330 Excaliber running fault

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  • team216
    • May 2008
    • 2


    #1

    330 Excaliber running fault

    Hi new member to planet nautique, but not new to the nautique world. Currently own a 2004 216 team which ever since the end of last season we have had a bad intermittent Misfire/Hesitation . Some trips out the boat will be fine, others its will be doing it all the time and struggling to get on the plane with constant back firing. I've changed all the obvious parts like, plugs, leads, fuel filter and even drained the tank but with no improvements.

    Any help would be greatly appreciated as up to this probelm the boat has been faultless...
    Tags: None
  • 2gofaster
    Senior Member of PLANETNAUTIQUE
    • May 2008
    • 671

    • Stevenson Lake-Conroe, Texas

    #2
    RE: 330 Excaliber running fault

    The excalibur has a distributor cap that's similar in design to the old LT1 optispark that used to sit on the front of the LT1 engine in camaro's, firebirds, and corvettes. When you'd get condensation in an optispark, it'd do the exact same thing.
    Shane Hill
    2014 Team 200OB
    67 '13 Prophecy

    Comment

    • JUST-IN-TIME
      • Sep 2007
      • 293

      • ON YOUR BOAT

      #3
      RE: 330 Excaliber running fault

      u really need to plug it into a diagnosis program

      HUMAN BUILT = HUMAN FIXED
      CERTIFIED MARINE/PWC TECHNICIAN
      switchbait.com

      Comment

      • TRDon
        Senior Member of PLANETNAUTIQUE
        • Oct 2007
        • 722

        • MN

        • 1985 2001 1993 Sport carb GT40 2003 SANTE Excalibur
        #4
        RE: 330 Excaliber running fault

        was it just the 05s that have the oil pressure switch that would cause this or was it the 04s as well? I drove a boat that was doing what you discribe and it was intermittent. Try dicsonnecting that oil pressure switch. It will either work or not and it it free to try. The boat I drove would only do it under load. It would rev just fine in neutral.

        Comment

        • SGY
          Senior Member of PLANETNAUTIQUE
          • Jul 2003
          • 990


          #5
          RE: 330 Excaliber running fault

          TRDon, I'm curious about this oil pressure switch fault. I've had an intermittent vibe/misfire since day one on my 05 196. Can you explain more? How do you disconnect the switch?

          Comment

          • JUST-IN-TIME
            • Sep 2007
            • 293

            • ON YOUR BOAT

            #6
            RE: 330 Excaliber running fault

            there is also a water pressure switch
            you guys need to plug it into a computer
            most good dealers will do it for free, if you bought the boat from them

            HUMAN BUILT = HUMAN FIXED
            CERTIFIED MARINE/PWC TECHNICIAN
            switchbait.com

            Comment

            • team216
              • May 2008
              • 2


              #7
              RE: 330 Excaliber running fault

              Have had it plugged into a computer and no faults showed up. Used the boat yesturday and it was the worst its ever been. Used it 2day and it was fine. Its a weird one.. Thanks TRDon will try disconnecting the oil pressure switch and see what happens. Also forgot to say at the start we have replaced the distributor cap, no difference...

              Thanks for your comments so far.

              Comment

              • whataniceboat
                • Jan 2005
                • 18

                • Hertfordshire (UK)

                #8
                Did you change the rotor as well ?
                Is the wire from the coil to the cap red ? if no change it,

                If above are ok then do as everyone is saying and disconnect the oil switch.

                many faults are not shown on "the Computer" and need further investigation.

                Comment

                • aikenis
                  • Jun 2007
                  • 114

                  • Southport, NC

                  #9
                  So the oil pressure switch isn't needed? Or if problem is resolved by disconnecting it, then that means it is bad? What is its purpose? What about the water switch? I have an 03 that just started doing the same thing. I assumed I got a tank of bad gas. I changed the spark plugs and put some Lucas fuel cleaner through it. It got better, but still is 'lopey' at idle and intermittently struggles to get up on plane. Where are these two switches? Thanks!

                  Comment

                  • TRDon
                    Senior Member of PLANETNAUTIQUE
                    • Oct 2007
                    • 722

                    • MN

                    • 1985 2001 1993 Sport carb GT40 2003 SANTE Excalibur
                    #10
                    The oil pressure switch is a switch that turns "on" safe mode for the computer because it thinks the oil pressure is too low to be running safely for adequate engine lubrication. If you disconnect it, it will act as thoug it doesnt have the sensor, thus eliminating the fault. Would I leave it disconnected? Not likely since the sensor is $25-30. A replacement for the sensor for free is keeping an eye on your guages although oil pressure shouldnt be a problem because a oil pump rarely goes bad.

                    Comment

                    • whataniceboat
                      • Jan 2005
                      • 18

                      • Hertfordshire (UK)

                      #11
                      Originally posted by aikenis
                      So the oil pressure switch isn't needed? Or if problem is resolved by disconnecting it, then that means it is bad? What is its purpose? What about the water switch? I have an 03 that just started doing the same thing. I assumed I got a tank of bad gas. I changed the spark plugs and put some Lucas fuel cleaner through it. It got better, but still is 'lopey' at idle and intermittently struggles to get up on plane. Where are these two switches? Thanks!
                      Ok So my next point would be, if it runs ok with the oil switch disconnected then you propably need a new switch. The early excalibur switches have been known to cause trouble, a slightly modified swith has replaced the origional one. I only know this from my problems with early excals fitted in my 196 and 226.

                      Comment

                      • AirTool
                        1,000 Post Club Member
                        • Sep 2007
                        • 4049

                        • Katy, Texas

                        #12
                        Re: 330 Excaliber running fault

                        Originally posted by team216
                        Hi new member to planet nautique, but not new to the nautique world. Currently own a 2004 216 team which ever since the end of last season we have had a bad intermittent Misfire/Hesitation . Some trips out the boat will be fine, others its will be doing it all the time and struggling to get on the plane with constant back firing. I've changed all the obvious parts like, plugs, leads, fuel filter and even drained the tank but with no improvements.

                        Any help would be greatly appreciated as up to this probelm the boat has been faultless...
                        If it is backfiring, it is 99% an ignition problem. As suggested earlier, the coil wire may be jumping to the plug wires. This is a common problem on Vortec 5.7 engines even in the auto/trucks.

                        It could also be an ignition module. You can take it off and have it checked at the auto parts. Be sure to put the white CPU chip paste on it before you re-install. Don't use silicon.

                        AirTool

                        Comment

                        • aikenis
                          • Jun 2007
                          • 114

                          • Southport, NC

                          #13
                          RE: Re: 330 Excaliber running fault

                          My 03 SANTE has progressively gotten worse. Saturday of Memorial Day weekend towards the end of the day it starting spark knocking and valve tapping. It would rev fine in neutral, but as soon as I put it in gear it would run like crap. Got it home...put some Lucas fuel treatment in it and gas from a different gas station thinking it was a bad gas problem. Took it out that Sunday and it seemed to get better, but would still knock if was given too much throttle...had to ease in to it to get up to WOT. So I changed the spark plugs and drained the fuel/water separator. Then Monday went through the whole tank of gas purchased on Sunday...still would knock, but was bearable. Went out yesterday since Memorial Day and it was the worst ever. Initially, it started right up and ran like really well. As the day went on it got really bad just as there was little water traffic and the water was butter!!!!! I would have to start it in neutral so I could give it gas. To keep the boat running so I could drive I would have to feather the throttle the whole time...couldn't use PP. At idle it was very 'lopy' sounding like it had a cam in it, but ilde was normal around 760rpm. Temp was good, OP was good. Sorry to post such a long paragraph, but I thought I would include as many details as I could so I can get some help on diagnosing this thing. Thanks in advance.

                          Comment

                          • JUST-IN-TIME
                            • Sep 2007
                            • 293

                            • ON YOUR BOAT

                            #14
                            RE: Re: 330 Excaliber running fault

                            time to plug it into a computer before you blow the motor up
                            it could be a ton of things

                            HUMAN BUILT = HUMAN FIXED
                            CERTIFIED MARINE/PWC TECHNICIAN
                            switchbait.com

                            Comment

                            • JUST-IN-TIME
                              • Sep 2007
                              • 293

                              • ON YOUR BOAT

                              #15
                              RE: Re: 330 Excaliber running fault

                              time to plug it into a computer before you blow the motor up
                              it could be a ton of things

                              HUMAN BUILT = HUMAN FIXED
                              CERTIFIED MARINE/PWC TECHNICIAN
                              switchbait.com

                              Comment

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