removed plenty of these....

Two of which had no hole in the filler cap, one of them my own car.. The cap released the pressure when i undone the cap for filling... not a lot of pressure TBH.

I will drill a small hole in the filler cap of my Type R however, purely just to elliminate any pressure (just in case)..

The tank vent pipe comes up with the fuel supply pipe just by the passenger suspension turret/bulkhead, however you can block the vent directly on the pump/gauge sender port... It is the smaller of the three pipes on the port.

Rob

Pavlo

Aaaaaaaah!

I believe I have a broken/repaired hose connector on the charcoal canister. And I have been complaining about rich afr.

Must investigate further.

paul

jgevers

Hi John,

Just remove the pipe from EVAP cannister to inlet manifold (the one with the leaking valve) and block both sides. Fuel vapour will go through the carbon content.

If you want to make absolutely sure that the tank does not get sucked in through vacuum created by the fuel pump, a 1mm hole in the cap will suffice.

By the way your engine is very impressive! Let the Turbo4 and RS4 come and try!

regards,

Job

Jolly Green Monster

iTrader: (4)

Just remembered.. I left the one way valve on mine.. when I vented them to atmosphere..

Also surely a hole in the filler cap will still allow air with moisture in, the same way venting the pipes to atmosphere will?

Can someone expand on the running rich please??

Simon

Pavlo

a 1mm hole will let air in, that's why it's there.

what you don't want is air freely moving through the tank. If you try blowing through a 1mm hole, you will realise that you're not going to get lots of fresh air being able to move in and out of the hole at the same time.

Works fine for Andy Fs car, and it's why we did what we did on David's

Paul

Jolly Green Monster

iTrader: (4)

I see..

Could this be why I am running rich?!

Simon

Tone Loc

iTrader: (1)

So what have people done with the purge control valve (the one that has a pipe to the throttle body and one to the canister? Have you just left this plugged into the loom and blocked of the pipes?

Tony.

Jolly Green Monster

iTrader: (4)

I checked my pipes at lunchtime and neither of them that were connected to the canistor are sucking or blowing...

But I have a manifold leak.. and did nothing with PCV just left it as it was.. perhaps this is where my leaking manifold pressure is???

Jolly Green Monster

iTrader: (4)

But the pipe that goes from pressure solenoid to the one way valve one mine was stupidly left to atmosphere by me!! this was my manifold leak and why it was rich.. other two pipes still seem fine although might consider removing PCV at some point..



Simon

greasemonkey

John B, seeing as you've been playing in this area, can you confirm (or deny) that the grey and black plastic valve in the line from the fuel tank is a one way valve that allows vapour to travel from the fuel tank to the canister but [/b] not [/b] back the other way?

Mine easily lets air pass both ways, so not sure whether it's broken, or whether it's just supposed to be a filter.

john banks

I only delved to the point of replacing it to fix the problem. T-uk started sucking and blowing through it and has the defective item at his disposal so will be able to advise in more detail. When he starts sucking and blowing at the engine breathers I get worried

Jolly Green Monster

iTrader: (4)

Greasemonkey..

I believe that is what it is and is why I have left this valve in place and vented the pipe to atmosphere..

Simon

greasemonkey

Cheers both. Confused now. Also got a case of inexplicable richness and was hoping I might find an explanation here somewhere. Needless to say all the other obvious causes have been ruled out. Tried blocking the vent pipe and if anything the situation's got worse.

Will have to get new one and see if it makes any difference. Any idea how much this component is supposed to cost John? Looks like it shouldn't be more than 75p, but that's not taking the IM factor into account...

[Edited by greasemonkey - 12/5/2003 2:38:41 PM]

john banks

No idea, when I get around to it I will unlikely be buying another.... too much to do and not enough daylight, warmth and time

greasemonkey

Ach, try living somewhere a bit nearer the equator !

Jolly Green Monster

iTrader: (4)

I am now chancing a possible vacuum leak.. again.. found a huge leak yesterday which fixed all my problems I thought..

Fitted my 550s today and lumpy idle like a vacuum leak.. so I now don;t know if it is cause by the 550's or if they have highlighted a problem that was there already..

I might refit my carbon canistor just to eliminate it from the problem.

Simon