Carb keeps flooding.....

Discussion in 'Technical' started by NJShoreMav73, Aug 19, 2009.

  1. NJShoreMav73

    NJShoreMav73 Member

    Joined:
    Oct 31, 2004
    Messages:
    179
    Likes Received:
    0
    Trophy Points:
    43
    Location:
    Central, NJ
    Vehicle:
    73 Maverick- 2 Door, LDO Trim, 302, Bucket Seats, Automatic on the floor.
    I have a 6 cylinder in my 70 Grabber.

    It was running perfect and then last week it started to give me problems. Cold start is perfect and it runs great!!! I drive it around and it still runs great.

    After I shut it off and let it sit for a little bit I try to start it and its flooded. I can get it running by holding the pedal to the floor, and then it runs like crap. Once it starts to idle (barely) it will run rough, gas will spit out of the bottom of the carb and it stalls.

    I had it rebuilt by a reputable shop, installed it and it ran great....then after driving it for an hour it did the same thing again.

    What can it be? I'm trying to avoid swapping my 302 from my '73 in it since its like 100 degrees out.

    Anyone have this problem? Could the carb just be bad?
     
    NJShoreMav73, Aug 19, 2009
    #1
  2. justin has a 74

    justin has a 74 Maverick bandit official

    Joined:
    Sep 18, 2008
    Messages:
    3,758
    Likes Received:
    9
    Trophy Points:
    112
    Location:
    kentucky
    Vehicle:
    74 maverick /71 grabber /72 maverick
    turn down the idler screw... its just running to rich probably it gets hot out these days
     
    justin has a 74, Aug 19, 2009
    #2
  3. chirt

    chirt Carlos Hirt

    Joined:
    Oct 1, 2007
    Messages:
    1,098
    Likes Received:
    26
    Trophy Points:
    183
    Location:
    Massachusetts
    Vehicle:
    1971 Maverick
    humm, I don't know much about carbs but sounds to me like the float might be set too high or the valve on the inlet tube where the float hits Don't know how it's called" is not sealing good:huh:
     
    chirt, Aug 19, 2009
    #3
  4. NJShoreMav73

    NJShoreMav73 Member

    Joined:
    Oct 31, 2004
    Messages:
    179
    Likes Received:
    0
    Trophy Points:
    43
    Location:
    Central, NJ
    Vehicle:
    73 Maverick- 2 Door, LDO Trim, 302, Bucket Seats, Automatic on the floor.
    I just had a thought......

    Could the fuel pump be bad? Maybe it's pumping too much fuel and causing and causing too much fuel pushed into the carb?
     
    NJShoreMav73, Aug 19, 2009
    #4
  5. Mavman72

    Mavman72 Gone backwards but lookin' forward

    Joined:
    Apr 24, 2007
    Messages:
    6,759
    Likes Received:
    272
    Trophy Points:
    273
    Location:
    Buffalo N.Y.
    Vehicle:
    1972 Maverick 2 door.Original V-8 3 spd std shift.Also a 72 one owner Sprint sporting a 351 Windsor
    You have a float/needle and seat problem or a percolation problem.Fuel gets hot in float bowl and starts to expand and leak into intake. This will cause the hard start/flooding condition you are experiencing.
     
    Mavman72, Aug 19, 2009
    #5
  6. Mavman72

    Mavman72 Gone backwards but lookin' forward

    Joined:
    Apr 24, 2007
    Messages:
    6,759
    Likes Received:
    272
    Trophy Points:
    273
    Location:
    Buffalo N.Y.
    Vehicle:
    1972 Maverick 2 door.Original V-8 3 spd std shift.Also a 72 one owner Sprint sporting a 351 Windsor
    The only thing I can think of as far ar the fuel spitting out the bottom??...of the carb.
    Cold fuel hitting hot fuel in the float bowl.Toss an ice cube in boiling hot water...it will literally explode from the temp variation.Cold fuel will absorbe heat faster than hot fuel will cool off...soo on that theory.The fuel is expanding rapidly in the float bowl causing it to pump itself out the boosters.Or I could be so far off base that you think I am nuts...
    Does your choke work properly???
     
    Last edited: Aug 19, 2009
    Mavman72, Aug 19, 2009
    #6
  7. Mavman72

    Mavman72 Gone backwards but lookin' forward

    Joined:
    Apr 24, 2007
    Messages:
    6,759
    Likes Received:
    272
    Trophy Points:
    273
    Location:
    Buffalo N.Y.
    Vehicle:
    1972 Maverick 2 door.Original V-8 3 spd std shift.Also a 72 one owner Sprint sporting a 351 Windsor
    Sorry I am on a tangent here...Fuel is spitting out the bottom of the carb?
    Spitting out,into the throttle bores??
    Or is it spitting out onto the intake from between the carb and intake gasket???
     
    Mavman72, Aug 19, 2009
    #7
  8. shaunh82

    shaunh82 Member

    Joined:
    Apr 3, 2004
    Messages:
    934
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    Washington NJ
    Vehicle:
    71 Pinto sportsroof
    Steve, I think Next weekend is clear to swap that engine in, we need to find out if the C4 will fit your trans tunnel with out modification though
     
    shaunh82, Aug 20, 2009
    #8
  9. 71gold

    71gold Frank Cooper Supporting Member

    Joined:
    Apr 9, 2002
    Messages:
    26,464
    Likes Received:
    2,841
    Trophy Points:
    978
    Garage:
    1
    Location:
    MACON,GA.
    Vehicle:
    '73 Grabber
    C4 into a '70...:thumbs2:...crossmember and driveshaft will work also...
     
    71gold, Aug 20, 2009
    #9
  10. NJShoreMav73

    NJShoreMav73 Member

    Joined:
    Oct 31, 2004
    Messages:
    179
    Likes Received:
    0
    Trophy Points:
    43
    Location:
    Central, NJ
    Vehicle:
    73 Maverick- 2 Door, LDO Trim, 302, Bucket Seats, Automatic on the floor.
    You're a bad influence Shaun!
     
    NJShoreMav73, Aug 20, 2009
    #10
  11. shaunh82

    shaunh82 Member

    Joined:
    Apr 3, 2004
    Messages:
    934
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    Washington NJ
    Vehicle:
    71 Pinto sportsroof
    nah, I broke my throttle cable and that was reason enough for me to swap in the 5.0

    Thanks Frank!

    FFS
     
    shaunh82, Aug 20, 2009
    #11

Share This Page