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Can the plug wires be replaced on a Force 125?

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  • Can the plug wires be replaced on a Force 125?

    I can't seem to find a definative answer whether the plug wires can be replaced on a force 125 prestolite ignition system.

    if they can, what parts do i need and how do you do it?

    Or, is there something else that is MORE likely causing weak spark.

    Thanks

    M
    1987 Bayliner Capri
    1987 Force 125
    http://www.reinsmith.net/boating.aspx

  • #2
    Re: Can the plug wires be replaced on a Force 125?

    i changed the tips on my '84, 85hp. on mine, the plug wires go directly into the packs.

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    • #3
      Re: Can the plug wires be replaced on a Force 125?

      If you are referring to an all OEM Prestolite ignition then the answer is you cannot replace the plug wires that come with the OEM blue coils. However, there are aftermarket coils, and some later year model coils that are compatible with the Prestolite ignition systems that have a plug wire that can be removed and replaced. My 88' 85 hp motor uses the Prestolite ignition and I am currently using two OEM type coils with the fixed, non-removable plug wires and one aftermarket coil utilizing a removable\replacable plug wire.
      856X8B 88' 85 hp Force w/D.I.Y. rebuilt 86' powerhead, crank and rods. All new bearings and seals on D.I.Y. lower unit. Rectifier mod via Ricky Stator voltage regulator/rectifier. Addicted to fishing So. Cal. N. Baja tuna & YT

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      • #4
        Re: Can the plug wires be replaced on a Force 125?

        If it's the blue prestolite coils, no the wires are not replaceable. Only thing that you can replace are the spark plug boots. Weak spark can be caused by a variety of things. Could be coils, CD packs, poor electrical connections/grounds. Best thing to do is to get a manual.

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        • #5
          Re: Can the plug wires be replaced on a Force 125?

          The coils are black, that means they are the original parts, is that right?

          so if they are black can the wires be replaced? Or should I just replace the whole coil?

          I guess I'm getting a little ahead of myself....

          I have the service manual, the clymer and the seloc. So we're gonna run through the proceedures to check ignition system. I just want to make sure I know what I am up against and what I need to focus on.

          Thanks

          M
          1987 Bayliner Capri
          1987 Force 125
          http://www.reinsmith.net/boating.aspx

          Comment


          • #6
            Re: Can the plug wires be replaced on a Force 125?

            As far as I am aware, coils with a removable plug wire will have a boot similar to the boot that slips over the spark plug where the plug wire is inserted into the coil used to insulate and hold the plug wire into the coil. The OEM coils Force used for the Prestolite ignitions use a plug wire with a conductor of multistrand stainless steel for the core. Whereas most replaceable type plug wires normally tend to be a carbon core conductor. I am also fairly certain that the different core types are not inner-changable due to having different resistance values other then what the coil was designed to work with. At least with the coils using a stainless steel conductor in the core of the plug wire. Which is possibly why these types of coils have non-replacable plug wires.
            856X8B 88' 85 hp Force w/D.I.Y. rebuilt 86' powerhead, crank and rods. All new bearings and seals on D.I.Y. lower unit. Rectifier mod via Ricky Stator voltage regulator/rectifier. Addicted to fishing So. Cal. N. Baja tuna & YT

            Comment


            • #7
              Re: Can the plug wires be replaced on a Force 125?

              Now i get it.

              So to summarize, unless it's a replacement part that allows for replacement, the answer is NO they aren't replaceable.

              and if you Gerry-Rig something you are asking for trouble.

              So, why do they sell those wire replacement kits!!??

              I guess that's a dumb que$tion!

              Thanks for the clarification everyone

              M
              1987 Bayliner Capri
              1987 Force 125
              http://www.reinsmith.net/boating.aspx

              Comment


              • #8
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                Re: Can the plug wires be replaced on a Force 125?

                Yes the original plug wires are a stranded metallic core, they have to be to work propperly with the CD ignition, they might be stainless, I don't know? but either way, they usually don't wear out, and don't need to be changed.

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