Firing order

Slant 6 Engines

  1. Brian Bearor

    Brian Bearor Well-Known Member

    Messages:
    48
    Likes Received:
    4
    Joined:
    May 1, 2021
    Location:
    New York
    Local Time:
    6:17 PM
    Just purchased a 63 Valiant with a 225. It has been sitting for a bit and running rough. Completed a tune up and the firing order was not to spec. Use the firing order below now will not run. Is it incorrect? FB_IMG_1619875304799.jpg What am I missing? Thank you for all suggestions.
     
    • Thanks! Thanks! x 1
    • Dana67Dart

      Dana67Dart The parts you don't add don't cause you no trouble FABO Gold Member

      Messages:
      8,298
      Likes Received:
      5815
      Joined:
      Jul 16, 2017
      Location:
      Northern Colorado
      Local Time:
      4:17 PM
      The dist might have been installed out of phase with the crank.

      As in the rotor might be pointing at a different post on the cap when the engine is at TDC of the compression stroke on the number 1 cyl.
       
      • Thanks! Thanks! x 1
      • Badvert65

        Badvert65 Long Time Mopar Nut

        Messages:
        369
        Likes Received:
        161
        Joined:
        Sep 21, 2014
        Location:
        Brightwood, VA
        Local Time:
        6:17 PM
        That is the correct firing order, but..
        Make certain that the rotor (inside the cap) is pointing to the wire for #1 plug with the rngine at #1 TDC.
         
        • Like Like x 1
        • RustyRatRod

          RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

          Messages:
          81,556
          Likes Received:
          61207
          Joined:
          Jun 7, 2010
          Location:
          Georgia
          Local Time:
          6:17 PM
          The firing order and direction of rotation is correct in the picture. What's not correct is WHERE the wires go in the cap. #1 should be where #4 is in the picture, if the distributor is still installed correctly. I agree with pulling #1 plug, get it up on the compression stroke, line the marks up on zero and see where the rotor is pointing.
           
          • Agree Agree x 2
          • Like Like x 1
          • tonysrt

            tonysrt FABO Gold Member FABO Gold Member

            Messages:
            1,009
            Likes Received:
            526
            Joined:
            Dec 25, 2016
            Location:
            Northport, NY
            Local Time:
            6:17 PM
            That's correct firing order and distributor rotation. Check the points to make sure they're opening and they aren't pitted. Then check voltage at the coil when key is in run position and in start position. Or just crank to see if you get spark while cranking with a shorted spark plug wire. A voltmeter would make this job a little easier. If you are really new to this game maybe seek someone with some more knowledge.
             
            • Like Like x 1
            • 67Dart273

              67Dart273 FABO Gold Member FABO Gold Member

              Messages:
              52,492
              Likes Received:
              21646
              Joined:
              Oct 14, 2010
              Location:
              Idaho
              Local Time:
              3:17 PM
              Ok some "stuff." Some "rambling..........

              First, the main reason on most cars that firing order/ wire location is specified is so that

              Cut factory wires will "lay" right
              The assembly line folks can "rinse, repeat"
              And tune up guys "see what they expect"

              There might be a fair reason NOT to change a working but so called incorrect wire position, especially on a slant. That's because..........

              The dist gear is plastic and can be easily broke with screwin' round
              The dist movement is limited, without moving the bracket clamp position using both clamp bolts........one on the block, and one under the dist.

              HOW TO check/ set timing

              Assuming you don't think the balancer ring has slipped--and there is a way to check that too.........pull the no 1 plug and devise a way to feel for compression. If you can't reach (on a slant) with your finger into the no1 hole, stick your compression gage hose in there or whatever. "Bump" the engine round until you feel compression starting to "come on." Now watch for the timing marks, and carefully stop the engine WHERE YOU WANT initial timing to be, such as 5 BTDC. Now look at the dist. With points, you want to adjust the dist from a retarded position towards advanced until the points just open

              With an electronic "rough" set the dist so the reluctor is in the middle of the pickup coil Look where the rotor is located, install/ remove the cap a couple times and identify which tower the rotor is approaching. THIS IS YOUR no1 tower. You can also install the cap and check timing "on the starter." Put it together and start the engine
               
              Last edited: May 1, 2021
              • Like Like x 1
              • 67Dart273

                67Dart273 FABO Gold Member FABO Gold Member

                Messages:
                52,492
                Likes Received:
                21646
                Joined:
                Oct 14, 2010
                Location:
                Idaho
                Local Time:
                3:17 PM
                My first car was a 57 Chev 265 Hell for a long time I didn't know there WAS a "correct" no1 wire position. This was 66-68, when you pulled into a service station and actually got "service." One day one of the jocks told me, "that thing can't run, the timing is off. The wires are all wrong". Drove in it!!!! Drove it out!!!
                 
                • Like Like x 1
                • pishta

                  pishta I know I'm right....

                  Messages:
                  21,828
                  Likes Received:
                  11256
                  Joined:
                  Oct 13, 2004
                  Location:
                  Tustin, CA
                  Local Time:
                  3:17 PM
                  IIRC all straight sixes are the same firing order...153624. Someone told me think of your fat girlfriend from 4th grade's measurements....! Doesnt matter where the wires are, as long as #1 lines up.
                   
                • RustyRatRod

                  RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

                  Messages:
                  81,556
                  Likes Received:
                  61207
                  Joined:
                  Jun 7, 2010
                  Location:
                  Georgia
                  Local Time:
                  6:17 PM
                  Well.....it does matter if he took the wires off and they were on RIGHT, verses that WRONG diagram he's using.
                   
                  • Agree Agree x 1
                  • Seon

                    Seon Well-Known Member

                    Messages:
                    57
                    Likes Received:
                    81
                    Joined:
                    Apr 20, 2021
                    Location:
                    Lake Camanche, CA
                    Local Time:
                    3:17 PM
                    I've read on several post to place a finger over the #1 cylinder hole to check TDC. I always wad up a piece of paper then bump the starter. Once the wad "pops" out then that's TDC. Works for me that way.
                     
                    • Like Like x 1
                    • memike

                      memike Super Moderator Staff Member FABO Gold Member

                      Messages:
                      49,322
                      Likes Received:
                      15565
                      Joined:
                      Jan 8, 2006
                      Location:
                      on the hill
                      Local Time:
                      5:17 PM
                      I would hate to have the paper or what ever get sucked in ..
                       
                      • Like Like x 1
                      • Agree Agree x 1
                      • KosmicKuda

                        KosmicKuda FABO Gold Member FABO Gold Member

                        Messages:
                        2,261
                        Likes Received:
                        994
                        Joined:
                        Jan 15, 2011
                        Location:
                        N Ohio
                        Local Time:
                        6:17 PM
                        Picture from FSM. His hand is on #1 with #5 to the left of that. Note location of vacuum advance can and cap retention springs.
                        As already stated, if rotor tip is under #1 tower cap at TDC on compression stroke, it should start. A timing light will fire even while cranking.

                        20210502_090526.jpg
                         
                      • Seon

                        Seon Well-Known Member

                        Messages:
                        57
                        Likes Received:
                        81
                        Joined:
                        Apr 20, 2021
                        Location:
                        Lake Camanche, CA
                        Local Time:
                        3:17 PM
                        The wad is shaped like a spit ball and is much larger than the plug hole. Been doing that since the '60's taught to me by an old gear head. But any rate, thought I'd share what worked for me.
                         
                        • Like Like x 1
                        • Thanks! Thanks! x 1
                        • Brian Bearor

                          Brian Bearor Well-Known Member

                          Messages:
                          48
                          Likes Received:
                          4
                          Joined:
                          May 1, 2021
                          Location:
                          New York
                          Local Time:
                          6:17 PM
                          Thank you all for the suggestions. I followed the instructions and it runs much better than before the tune up. 1 was at 11 o'clock and I had it at 6 o'clock.
                           
                        • memike

                          memike Super Moderator Staff Member FABO Gold Member

                          Messages:
                          49,322
                          Likes Received:
                          15565
                          Joined:
                          Jan 8, 2006
                          Location:
                          on the hill
                          Local Time:
                          5:17 PM
                          thank you for clearing that up, I will do that next time sir :thumbsup:
                           
                        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.