20r carb ?'s

Discussion in 'Engine/Drivetrain' started by burnzya, May 25, 2009.

  1. burnzya

    burnzya Grand Toyotaholic

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    the 79 i just bought has a little issue. the previous owner rerouted all the vacuum lines using a really good diagram, and they all seem good. the truck starts right up but after idling maybe 15-20 seconds it starts to cut out and die. by rapidly pumping the pedal it stays running. also when rapidly pumping it it sounds like it wants to die then it picks up. any ideas?

    i have a weber 32/36 here i plan on putting on, but i want to drive it home before i do the swap. thanks in advance!
     
  2. Paz

    Paz Member

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    im thinking maybe the gas filter
     
  3. burnzya

    burnzya Grand Toyotaholic

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    guess i should have added, its got new

    rotor & cap
    plugs
    wires
    fuel filter
    several oem sensors related to vacuum system
     
  4. burnzya

    burnzya Grand Toyotaholic

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    is the weber a direct bolt on to the stock manifold, or does it need an adapter? i checked www.redlineweber.com and can't find a part number for an adapter.
     
  5. Paz

    Paz Member

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    wow almost the complete system that sparx up.....mmmm maybe the fuel pump or the fuel pump cables.....ive been hearing about a lot of ppl that ther cars wouldnt start and it was that the positive was loose and wouldnt make contact....sumthin that ppl have mistakinly wasted money on buying a new pump wen it was just simply th connection....with an integra i had, it started dying out on me, at first after long periods of time, and then it went shortening until it got to the point i couldnt at half way down the block....called the mechanic and found out it was the distributor....it was going bad so once it started heating up it would shut off
     
  6. burnzya

    burnzya Grand Toyotaholic

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    i've heard a lot of civic/integra owners having problems with their dizzies. i'm wondering if its flooding, but it starts sooooo good. he said it ran well before he re routed the vac lines.....
     
  7. Paz

    Paz Member

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    it cant be flooded....other wise it wouldnt sustain wen u pump the gas rapidly.....it would die quicker....wow this is a hard 1
     
  8. ShoNuff

    ShoNuff Toyotaholic

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    there is a AA battery sized thing on the pass side of the carb behind the choke.


    should have a hot w/key on wire to it.


    test it with a jumper it should "click" when power is applied.




    idle cut solinoid



    if its bad you will get the same symptom. most times i find the ground is bad, so i run a new dedicated one.
     
  9. burnzya

    burnzya Grand Toyotaholic

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    :clapping::clapping: man i was thinking you were still camping...... glad you came on tonight!
     
  10. ShoNuff

    ShoNuff Toyotaholic

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    ya came back a day early, 6 days with out running water is a long time.


    especially after field changing 2 birfields...




    not gonna hijack, but new thread tomorrow or something after i make a vid.





    and the adapter that you get for a 22r (2 piece) weber conversion should have holes for the 20r as well. they would be the smaller bolt pattern on the bottom plate.
     
  11. Predracer

    Predracer Toyotaholic

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    Mine came with everything and bolted right up on my 20r
     
  12. burnzya

    burnzya Grand Toyotaholic

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    the weber i got was pulled from a d-50 in the boneyard so i only got the carb. but for $20 i was happy.
     
  13. yankeetaco72

    yankeetaco72 Veteran

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    Ok help me out here I just got that 20r for $100... I dont have a carb. I'm a newbie when it comes to this but which is the one that will make my 20r scream?:shrug:
     
  14. the_general626

    the_general626 Grand Toyotaholic

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    weber or dual side drafts
     
  15. burnzya

    burnzya Grand Toyotaholic

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    the weber 32/36, but not sure if its legal in ca.
     
  16. ShoNuff

    ShoNuff Toyotaholic

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  17. burnzya

    burnzya Grand Toyotaholic

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    i'm thinkin about fabbing up a low profile one.
     
  18. lownloud

    lownloud Toyotaholic

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  19. ShoNuff

    ShoNuff Toyotaholic

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    ya thats the part i was looking for, it only cost $29 from amazon last year :shrug:

    now they want $80 for it:eek:



    i have seen people mod the intake to bolt a weber on directly, but not for the faint of heart.
     
  20. standardbyker88

    standardbyker88 Grand Toyotaholic

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    for that stock carb, it could be that one side isnt spraying fuel. try looking down it. my 78 did that when i bought it. i tie wired the choke shut. half the fuel, half the fuel. ran that way but had like half of nothing for power. haha. got it home. barely. but that might be something to check. there are 2 common webers, the 32/36 which is more mild and the 38/38 which is more for a modified setup. both work well ive heard, i wish i had a 38/38 now. oh well.

    and if you want to make a nice improvement when you do the carb adapter, cut out the bar between the 2 holes the stock carb lined up to. i have pictures if that doesnt make sence. i did it down the road on a ported 77 non-egr manifold and noticed a nice boost in throttle responce and mid range. im ready to cut off the choke horn now, and rejet the carb. and make a double filter stack to help get some air into that carb.
     

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