Home Forum Ask A Member 1972 Evinrude hard starting.

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  • #243466
    russ
    Participant

      Has new carb kit cam and throttle in sync.Lots of spark did compression test 65 psi both cylinders.Will start on maybe 15-20 pulls Lots of fuel in carb will run ok for a while half open and will idle down and just stop. Primer bulb is still hard but have to choke and pull till skin off finger. Now wearing glove. Maybe low compression have not checked head gasket. Thanks for any help. Russ

      #243467
      outbdnut2
      Participant

        US Member

        What HP?

        #243471
        frankr
        Participant

          US MEMBER PAY BY CHECK

          First thing you need to do is stop pulling that rope. If it isn’t running after 3 or 4 pulls, there is something wrong with the motor or your procedure.. Stop pulling and start troubleshooting.

          #243482
          russ
          Participant

            Motor is a 6hp.

            #243483
            billw
            Participant

              US Member

              A six hp OMC is maybe the best-running outboard engine ever built. Don’t waste your time pulling. If you keep pulling like that, you’ll be having to fix the recoil, too. How many times did people bring us an engine to fix the recoil, when the original problem was, it started poorly or not at all….65 psi compression seems a bit low but I am not entirely sure what it should be. Hopefully somebody here does know.

              Long live American manufacturing!

              #243488
              fleetwin
              Participant

                US Member

                Starts hard and hardly runs once started…. 65PSI does seem a bit low for this engine, but could just be the gage….Start with all the basics before ripping into this. Good spark? Fresh fuel/oil supply?? Are you sure there is no water in the fuel supply? Where is the low speed needle set? Initial setting is 1.5 turns out from gently seated. Is the choke linkage working properly, is the choke valve closing fully? Have you changed the plugs? Just cuz they are new doesn’t mean they are good.. Is the engine stiff/hard to turn over? Have you changed/inspected the gear lube? Most 6hps don’t use the pesky drive shaft shock, but the gearcase could be stiff anyway….
                If everything checks out OK, and you can confirm the compression readings with another gage, then it might be time to pull the head, perhaps the gasket is blown between the two cylinders…
                What is the history of this engine? Is it new to you? Has it ever worked properly since you owned it?

                #243489
                crosbyman
                Participant

                  Canada Member

                  high speed nozzle cleaned out with a wire and base gasket in place ??

                  what about top LS drip chamber and that really small orifice in the side channel feeding fuel the top drip chamber

                  did you carb clean and blow out all sections HS jet cleaned out ?

                  do you feel air sucked in the carb (get a friend to pull the cord while you put your closed fingers in front of the carb)

                  carb vent open ? carb gasket in place

                  my 9.5 works fine at 65 psi…work on the carb how was the engine running before the new kit ??

                  Joining AOMCI has priviledges 🙂

                  • This reply was modified 4 years, 4 months ago by crosbyman.
                  #243495
                  russ
                  Participant

                    The low speed is set at 1.5. Motor is new to me.Needs new clutch dog.Got it started and before I took my hand off shifter no forward gear.Had to hold it in place.Have to oull things seee what is going on in lower end and carb.Thanks all for your help.Russ…

                    #243499
                    Mumbles
                    Participant

                      Pull the flywheel and see if the coils are cracked. While you’re in there, the points should be cleaned, polished, and gapped to 0.020″. Also a good time to change out the 580321 condensers as they go bad over time.

                      #243510
                      russ
                      Participant

                        Sorry all that replied the motor is a 1978 6hp. Clued in when crosbyman said high speed needle. Doing to much at one time.Agan sorry for my mistake. Russ…

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