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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, Carburetor Questions in Past Cadillac Vehicle Discussion; Good people, I have recently installed a reman carb on my 89 Bro with the 307. The car runs well ...
  1. #1
    GeneLaw1 is offline Cadillac Owners Fanatic
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    Carburetor Questions

    Good people,

    I have recently installed a reman carb on my 89 Bro with the 307. The car runs well but when I kick the choke off it a putters and dies. Any ideas? I've been working with adjusting what I believe to be the choke plate, a black circular thing in the side....also what I believed to be an idle speed screw in the front. Either way, I just need some assistance. I was able to drive last night with no problem really other than the engine light flickering in the interstate.....this morning, I started let it run, and tap the gas and it sputtered off. Haven't been able to get it started again, haven't tried too much though.

    Appreciate any advice....thanks!

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    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
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    Re: Carburetor Questions

    Check out this video, and the other vids by this guy. They will probably help you understand what the adjustments do.

    http://www.youtube.com/watch?v=yX_hCujFQ_I
    Benzilla and Benzilla like this.

  4. #3
    GeneLaw1 is offline Cadillac Owners Fanatic
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    Re: Carburetor Questions

    Quote Originally Posted by jayoldschool View Post
    Check out this video, and the other vids by this guy. They will probably help you understand what the adjustments do.

    http://www.youtube.com/watch?v=yX_hCujFQ_I
    So Jay after watching a couple of these, I wanted your opinion. Is it usual to have to adjust the mixture screws and idle speed screws after putting on a new carb?

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    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
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    Re: Carburetor Questions

    Yes, the carb is going to need to be set up when putting it on. A tach and a vacuum gauge are essential. The benefits will include smooth operation, more power, and better fuel consumption.

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    GeneLaw1 is offline Cadillac Owners Fanatic
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    Re: Carburetor Questions

    Quote Originally Posted by jayoldschool View Post
    Yes, the carb is going to need to be set up when putting it on. A tach and a vacuum gauge are essential. The benefits will include smooth operation, more power, and better fuel consumption.
    O boy, I have none of that stuff, nor do I really know how to use them...guess it may be time to find a shop, I at least want to get it to where I can drive it to one. At hot idle sometimes it barely even runs. smh

  7. #6
    1980coupe's Avatar
    1980coupe is offline Cadillac Owners Connoisseur
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    Re: Carburetor Questions

    When I got my new carb, all I did was slap it on and reconnected everything and it ran fine. I made no adjustments
    whatsoever and ran fine. Still runs good, even though I had the caddy sitting since October of last year..
    Good luck with your adjustments.
    Good to hear from you and that you're doing fine after what happen...

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    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
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    Re: Carburetor Questions

    Gene, do you have a Harbor Freight near you?

  9. #8
    GeneLaw1 is offline Cadillac Owners Fanatic
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    Re: Carburetor Questions

    Quote Originally Posted by 1980coupe View Post
    When I got my new carb, all I did was slap it on and reconnected everything and it ran fine. I made no adjustments
    whatsoever and ran fine. Still runs good, even though I had the caddy sitting since October of last year..
    Good luck with your adjustments.
    Good to hear from you and that you're doing fine after what happen...
    O yea man, Didnt miss a beat. But I had to get that Caddy out of there, it was running pretty bad on the old one...but it was running better than it is with the new one...ugh!

    ----------

    Quote Originally Posted by jayoldschool View Post
    Gene, do you have a Harbor Freight near you?
    Harbor Freight Tools? If so, then yes there are a number of those around Atlanta.

    ----------

    Quote Originally Posted by jayoldschool View Post
    Gene, do you have a Harbor Freight near you?
    Harbor Freight Tools? If so, then yes there are a number of those around Atlanta.

  10. #9
    silverfox103's Avatar
    silverfox103 is offline Cadillac Owners Fanatic
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    Re: Carburetor Questions

    I've replaced a number of carburators with rebuilt units in my 64 years. I have never had to adjust them; there ready to go out of the box.

    Tom C.

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    jayoldschool is offline GM RWD V8 addict
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    Re: Carburetor Questions

    You never bothered to set idle speed, nor mixture? A carb will run (usually) out of the box, but it will be better if it is at least checked.

  12. #11
    silverfox103's Avatar
    silverfox103 is offline Cadillac Owners Fanatic
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    Re: Carburetor Questions

    Quote Originally Posted by jayoldschool View Post
    You never bothered to set idle speed, nor mixture? A carb will run (usually) out of the box, but it will be better if it is at least checked.
    I have not, if I remember correctly, there was always a note with the instructions, that no adjustments were necessary as they are factory set from the rebuilder. Now with everything FI, I can't remember the last time I bought one. It may be 25 years ago.

    Tom

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    GeneLaw1 is offline Cadillac Owners Fanatic
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    Maybe something happened during the installation of mine....vacuum leak perhaps?

  14. #13
    cadillac_al is offline Cadillac Owners Connoisseur
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    Re: Carburetor Questions

    Did you play with the adjustments showed in the video? If that one didn't do the trick I'll bet there are a lot of other videos explaining it around the net. It sounds like a choke adjustment is all it needs.

  15. #14
    GeneLaw1 is offline Cadillac Owners Fanatic
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    Quote Originally Posted by cadillac_al View Post
    Did you play with the adjustments showed in the video? If that one didn't do the trick I'll bet there are a lot of other videos explaining it around the net. It sounds like a choke adjustment is all it needs.
    The idle screws I did play around with. I was attempting to play with the mixture screws but I didn't seem to have the proper tool to turn them.

  16. #15
    csbuckn is offline Cadillac Owners Master
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    Re: Carburetor Questions

    Can you see the fuel coming out the jets in a good streem?

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