Embarrassing stalls

Discussion in 'Technical' started by scooper77515, Nov 1, 2005.

  1. scooper77515

    scooper77515 No current projects.

    Joined:
    Jun 30, 2004
    Messages:
    14,672
    Likes Received:
    73
    Trophy Points:
    233
    Location:
    Issaquah/Grand Coulee, WA
    Vehicle:
    Fresh out of Mavericks
    My car ran fine (before I took the engine apart to install new heads, headers, and cut the towers). But, it would stall at the racetrack right at the starting line, just after good long burnouts.

    It also ran a little lean.

    I bought the Edelbrock Calibration kit recently, with the header drop bracket and all that jazz for the head swap. I should have it all running again in a couple days. If it continues to stall after burnouts, am I not getting enough fuel to the carb?

    I have edelbrock's mechanical fuel pump with all new rubber fuel hoses, stock metal lines to the tank. I am thinking I might need an electric pump back near the tank?

    It is really embarrassing to pull off a good smoky one, then have it stall at the line 2 or three times. I seem to have to rev it a while then sneak up to the line, or it will keep stalling.
     
  2. Rick Book

    Rick Book Member

    Joined:
    Mar 9, 2002
    Messages:
    5,744
    Likes Received:
    13
    Trophy Points:
    197
    Location:
    Thailand
    Vehicle:
    Missing my old '70 Maverick
    Your carb is probably actually 'loading up' with fuel.

    Most carb guys push the clutch in (or put the tranny in neutral) and rev the engine a few times to 'clear it out'.

    It sounds like you're doing that now, but maybe not revving it as much as you need to.

    maybe. ;)
     
    Last edited: Nov 1, 2005
  3. maverikrick

    maverikrick Member

    Joined:
    May 22, 2005
    Messages:
    298
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Nogales, AZ
    Vehicle:
    '74 2dr LDO V8 project
    Talk nice to it.

    It just wants a little begging at the line. Please, Please, Please don't embarass me!!!! I'll only give you Premium, I promise!!. If you can actually get a microphone at the line I think your problem will be solved.:clap:
     
  4. scooper77515

    scooper77515 No current projects.

    Joined:
    Jun 30, 2004
    Messages:
    14,672
    Likes Received:
    73
    Trophy Points:
    233
    Location:
    Issaquah/Grand Coulee, WA
    Vehicle:
    Fresh out of Mavericks
    "loading up" as in "flooding"? I was thinking the exact opposite. But that is what I do, Neutral, and rev it a few times until it wants to run on it's own. Then creep up to the line.

    I always wondered if, since it was running so poorly, if maybe the fuel flow is not optimum and I am not making passes as good as I should. I think I will stop the burnouts, see if I can go around the water, rather than through it, and see if it performs better. I have lots of rubber (BFG-245/60r15) and they are worn down to "wear bars" so they are almost slicks...lots of rubber contacting the road. It should grip just fine without "heating them up".

    There are also a few times, possibly related, where I will hang a left out of the gas station and give it a good, but safe, acceleration and by the time I get 1/4 mile up the road holding the gears until 4500, it starts to miss and sputter, like it is out of gas. When I slow back down, and take it easy for a few seconds, it is back to normal. Again, feels like the carb has shot all the gas into the intake, but left none in the float barrels, and it needs to wait for the fuel pump to catch up.

    This happens seldom, maybe 10 times in 2 years, the rest of the flogging I give it has no effect on causing a sputter.

    I don't really like the mechanical Edelbrock fuel pump. It is too big, and in the way of getting my oil filter in and out. I was thinking two electrical pumps, one near the tank to push, and one near the carb to pull/push, kind of give it a boost, then larger diamater stainless braided lines the entire way. Sound like it would improve. I just need to keep my pressure at the 6psi that edelbrock needs, but increase the flow.
     
  5. scooper77515

    scooper77515 No current projects.

    Joined:
    Jun 30, 2004
    Messages:
    14,672
    Likes Received:
    73
    Trophy Points:
    233
    Location:
    Issaquah/Grand Coulee, WA
    Vehicle:
    Fresh out of Mavericks
    Maverickrick

    I am hard of hearing, and the car is kinda loud, but maybe those voices are why I always get odd stares at the lineup :huh:

    OR, it might be because I am the only guy at the track with that wierd looking "Vega" :16suspect
     
  6. stmanser

    stmanser Looking for a Maverick

    Joined:
    Jan 4, 2005
    Messages:
    2,818
    Likes Received:
    7
    Trophy Points:
    112
    Location:
    Davenport, Iowa
    well think about this.... you do a nice long burnout... and then it lunges forward.... so the gas is sloshed around... and then stalls because the floats are bouncing around.;..

    i would think that maybe the floats arent adjusted right... but thats my guess.. since i dont have that problem... just a thought... im sure if i had traction, i might have that problem.. :)


    good luck figuring it out
     
  7. scooper77515

    scooper77515 No current projects.

    Joined:
    Jun 30, 2004
    Messages:
    14,672
    Likes Received:
    73
    Trophy Points:
    233
    Location:
    Issaquah/Grand Coulee, WA
    Vehicle:
    Fresh out of Mavericks
    stman, did you ever get that mixture thing figured out? Did it fix your running temps?I finally bought the Edelbrock metering kit, and will run these new plugs a bit to see where my mixture sits.
     
  8. Rick Book

    Rick Book Member

    Joined:
    Mar 9, 2002
    Messages:
    5,744
    Likes Received:
    13
    Trophy Points:
    197
    Location:
    Thailand
    Vehicle:
    Missing my old '70 Maverick
    The "loading up" refers to the cylinders filling up with fuel because the plugs are firing at a lower rate than they were during burnout - when your fuel pump was delivering lots o' fuel. The air/fuel mixture is 'rich' during this "load- up" time.

    I believe. :D
     
    Last edited: Nov 2, 2005
  9. stmanser

    stmanser Looking for a Maverick

    Joined:
    Jan 4, 2005
    Messages:
    2,818
    Likes Received:
    7
    Trophy Points:
    112
    Location:
    Davenport, Iowa

    well i am not sure... i did jet the primaries to a 104 jet and the secondaries to a 100 jet.. and the rods are 73 47 (i think) (stock jets were 100 and 95 and stock rods were 7047)

    right after i did the jetting, i drove it to work and it was about 100 that day... it got up to 200.. but that was it.. so i am not sure if the cooler temps made it run cooler or the jetting... i do know i am still a little lean... but it runs like it is too rich.. so i think i need different rods...

    i need to get with someone who knows how to tweak it...
     

Share This Page