Fuel from Charcoal canister :s anyone shed any light

1. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

   #1 8th November 2009, 17:48

   Some of you may no that a few weeks ago i had trouble with my car missing and fuel coming from the drivers arch
   
   The happened about 2 weeks after fitting a larger Fuel pressure regualtor - the time gap made me think it wasnt connected. But i changed it and it ran fine
   
   A few weeks ago i put it back on and tonight its happened again, but as soon as i replaced it with standard it was fine :s
   
   Can anyone tell me how fuel could get to the arch? am i right with it being the charcoal canister? just any info for me?
2. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

   #2 8th November 2009, 17:56

   it's basically a fuel tank breather iirc, routing the fuel vapours back into the inlet after going through charcol.
   
   The ECU i think controls the opening and closing of this valve
3. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

   #3 8th November 2009, 18:01

   Ok cheers, is it in anyway connected or linked to the fpr? how did fuel get into it?
4. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

   #4 8th November 2009, 18:05

   it's linked to your fuel tank and the fpr under the rear bench - as it's the breather for it
5. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

   #5 8th November 2009, 18:16

   is there any realease in it to cause fuel to come through the arch or might i have split a pipe?
6. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

   #6 8th November 2009, 18:34

   Quote:

   Originally Posted by Forrest72 is there any realease in it to cause fuel to come through the arch or might i have split a pipe?

   Could have a split pipe - how do you know there's fuel in the arch? Can you smell it?
7. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

   #7 8th November 2009, 18:38

   the pipe runs from the top of the tank along the driverside sill and upto the canister. It could be split at the join on the canister
8. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

   #8 8th November 2009, 18:42

   basically the engine started to stutter and then when i got out it was litterally pouring fuel out of the arch nearest the door - pouring :s swapped the fpr over and it was fine :s
   
   will take the wing off tomoz and inspect
9. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

   #9 8th November 2009, 18:45

   what sort of fpr was it? a replacement under the bench? or a cut into the fuel line up front job?
10. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

    #10 8th November 2009, 18:58

    under the bench 4.0 bar, standard was a 3.5bar
11. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

    #11 8th November 2009, 20:32

    does anyone know if i can access it without taking the entire arch off?
12. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

    #12 8th November 2009, 20:45

    ive just found this info:
    
    The tank has to have the space for the vapors to collect so that they can then be vented to the charcoal canister. A purge valve is used to control the vapor flow into the engine. The purge valve is operated by engine vacuum. One common problem with this system is that the purge valve goes bad and engine vacuum draws fuel directly into the intake system. This enriches the fuel mixture and will foul the spark plugs. Most charcoal canisters have a filter that should be replaced periodically. This system should be checked when fuel mileage drops.
    
    
    
    so looks like the purge valve has gone bad :s
13. nickwillyhams Infrequent Poster Joined: Feb 2009 Stoke-on-Trent Posts: 247 2000 16v

    #13 8th November 2009, 20:51

    Hmmm bet mines never been cleaned can it be removed then, for cleaning obv??
14. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

    #14 9th November 2009, 16:40

    how is the fuel pressure regulator linked to the charcoal canister?
15. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #15 9th November 2009, 16:44

    via a tube
16. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

    #16 9th November 2009, 16:55

    is it a direct link or are there other pipes connected to that pipe?
17. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #17 9th November 2009, 16:57

    direct link iirc - poke your head under the rear bench and have a look.
    
    I'll see what I can find on the Citroen parts diag.
18. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #18 9th November 2009, 17:02

    Got the Citroen Parts picture to show you.
    
    just uploading now
19. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #19 9th November 2009, 17:12

    
    
20. Forrest72 Regular Poster Joined: Apr 2008 Leicestershire Posts: 422 106 1.1 (Green Machine), £90 106 1.1 (Track Car)

    #20 10th November 2009, 23:25

    cheers mate, can i just remove it and bung up each end?