Excalibur quits

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  • dwsa
    • Sep 2005
    • 134


    #1

    Excalibur quits

    2005 model 196 with Excalibur engine, idles around 700 rpm, when throttle opened sharply, gear in neutral and throttle returned quickly to idle, engine stalls, same thing under load, when stopping. Any ideas....
    We are a club in the Middle East, Dubai Water Sports Association, run by expatriates, visit us at www.dwsa.net we have no dealership repair agencies here, zero support, so any help will be greatly appreciated. Cheers Greg. :???:
    Tags: None
    • Mikeski
      1,000 Post Club Member
      • Jul 2003
      • 2908

      • San Francisco, CA

      • Current 2005 SV 211, due for upgrade! GS22 or GS24 perhaps? Previous
      #2
      RE: Excalibur quits

      Have not had experience with this before but I might look at these components:

      Throttle Position Sensor (TPS)
      Main engine harness connection (are you running in salt?)
      Hook up a timing light and see if anything weird happens in the ignition system just before it stalls
      Fuel pump (unlikely but possible)

        Comment

        • nms1991
          Senior Member of PLANETNAUTIQUE
          • Apr 2004
          • 477

          • Unknown

          #3
          RE: Excalibur quits

          Sounds like a iac problem more than a tps becauise it does not bog on accelleration. Do you have a limited or se version of the boat?

            Comment

            • biff
              • Jun 2005
              • 7


              #4
              RE: Excalibur quits

              check anti-siphon valve\s in fuel line

                Comment

                • G-man
                  Senior Member of PLANETNAUTIQUE
                  • Jun 2004
                  • 428

                  • Allen, Texas

                  #5
                  RE: Excalibur quits

                  I'm not real mecanical but why would it matter if it were a limitied or se? The only differance I can think of would be keyless ignition.
                  Current
                  2003 SkiNautique 206 LE Yellow - Black - Silver Cloud

                  Previous Fleet
                  2006 Ski Nautique 196 SE Titanium - Black- Silver Cloud
                  2004 Ski Nautique 206 LE Red - Black - Silver Cloud
                  1993 Mastercraft Stars & Stripes 190 Red

                    Comment

                    • DavidF
                      Senior Member of PLANETNAUTIQUE
                      • Sep 2004
                      • 611

                      • Austin, TX

                      #6
                      RE: Excalibur quits

                      I'm with nms1991 on the Idle Air Control (IAC) motor. The function of the IAC is to maintain a specific idle speed, but to ALSO prevent the engine from stalling on rapid throttle closing. The IAC should open up when rpms increase off idle. If not, the engine will stall when the throttle is rapidly closed.

                        Comment

                        • j2nh
                          Senior Member of PLANETNAUTIQUE
                          • Dec 2003
                          • 628

                          • Spread Eagle Wisconsin

                          #7
                          Not trying to hijack but could the Idle Air Control Module also be responsible for the high reving my ZR6 (2005) does when shifting out of gear?
                          2018 200 Team H6
                          2009 196 Team ZR 409
                          2005 196 Limited ZR 375
                          2003 196 Limited Excalibur
                          1999 196 Masters Edition
                          1995 ProStar 190 LT1 (Bayliner)
                          1987 ProStar 190

                            Comment

                            • nms1991
                              Senior Member of PLANETNAUTIQUE
                              • Apr 2004
                              • 477

                              • Unknown

                              #8
                              The reason why I asked is because on the limited with the Faria gauges idt would have a message in the lcd display of the tach if it had a sensor failure and tripped a code. J2nh your problem is a common complaint with the 6 liter, the problem I think it is the IAC cannot react fast enough for that size of engine. Other manufactures have had problems with the same problem on the 6 liter and up engines.

                                Comment

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