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    coil

    My 1998 5.0 starts first crank cold but hot starts are a lot harder. I think it is a weak coil, pumping the gas makes it worse. HEI seperate round coil. What do think?

    #2
    The ignition sensor in the distributor will also give similar symptoms. Could be either. Also need to verify choke plate is fully open.
    1997 Maxum 2400 SCR 5.7LX Bravo II

    Mike

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      #3
      How exactly are you starting the engine when hot ?

      After a run, how do you shut down the engine exactly ?

      Bear with me ... there is a method to my madness.
      Be good, be happy, for tomorrow is promised to no man !

      1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

      '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

      Manalapan N.J

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        #4
        Turn key with no throttle. Run few minutes at ldle after run.

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          #5
          You run it the right way.

          last tuneup ?

          Try this ... Run the engine in total darkness see sparks ?

          Post back!

          With the the help of the other members with better mechanical mind then me ( see da Chief can be humble ) we'll find your solution.
          Be good, be happy, for tomorrow is promised to no man !

          1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

          '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

          Manalapan N.J

          Comment


            #6
            Fuel filter, cap, rotor, wires and plugs last summer. Tune up didn't change the hot hard start. Too darn cold to start it up yet!

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              #7
              How long between shut down and restart? Verify that the choke is fully open. Try advancing throttle 1/4 to 1/3 then crank..

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                #8
                TKS ?
                Be good, be happy, for tomorrow is promised to no man !

                1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

                '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

                Manalapan N.J

                Comment


                  #9
                  Sorry, I don't know what TKS is!

                  Comment


                    #10

                    Originally posted by tooling around View Post
                    Sorry, I don't know what TKS is!
                    Mercruiser Turn Key Start (TKS); does not have a choke but instead uses an enriching circuit on the carb. Know for having issues after a few years. Being that you have a 1998 I doubt yours is TKS.

                    1997 Maxum 2400 SCR 5.7LX Bravo II

                    Mike

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