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Warm up regulator rebuild spring missing

Discussion in '308/328' started by drrick308, May 25, 2024.

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  1. drrick308

    drrick308 Rookie

    Feb 14, 2012
    31
    Salem, Oregon
    Full Name:
    Dr. Rick
    #1 drrick308, May 25, 2024
    Hello,
    I am in the middle of rebuilding the WUR in my 1980 GTSi. The regulator was rebuilt before I got the car (20 years ago) by "Fuel Injection Corp"
    1. a pain to have to drill out the rivets .
    2. Below is a photo taken from a You Tube video--There is a spring between the bottom and intermediate plates . Image Unavailable, Please Login

    My regulator does not have a spring in this position.

    Question: Since there are several variations of WUR, do some have a spring in this location and some do not?
    The only other difference I could tell is location of the bottom vacuum fitting.

    Car was having cold start issues and idling was off. I have already rebuilt the Fuel Distributor and am setting up to balance the outputs. Cold start valve fixed. Thermotime switch replace.
    Thanks in advance for your input.
    RickP
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,843
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, May 25, 2024
    Last edited: May 25, 2024
    I think the answer to your question is "yes". There are two main types of Ferrari WUR:

    Early Type: K-Jet without Lambda WUR (which is what your model would have regardless of version). This WUR senses the intake manifold vacuum to add/subtract enrichment. Your best reference is Fig 11 on page D13 of the Mondial8/QV WSM (it does not have a spring between the bottom and intermediate plates):
    Image Unavailable, Please Login

    Later Type: K-Jet with Lambda WUR (this is what is used on 1984-85 US 308QV and 1986-89 US 328). This WUR only senses the atmospheric pressure to add/subtract enrichment. I can't recall ever finding a good drawing of this WUR in the F documentation.

    PS Porsche, Volvo, MB, etc. also used a bunch of different WURs so keep that in mind when viewing Youtube if the WUR shown is not specifically identified.
     
  3. drrick308

    drrick308 Rookie

    Feb 14, 2012
    31
    Salem, Oregon
    Full Name:
    Dr. Rick
    #3 drrick308, May 26, 2024
    Steve,
    Appreciate the reply. I have that WSM and saw the diagram and came to the same conclusion. The CIS system, in general, contains many different iterations, and I have spent hours on FC and elsewhere trying to figure this out.
    Now I know why I have never been able to find the damn Lambda sensor in my car............
    The YT video was of a Porsche WUR rebuild...........it was the closet one in configuration to mine that I was able to find.
    As I mentioned, the WUR had been previously rebuilt. "Fuel Injection Corp" must not have removed the rivets to replace the plate-valve. I can't imagine they would rebuild with rivets, but I have been wrong before.
    R
     
  4. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,122
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #4 Rifledriver, May 26, 2024
    I have used Fuel Injection Corp many times. They used to be right down the road from me and I got to know the owner. I never saw any questionable work from them. The problem with WURs is the same with carbs, they get blamed for a lot they are not responsible for then someone takes them apart. I would not be highly confident FIC was the last to lay hands on it.
     

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