[DeTomaso] Techno Question: The Fuel Vapor control system

Dennis Valdez sjcarguy60 at yahoo.com
Fri Mar 24 18:10:44 EDT 2017


When I bought my car a couple of years ago, I was getting some gas smells in my garage.  The car is 98% stock, but had steel braided lines and when I looked for leaks could not see anything.  I ended up replacing all the fuel lines from the tank to the pump all the way to the carburetor and replaced the old canister with a NOS carbon canister from a ford vendor.  (Ford used the same part number on trucks).  
All the smells went away.  I suspect there was a leak "hiding" under the steel braids, as I don't think the new canister would have made that big of a difference, but who knows.
Dennis 

    On Friday, March 24, 2017 2:05 PM, B Hower via DeTomaso <detomaso at server.detomasolist.com> wrote:
 

 
  Question: How do you make sure you don't fill the tank full enough to
  get overflow into the fuel vapor hose?
  Bud #3400 ( Drive it like there is no tomorrow -- for there may not be
  ! )
    __________________________________________________________________

  From: Jack DeRyke via DeTomaso <detomaso at server.detomasolist.com>
  To: cengles at cox.net; mikeldrew at aol.com; asajay at asajay.com
  Cc: detomaso at server.detomasolist.com
  Sent: Friday, March 24, 2017 1:24 PM
  Subject: Re: [DeTomaso] Techno Question: The Fuel Vapor control system
    Most shops say 10 years is about the lifespan for an OEM charcoal
    cannister. The Pantera is 40+ yrs old and the Mangusta, nearly 50. I
    suppose one could solvent-wash an old one to maybe get rid of oil &
    gas-varnish, then heat the cleaned can in an oven you never want to
  use
    for food, to 'activate' the charcoal again. Much less messy is
  finding
    a much later model cannister from a low mileage junker at Pick 'n
  Pull
    that's the right size to fit your bracket. Personally, I run the
    breather hose straight into the bottom of my air cleaner, eliminating
    the charcoal cannister and 10 ft of rubber hose.
    -----Original Message-----
    From: cengles <[1]cengles at cox.net>
    To: mikeldrew <[2]mikeldrew at aol.com>; asa jay <[3]asajay at asajay.com>;
  Jack
    DeRyke <[4]jderyke at aol.com>
    Cc: detomaso <[5]detomaso at server.detomasolist.com>
    Sent: Fri, Mar 24, 2017 6:47 am
    Subject: Re: [DeTomaso] Techno Question: The Fuel Vapor control
  system
    Dear Mike, Asa, Jordan and Jack,
                See  $$$  below.
    On Fri, Mar 24, 2017 at 12:40 AM, [1][6]MikeLDrew at aol.com wrote:
    In a message dated 3/23/17 17 39 16, [2][7]cengles at cox.net writes:
    This is really odd and quite trivial, but here goes.
    While the engine is out, I have been tidying up the engine bay.  For
    some
    reason, I noticed that the hose that connects the gas tank vent to
  the
    factory charcoal canister is braided stainless steel.    It seems to
    be the
    *only* stock factory braided steel hose in the entire engine bay.
    >>>The original stock fuel line was also braided, although it wasn't
    shiny so it's not obvious.  There was a flex hose from the fuel tank
    pickup to the inlet of the fuel pump, then a metal hard line from the
    output of the pump up the front of the motor and across to the
    passenger side, and a short length of hose connecting it to the
    carburetor.
    $$$$$  Hmmm,  it may not be stainless steel.  It is braided and it
  has
    punctured my flesh.  It is not covered with braided fabric.  Perhaps
  it
    has been changed.  I assumed that it was stock.  Perhaps the stock
    vapor hose was braided fabric and it resembles the grayish tarnished
    steel braided line that I have found in the engine bay.
        >                  First dumb techno question:  Does anybody know
    why that
    seemingly lowly hose was worthy of the stainless steel braided hose
    treatment???....to vent simple gas tank vapor??
    >>>It does seem to be a big excessive!
    >                      For the first time I pulled the factory Ford
    Charcoal
    Canister from its stock location.    I suppose that the charcoal is
    kaput.
    >>>Perhaps that's true, perhaps not?  I don't really know what their
    lifespan is purported to be?
    > I inspected the canister.  It looks like it *could* be opened with
    the proper
    tool.    I assume that if one could open it then it might be possible
    to dump
    in another dose of activated charcoal for another four decades.
    >>>It all depends on how concerned you are about the environment.  I
    would suggest that the amount of damage you are doing with your
    camshaft choice and right foot is orders of magnitude greater, and if
    you really were concerned, you would address those issues first. :>)
    $$$$$$  My interest was is in normal engine function over
    environmental concerns.  Thank you for complimenting my camshaft
    choices and driving style..
    >                  Second dumb techno questions regarding the Pantera
    charcoal
    canister:    for those that worship at the stock original altar, does
    anyone
    maintain their charcoal canisters?.....or are they inoperative stock
    adornments of the stock original engine bay?
    >>>Nobody maintains them.  Whether they still function of not is a
    matter of conjecture.  I moved my water bottles so one now lives
  where
    the canister used to be, so my beautifully painted and detailed
    canister and associated bracket is in a box.
    >For those that have modified their Pantera and worship at the
    laissez-faire
    altar, do you completely remove it?    ..add a modern replacement??
    >>>As it has no performance impact, and simply represents a token nod
    to environmental concern, you can either leave it in place or remove
    it; it won't have any measurable effect on performance.  You will
  need
    to decide where and how to run your fuel tank vent hose if you chose
  to
    remove the terminus formed by the canister however.  There is
    certainly no harm and perhaps some minor benefit by leaving it in
    place, but it only really works if the second hose is connected from
    the canister to the underside of the air cleaner, so that fumes are
    extracted through the canister and into the air cleaner, to be burned
    by the combustion processa|..
    $$$$$  That is correct.  With my laissez-faire engines it would be
    hard to plumb it back to the air filter and it would also detract
  from
    a functional tidyness in the engine bay.  I do think that my highly
    valuable stock original charcoal canister and braided hose will soon
    reside in the parts warehouse, labeled from future retrieval in the
    distant future.
                  Back to our normal drivetrain re-assembly and
  installation
    programming........
                                  Warmest regards,  Chuck Engles
    >                        Yes, I know it is pretty arcane.
    >>>We like arcane!
    Mike
  References
    1. mailto:[8]MikeLDrew at aol.com
    2. mailto:[9]cengles at cox.net
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References

  1. mailto:cengles at cox.net
  2. mailto:mikeldrew at aol.com
  3. mailto:asajay at asajay.com
  4. mailto:jderyke at aol.com
  5. mailto:detomaso at server.detomasolist.com
  6. mailto:MikeLDrew at aol.com
  7. mailto:cengles at cox.net
  8. mailto:MikeLDrew at aol.com
  9. mailto:cengles at cox.net
  10. mailto:DeTomaso at server.detomasolist.com
  11. http://server.detomasolist.com/mailman/listinfo/detomaso
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-------------- next part --------------
   When I bought my car a couple of years ago, I was getting some gas
   smells in my garage.  The car is 98% stock, but had steel braided lines
   and when I looked for leaks could not see anything.  I ended up
   replacing all the fuel lines from the tank to the pump all the way to
   the carburetor and replaced the old canister with a NOS carbon canister
   from a ford vendor.  (Ford used the same part number on trucks).
   All the smells went away.  I suspect there was a leak "hiding" under
   the steel braids, as I don't think the new canister would have made
   that big of a difference, but who knows.
   Dennis
   On Friday, March 24, 2017 2:05 PM, B Hower via DeTomaso
   <detomaso at server.detomasolist.com> wrote:
     Question: How do you make sure you don't fill the tank full enough to
     get overflow into the fuel vapor hose?
     Bud #3400 ( Drive it like there is no tomorrow -- for there may not
   be
     ! )
       __________________________________________________________________
     From: Jack DeRyke via DeTomaso <[1]detomaso at server.detomasolist.com>
     To: [2]cengles at cox.net; [3]mikeldrew at aol.com; [4]asajay at asajay.com
     Cc: [5]detomaso at server.detomasolist.com
     Sent: Friday, March 24, 2017 1:24 PM
     Subject: Re: [DeTomaso] Techno Question: The Fuel Vapor control
   system
       Most shops say 10 years is about the lifespan for an OEM charcoal
       cannister. The Pantera is 40+ yrs old and the Mangusta, nearly 50.
   I
       suppose one could solvent-wash an old one to maybe get rid of oil &
       gas-varnish, then heat the cleaned can in an oven you never want to
     use
       for food, to 'activate' the charcoal again. Much less messy is
     finding
       a much later model cannister from a low mileage junker at Pick 'n
     Pull
       that's the right size to fit your bracket. Personally, I run the
       breather hose straight into the bottom of my air cleaner,
   eliminating
       the charcoal cannister and 10 ft of rubber hose.
       -----Original Message-----
       From: cengles <[1][6]cengles at cox.net>
       To: mikeldrew <[2][7]mikeldrew at aol.com>; asa jay
   <[3][8]asajay at asajay.com>;
     Jack
       DeRyke <[4][9]jderyke at aol.com>
       Cc: detomaso <[5][10]detomaso at server.detomasolist.com>
       Sent: Fri, Mar 24, 2017 6:47 am
       Subject: Re: [DeTomaso] Techno Question: The Fuel Vapor control
     system
       Dear Mike, Asa, Jordan and Jack,
                   See  $$$  below.
       On Fri, Mar 24, 2017 at 12:40 AM, [1][6][11]MikeLDrew at aol.com
   wrote:
       In a message dated 3/23/17 17 39 16, [2][7][12]cengles at cox.net
   writes:
       This is really odd and quite trivial, but here goes.
       While the engine is out, I have been tidying up the engine bay.
   For
       some
       reason, I noticed that the hose that connects the gas tank vent to
     the
       factory charcoal canister is braided stainless steel.    It seems
   to
       be the
       *only* stock factory braided steel hose in the entire engine bay.
       >>>The original stock fuel line was also braided, although it
   wasn't
       shiny so it's not obvious.  There was a flex hose from the fuel
   tank
       pickup to the inlet of the fuel pump, then a metal hard line from
   the
       output of the pump up the front of the motor and across to the
       passenger side, and a short length of hose connecting it to the
       carburetor.
       $$$$$  Hmmm,  it may not be stainless steel.  It is braided and it
     has
       punctured my flesh.  It is not covered with braided fabric.
   Perhaps
     it
       has been changed.  I assumed that it was stock.  Perhaps the stock
       vapor hose was braided fabric and it resembles the grayish
   tarnished
       steel braided line that I have found in the engine bay.
           >                  First dumb techno question:  Does anybody
   know
       why that
       seemingly lowly hose was worthy of the stainless steel braided hose
       treatment???....to vent simple gas tank vapor??
       >>>It does seem to be a big excessive!
       >                      For the first time I pulled the factory Ford
       Charcoal
       Canister from its stock location.    I suppose that the charcoal is
       kaput.
       >>>Perhaps that's true, perhaps not?  I don't really know what
   their
       lifespan is purported to be?
       > I inspected the canister.  It looks like it *could* be opened
   with
       the proper
       tool.    I assume that if one could open it then it might be
   possible
       to dump
       in another dose of activated charcoal for another four decades.
       >>>It all depends on how concerned you are about the environment.
   I
       would suggest that the amount of damage you are doing with your
       camshaft choice and right foot is orders of magnitude greater, and
   if
       you really were concerned, you would address those issues first.
   :>)
       $$$$$$  My interest was is in normal engine function over
       environmental concerns.  Thank you for complimenting my camshaft
       choices and driving style..
       >                  Second dumb techno questions regarding the
   Pantera
       charcoal
       canister:    for those that worship at the stock original altar,
   does
       anyone
       maintain their charcoal canisters?.....or are they inoperative
   stock
       adornments of the stock original engine bay?
       >>>Nobody maintains them.  Whether they still function of not is a
       matter of conjecture.  I moved my water bottles so one now lives
     where
       the canister used to be, so my beautifully painted and detailed
       canister and associated bracket is in a box.
       >For those that have modified their Pantera and worship at the
       laissez-faire
       altar, do you completely remove it?    ..add a modern replacement??
       >>>As it has no performance impact, and simply represents a token
   nod
       to environmental concern, you can either leave it in place or
   remove
       it; it won't have any measurable effect on performance.  You will
     need
       to decide where and how to run your fuel tank vent hose if you
   chose
     to
       remove the terminus formed by the canister however.  There is
       certainly no harm and perhaps some minor benefit by leaving it in
       place, but it only really works if the second hose is connected
   from
       the canister to the underside of the air cleaner, so that fumes are
       extracted through the canister and into the air cleaner, to be
   burned
       by the combustion processa|..
       $$$$$  That is correct.  With my laissez-faire engines it would be
       hard to plumb it back to the air filter and it would also detract
     from
       a functional tidyness in the engine bay.  I do think that my highly
       valuable stock original charcoal canister and braided hose will
   soon
       reside in the parts warehouse, labeled from future retrieval in the
       distant future.
                     Back to our normal drivetrain re-assembly and
     installation
       programming........
                                     Warmest regards,  Chuck Engles
       >                        Yes, I know it is pretty arcane.
       >>>We like arcane!
       Mike
     References
       1. mailto:[8][13]MikeLDrew at aol.com
       2. mailto:[9][14]cengles at cox.net
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   References
     1. mailto:[17]cengles at cox.net
     2. mailto:[18]mikeldrew at aol.com
     3. mailto:[19]asajay at asajay.com
     4. mailto:[20]jderyke at aol.com
     5. mailto:[21]detomaso at server.detomasolist.com
     6. mailto:[22]MikeLDrew at aol.com
     7. mailto:[23]cengles at cox.net
     8. mailto:[24]MikeLDrew at aol.com
     9. mailto:[25]cengles at cox.net
     10. mailto:[26]DeTomaso at server.detomasolist.com
     11. [27]http://server.detomasolist.com/mailman/listinfo/detomaso
   _______________________________________________
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   Members who post to this list grant license to the list to forward any
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   or approve the archiving of list messages.

References

   1. mailto:detomaso at server.detomasolist.com
   2. mailto:cengles at cox.net
   3. mailto:mikeldrew at aol.com
   4. mailto:asajay at asajay.com
   5. mailto:detomaso at server.detomasolist.com
   6. mailto:cengles at cox.net
   7. mailto:mikeldrew at aol.com
   8. mailto:asajay at asajay.com
   9. mailto:jderyke at aol.com
  10. mailto:detomaso at server.detomasolist.com
  11. mailto:MikeLDrew at aol.com
  12. mailto:cengles at cox.net
  13. mailto:MikeLDrew at aol.com
  14. mailto:cengles at cox.net
  15. mailto:DeTomaso at server.detomasolist.com
  16. http://server.detomasolist.com/mailman/listinfo/detomaso
  17. mailto:cengles at cox.net
  18. mailto:mikeldrew at aol.com
  19. mailto:asajay at asajay.com
  20. mailto:jderyke at aol.com
  21. mailto:detomaso at server.detomasolist.com
  22. mailto:MikeLDrew at aol.com
  23. mailto:cengles at cox.net
  24. mailto:MikeLDrew at aol.com
  25. mailto:cengles at cox.net
  26. mailto:DeTomaso at server.detomasolist.com
  27. http://server.detomasolist.com/mailman/listinfo/detomaso
  28. mailto:DeTomaso at server.detomasolist.com
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