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1987 3270 engine kill switch-gctid825085

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    1987 3270 engine kill switch-gctid825085

    My Starboard kill switch suddenly kills both engines! In the cabin but not on the fly bridge. What's happening?
    1987 3270 135-Hino
    Foxtrap, Newfoundland

    #2
    Sure sounds like a short somewhere...trace and check the wiring, clean the connectors with contact cleaner spray. Maybe some of the wiring is touching the port engine somewhere and insulation has been melted off or something? Check that the kill switches are wired correctly too. I'd assume that (like the EH-700's) the kill switches activate a solenoid that pulls a lever forward to shut the fuel flow off (on the EH-700's, it's on the port side of each engine). Look in the engine room and listen while someone pushes the starboard kill switch, and see if the solenoid on the port engine is activating when the starboard kill switch is pushed.

    HTH,

    Dave

    Comment


      #3
      I have noted in the past that some mechanics and electrical technicians take short cuts. Some of them connect both engines to a single kill switch, leaving the second kill switch as a "dummy".

      Reading your message: "suddenly" refers to the fact they did work separately in the past, which obviously would discredit my theory though.

      Tracing the wires from the kill switches would determine if they are separately connected or wired to the same kill switch...

      Good Luck!
      1992 Bayliner Trophy 2502 WA
      2010 Twin Suzuki 140 HP OB's
      "Always finding improvement projects on this old lady..."

      Comment


        #4
        if it is easy to disconnect the wires at the switches, I would and check each switch with a DMM for proper operation. That would discern a switch vs. wiring issue.

        Comment


          #5
          You have kill switches? I have a 1987 3270 and I don't. Did you or a previous owner add them or were they factory?
          Glen Sherwood
          1987 3270 twin 305’s
          Coupeville, WA

          Comment


            #6
            "Gsherwood" post=825311 wrote:
            You have kill switches? I have a 1987 3270 and I don't. Did you or a previous owner add them or were they factory?
            The hino's (diesel) would have kill switches as the gas engines would not if that is what you have.
            "Martini's Law"
            1986 Bayliner 3270, 110 Hino's
            Nova Scotia, Canada

            Comment


              #7
              Only the diesels have them? And they function by killing the fuel? That does not seem ideal
              1993 formula pc 31 twin 454 bravo 2
              1989 2655 cierra 5.7 omc cobra
              2014 "searay" tandom trailer

              Anchor bay clinton river
              Michigan

              Comment


                #8
                "businessgetmoney" post=825339 wrote:
                Only the diesels have them? And they function by killing the fuel? That does not seem ideal
                Why??? Basically that's the only way to stop a diesel since there is no ignition system to turn off like a gas engine. The only other way would be with a shutter to block the intake air. Easier to stop fuel.
                Future 4788 Owner
                Charleston, S.C.

                Comment


                  #9
                  Because running a diesel out of fuel often requires purging the fuel system. Maybe these diesels are different but at a repair shop I use to work at mechanics would have to tare down engines and spend hours to get them started again.

                  To be honest tho, i really have no clue how key off terminates a diesel engine so maybe its just on older or semi truck style engines.
                  1993 formula pc 31 twin 454 bravo 2
                  1989 2655 cierra 5.7 omc cobra
                  2014 "searay" tandom trailer

                  Anchor bay clinton river
                  Michigan

                  Comment


                    #10
                    "businessgetmoney" post=825390 wrote:
                    Because running a diesel out of fuel often requires purging the fuel system. Maybe these diesels are different but at a repair shop I use to work at mechanics would have to tare down engines and spend hours to get them started again.

                    To be honest tho, i really have no clue how key off terminates a diesel engine so maybe its just on older or semi truck style engines.
                    The shut off closes the fuel at the engine. No problem when it is started getting it restarted since your not emptying the whole fuel system. Just how would you suggest a diesel be turned off??
                    Future 4788 Owner
                    Charleston, S.C.

                    Comment


                      #11
                      "businessgetmoney" post=825339 wrote:
                      Only the diesels have them? And they function by killing the fuel? That does not seem ideal
                      That's how pretty much all diesel kill switches work that I'm aware of. How else would you shut off a diesel? There's no spark to short, as there is with a gasoline engine...either shut off fuel or shut off air...seems like shutting off fuel is clearly the better choice. What's your ideal way to shut off a diesel?

                      Dave

                      Comment


                        #12
                        You dont! No need to. Hahahaa...

                        What about killing voltage to injectors?
                        1993 formula pc 31 twin 454 bravo 2
                        1989 2655 cierra 5.7 omc cobra
                        2014 "searay" tandom trailer

                        Anchor bay clinton river
                        Michigan

                        Comment


                          #13
                          Yes thanks, mine's gas.
                          Glen Sherwood
                          1987 3270 twin 305’s
                          Coupeville, WA

                          Comment


                            #14
                            Injectors are operated using pressurized fuel delivered by the fuel injection pump. The injectors do not use electricity.
                            Dick
                            Cheers
                            Oceanside
                            1987 3218 w/ 150 Hinos

                            Comment


                              #15
                              I have not had a chance to investigate my problem yet, it only came up the last trip out. I did restart the engines and they each shut down individually on the fly bridge with the kill switched up there.
                              1987 3270 135-Hino
                              Foxtrap, Newfoundland

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