Stalling after ideling for 10 mimiyes

Discussion in 'Announcements & FAQs' started by joseph Westbrook, May 10, 2018.

  1. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
    Boat runs great not a single miss. After ideling while backing the trailer it stalls and won't restart for 20 or 30 minutes. Replaced the water / fuel separator filter. Put 75 gallons of gas and SEA Foam and ran 25 gallons through and still stalling . Any advice is greatly appreciated.
     
  2. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    Thats Great, didnt think a turbine would stall like that.

    Without telling us what motors you have all we can do is guess at what could be wrong
     
  3. Happy Dayz

    Happy Dayz Active Member

    359
    Jun 26, 2017
    Sarasota, FL
    '06 260 Sundancer, 6.2, BIII, Kohler 5kw
    79' classic Kona Family Cruiser jet boat..
    6.2 w/ BIII, 502 w/ Berkekley
    looks like an 09 290 w/496 from sig... fuel injected i presume... maybe just idle too low.?
     
  4. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
    She will idle for 30 minutes till cutting off. And recrank after 10 or 15 and then shut off after 20 or 22 minutes and still recrank after 10 or 15 minutes. At 2000 rpms the fuel pump feels cooler to the touch and at idle warmer. Thinking fuel pump? Fuel regulator if it has one. Maybe there's a safety cut off for the fuel if the fuel pump gets hot .
    Replaced the filter already seemed to help top end speed but not the like
     
  5. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
    Yes it is a 09 290 sundeck fresh water cooled 496 magnum .
     
  6. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
    Sorry about that. It's a 496 magnum fresh water cooled single engine on a 2009 290 SEA Ray sundeck . Thanks
     
  7. Espos4

    Espos4 Active Member

    509
    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    When it doesn't start, Does it crank but not start, or is it unable to even crank?

    If it cranks but doest start, you need to check for spark and fuel pressure with the "no start" condition.
     
  8. LG111

    LG111 Active Member

    409
    Jan 4, 2015
    NW
    410
    8.1
    Two sensors I'd inspect first. One the IAC. Just over the bellhousing. Easy to pull just have extra gaskets. See if its sticking and clean with carb cleaner. If that doesn't solve it then replace the crank shaft sensor. It's on top of the bellhousing near the harnesses. I just replaced mine after a month of simular gremlins. Solved the stalling issue. Be sure the o-ring is seated down tight before and during tightening of the 10mm bolt.

    I have twin 8.1s and swapped sensors until the problem followed to the other motor.
    The sensor failure was so fast that no codes could be stored.

    The crank shaft sensor reads the fly wheel like morse code to the ECM. If it fails the ECM can read and fails to tell the spark to fire. Hence just dead like no fuel or spark.

    Good luck.
     
  9. Espos4

    Espos4 Active Member

    509
    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    It’s a 2009?
    Do you have DTS?
    If it’s got an electronic throttle (drive by wire) it probably doesn’t have an idle air control motor.
     
  10. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
     
  11. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
    Thanks for the advice, will check these things this week .
     
  12. joseph Westbrook

    joseph Westbrook New Member

    7
    May 10, 2018
    2009 290 SEA Ray sundeck
    496
    Thanks for your input and after reading more from other people it definitely sounds like the iac. I know the part.# number from the dealer and know what it looks like but I'm just that blind I guess. I can't find this thing and I looked over and over. You wouldn't happen to have a picture of the location would You? The part # is 862998 checked around the bell housing and tried to follow lines , I just don't want to undo something I can't redo. Thanks
     
  13. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Sits on the throttle body. take the plastic flame arrestor cover off. There's a little filter in there you should change as well.. Use a pair of needle nose pliers for that
     
  14. GCHOG

    GCHOG Member

    103
    Mar 25, 2016
    Bass River, Viking Marina, South Jersey
    2006 Sea Ray 260 Sundancer
    6.2 Bravo III
    IAC part # in Sierra is 18-7701.. Standard Motor Products # is AC 423.. The small filter is a Quicksilver product, only a few bucks.
    If I recall , the 2 bolts that bolt it down are Torx head, # 40,
    Standard part is $43 on Amazon . Sierra part is about $78 and up online.
    I've used the Standard AC423 and had good success.
    it really is a 5 minute fix.
     

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