1. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    I used the ruler part of a carpenters square to line up the two dots on the gears. Im not sure about the harmonic balancer, the timing marks lined uo i think but i cant remember so ill need to check later. it is an aftermarket one if that makes a difference. The original wasnt doing too well.
     
  2. diymirage

    diymirage HP@idle > hondaHP@redline

    Messages:
    17,718
    Likes Received:
    11033
    Joined:
    Oct 12, 2012
    Location:
    michigan
    Local Time:
    2:38 PM
    both marks pointing up, both down, both in or both out?

    and it might be helpful to verify the marks on the balancer are accurate
    no point in trying to get the timing set if you dont actually know how the number on the balancer relates to the piston
     
  3. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    That's the one. Ill try more timing after i verify tdc later. You move the distributor ccw to advance and cw to retard right?
     
  4. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    Both timing gear marks were pointing directly at each other, the top is down and bottom is up.
     
  5. diymirage

    diymirage HP@idle > hondaHP@redline

    Messages:
    17,718
    Likes Received:
    11033
    Joined:
    Oct 12, 2012
    Location:
    michigan
    Local Time:
    2:38 PM
    that sounds right, so we can assume it is very close (allowing for a few degrees in the cam itself)

    verify the timing marks on the balancer and take it from there
     
  6. 73Swinger18

    73Swinger18 ✱ⓈⓌⒾⓃⒼⒺⓇ

    Messages:
    578
    Likes Received:
    212
    Joined:
    Aug 15, 2016
    Location:
    Camarillo, CA
    Local Time:
    11:38 AM
    Correct. It would be a good idea to purchase a piston stop to verify the mark on your balancer. It threads into the spark plug hole.
     
  7. d55dave

    d55dave Well-Known Member

    Messages:
    2,475
    Likes Received:
    957
    Joined:
    May 20, 2010
    Location:
    Kelowna, British Columbia
    Local Time:
    1:38 PM
    I havent been able to look in the carb yet but ill see if i can today, it does occasionally shoot fire back out of the carb though so im not sure if i want to try that.[/QUOTE]
    Timing is off. Twist in more advance and it will start and run. The backfire through the carb is the clue.
     
  8. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    Ive just been having a freind turn it slow by hand while i hold a screwdriver in the plug hole:lol:
     
  9. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    Timing is off. Twist in more advance and it will start and run. The backfire through the carb is the clue.[/QUOTE]

    Okay, thanks ill do that:thumbsup:
     
  10. 73Swinger18

    73Swinger18 ✱ⓈⓌⒾⓃⒼⒺⓇ

    Messages:
    578
    Likes Received:
    212
    Joined:
    Aug 15, 2016
    Location:
    Camarillo, CA
    Local Time:
    11:38 AM
    With a piston stop, you turn the crank until it touches the stop and mark the balancer. Turn it the other way until you hit the stop, make the balancer. Then, you mark right in between those two marks for your TDC. I have a 318 with 135 PSI cranking pressure and the same cam. I locked my distributor in at 38 degrees, so don't be alarmed if your timing is very high. If you are running mechanical/vacuum advance, you will not want to go too far over 14 degs depending on your distributor setup. With your mechanical/vacuum advance added, you may have detonation. You'll need a timing light with a dial on it since your timing cover only goes to 10 degs. Look at some of the threads on how to check your initial, mechanical, and vacuum advance. I'd also get a vacuum gauge if you don't already have one. Set your idle mixture screws for the highest vacuum. The tune takes a while, but is worth the time to get it right.
     
  11. harrisonm

    harrisonm Well-Known Member

    Messages:
    2,463
    Likes Received:
    2173
    Joined:
    Jan 16, 2005
    Location:
    Topeka, KS
    Local Time:
    7:38 PM
    You have received a lot of excelent ideas. I would like to add that your carb could be shot and letting in too much fuel. Once you have tried all the ideas presented, I think it might be wise to look into the possibility of a bad carb.
     
  12. fatoldguy

    fatoldguy Well-Known Member

    Messages:
    4,232
    Likes Received:
    5512
    Joined:
    Nov 7, 2016
    Location:
    Ontario, Canada
    Local Time:
    2:38 PM
    Yes it's it sound like timing . Specially if it backfires through the carb and like 73 swinger said double check the firing order.
     
  13. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    Does anyone have a vaccum hose diagram for the 1974 318 by chance?
     
  14. 73Swinger18

    73Swinger18 ✱ⓈⓌⒾⓃⒼⒺⓇ

    Messages:
    578
    Likes Received:
    212
    Joined:
    Aug 15, 2016
    Location:
    Camarillo, CA
    Local Time:
    11:38 AM
    Last edited: Sep 1, 2017
  15. Ahatchett

    Ahatchett Well-Known Member

    Messages:
    80
    Likes Received:
    9
    Joined:
    Sep 7, 2015
    Location:
    Indiana
    Local Time:
    1:38 PM
    It looks like there is fuel dribbling out of the venturis. What does that mean?
     
  16. 73Swinger18

    73Swinger18 ✱ⓈⓌⒾⓃⒼⒺⓇ

    Messages:
    578
    Likes Received:
    212
    Joined:
    Aug 15, 2016
    Location:
    Camarillo, CA
    Local Time:
    11:38 AM
    Your float height may not be properly adjusted.
     
    • Like Like x 1
    • Faster74

      Faster74 Banned

      Messages:
      148
      Likes Received:
      8
      Joined:
      Jul 21, 2015
      Location:
      Ky
      Local Time:
      7:38 AM
      i had same problem, found a large vacuum hose loose at rear of carb,it would start, but had to keep screw on carb all the way down or hold it at about 2000 rpm to keep it running, after i fixed vacuum leak it idled down at about 800 rpm with no trouble, have you got gas tank on car are running on a fuel cell in the trunk, if you have a manual fuel pump and a fuel cell that gravity flows to your pump, it may be letting too much fuel pressure on your pump, had this problem on a 70 duster, keep fuel cell as close to level with fuel pump as possible, if you have fire backfiring thru carb, you definately have the timing off or cross wired
       
      • Like Like x 1
      • Ahatchett

        Ahatchett Well-Known Member

        Messages:
        80
        Likes Received:
        9
        Joined:
        Sep 7, 2015
        Location:
        Indiana
        Local Time:
        1:38 PM
        Finally got it to idle but it wont stay running when i give it gas. Unless i give it a shit ton.
         
      • 73Swinger18

        73Swinger18 ✱ⓈⓌⒾⓃⒼⒺⓇ

        Messages:
        578
        Likes Received:
        212
        Joined:
        Aug 15, 2016
        Location:
        Camarillo, CA
        Local Time:
        11:38 AM
        What have you done so far?
         
      • RustyRatRod

        RustyRatRod Weenie idiot loser. FABO Gold Member

        Messages:
        58,517
        Likes Received:
        28941
        Joined:
        Jun 7, 2010
        Location:
        Georgia
        Local Time:
        2:38 PM
        Guys, yall all know with ethanol in the fuel, it's damn near impossible to read plugs. So if his plugs are black, it is 100% a fuel problem. Could the timing be affecting it too? Sure, but not so much to turn the plugs black with ethanol laced gas. Ain't happenin. Sounds to me like either the floats are compromised and taking on gas, or there is dirt in the needle and seat holding it open. Either way, you have a CARBURETOR problem.
         
        • Like Like x 1
        • Ahatchett

          Ahatchett Well-Known Member

          Messages:
          80
          Likes Received:
          9
          Joined:
          Sep 7, 2015
          Location:
          Indiana
          Local Time:
          1:38 PM
          I added a fuel pressure regulator, moved timing up a few degrees, and adjusted the idle mixture screws.
           
        • 73Swinger18

          73Swinger18 ✱ⓈⓌⒾⓃⒼⒺⓇ

          Messages:
          578
          Likes Received:
          212
          Joined:
          Aug 15, 2016
          Location:
          Camarillo, CA
          Local Time:
          11:38 AM
          Check your float level. Not sure if your carb has a plastic float or not. If so, it could be cracked and filling with fuel. May be worth buying a rebuild kit and going though it all.
           
        • toolmanmike

          toolmanmike FABO Staff Staff Member FABO Gold Member

          Messages:
          46,852
          Likes Received:
          31103
          Joined:
          Jan 18, 2006
          Location:
          Iowa
          Local Time:
          1:38 PM
          And what carb are you running? What did you set your regulator at?
           
        • Ahatchett

          Ahatchett Well-Known Member

          Messages:
          80
          Likes Received:
          9
          Joined:
          Sep 7, 2015
          Location:
          Indiana
          Local Time:
          1:38 PM
          The carb has brass floats. I may jump to a 4 bbl I've gathered most of the parts needed.
           
        • Ahatchett

          Ahatchett Well-Known Member

          Messages:
          80
          Likes Received:
          9
          Joined:
          Sep 7, 2015
          Location:
          Indiana
          Local Time:
          1:38 PM
          Its running the stock carter bbd 2 barrel and I set the regulator at 5psi.
           
          • Like Like x 1
          1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
            By continuing to use this site, you are consenting to our use of cookies.