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  1. #1
    Join Date
    Sep 2009
    Location
    Austin, TX
    Posts
    144

    Default Second fuel pump to prevent Vapor Lock

    Just wondering if anyone has put the second fuel pump on your boat to prevent vapor lock on pre I think 2008 engines? This is my fourth season and thought I was lucky because I never had vapor lock even down here where it seems to always be hot.

    Well this year it is starting to happen. Only twice so far but with my wife and the kids on it alone most of the time, really want to prevent it from happening.

    I can get the second fuel pump from my dealer for about 250 bucks. If someone has done it, how easy is it to install?

    Thanks
    Skylar18
    2007 Sunsport 22V

  2. #2
    Join Date
    May 2009
    Location
    Carlton Oregon
    Posts
    6,061

    Default

    Im not sure a second pump will fix this problem, the problem is the Lines from the to the fuel pump are getting hot, even if you have a second pump forward of aft i doubt it will fix this problem. I would look more in the direction of getting a pump in the tank like the 2010 boats, or a way to keep that fuel pump and lines cool. Isolate them from the engine heat. This is whats causing the issue.
    Malo <--- Means--Evil or Mean One. This explains a lot.
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  3. #3
    Join Date
    Apr 2008
    Location
    California
    Posts
    2,840

    Default

    Vapor lock is obviously vaporizing of fuel, i don't see how a second pump would solve the issue. Cooling the fuel through the pump and lines would be the answer imo. Has your fuel changed? What fuel grade do you run?
    2007 Mobius LSV

  4. #4
    Join Date
    Apr 2008
    Location
    California
    Posts
    2,840

    Default

    Quote Originally Posted by mmandley View Post
    Im not sure a second pump will fix this problem, the problem is the Lines from the to the fuel pump are getting hot, even if you have a second pump forward of aft i doubt it will fix this problem. I would look more in the direction of getting a pump in the tank like the 2010 boats, or a way to keep that fuel pump and lines cool. Isolate them from the engine heat. This is whats causing the issue.
    We must have been typing at the same time lol!
    2007 Mobius LSV

  5. #5
    Join Date
    Sep 2009
    Location
    Austin, TX
    Posts
    144

    Default

    Same fuel 91. Put stabil in about every tankful. My dealer said it was Indmar's recommendation to install a low pressure fuel pump in the chain. That is what they have done to many boats down here and my dealar said that has solved the problem.

    Of course they could be saying that to sell me the $250 dollar kit! I did talk to the parts guy and an actual mechanic separately about the problem and they both said with no hesitation that was the fix.

    I did notice after the second time that my fuel filter was not replaced like it was suppossed to for it's annual maintenance. I replaced that. Hopefully that was gummed up a bit and was giving me the same symptoms as vapor lock. However, if it happens again, I probably will have to do something.
    Skylar18
    2007 Sunsport 22V

  6. #6
    Join Date
    Jul 2008
    Location
    Snellville, GA & Lake Sinclair
    Posts
    7,109

    Default

    I have also been told that the 2nd pump helps to alleviate the issue, but am skeptical. I need to look for a solution as in GA they have upped the ethanol percentage to 15% and very few stations offer the ethanol-free fuel.
    Drew
    New ride: 2012 Mojo
    Old ride: 2008 OBV

  7. #7
    Join Date
    Jan 2008
    Location
    Tallahassee, FL
    Posts
    11,387

    Default

    Oh, crap! What do they have at the station down the road from you? I know the BP in Milledgeville had ethanol free last year.
    My Mom said I'm not allowed to get wet!
    2008 LSV
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  8. #8
    Join Date
    Sep 2010
    Location
    Lake wallenpaupack PA
    Posts
    846

    Default

    have you looked into this solution?

    http://www.skidim.com/prodinfo.asp?number=49-5137

  9. #9
    Join Date
    Sep 2009
    Location
    Austin, TX
    Posts
    144

    Default

    yep, that is exactly what the dealer is trying to sell me for about that exact same price. Trying to find someone who tried it and figure out if it worked and how easy was it to install.

    I like the cheaper solution of trying to keep the hoses cooler!
    Last edited by skylar18; 06-16-2011 at 12:07 PM.
    Skylar18
    2007 Sunsport 22V

  10. #10
    Join Date
    Aug 2007
    Location
    Alpine, Utah
    Posts
    168

    Default Could be covered by warrantee

    My friend has a Supra, I think a 2008, and it was doing that. When he called the dealer the dealer knew exactly what he was talking about and said it needed a 2nd fuel pump and that Skier's Choice was aware of the problem and that it would be covered under warrantee. So he took it in and they added the 2nd pump for nothing. The problem was immediately resolved and he has never had vapor locking again. So check with Skiers Choice and your dealer.

    Garn
    Garn
    2007 Mobius LS (Direct Drive)

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