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  • Fuel pump help

    Completely stumped..... Boat is an 07 xstar SS with 6.0 crusader. Ran boat for about 3 hours the other day and everything ran fine with no issues. Make it 100 yards from the dock and the fuel pump dies. Cycle the key a few time pump kicks on and motor starts up with no issues. Make it another 10 yards boat dies again. Repeated same process cycling key, boat starts up just fine and gets me to the lift.

    So without question it's the notorious fuel pump. Ok no biggie have a spare one brand new in the box just because I knew I was due for one (pretty sad knowing that owning a boat that retailed 100k when new but that's a whole other story) any way, threw the new fuel pump in and bam same exact problem. Hooked up to the computer and there are no fault codes, no check engine lights no alarms, nada.

    Went through all the connections and checked all the grounds and everything looks good. Any ideas ? Also the pump is the exact same Carter pump used in all fresh water series, so the salt series should have no bearing on this issue that I would think.

  • #2
    OK...you are upset at something that is unrelated...Did you purchase the boat new or used?

    First problem is, a COMPUTER is not going to give you the answer you need.

    You are correct on one thing...the fuel pumps are the same in a fresh or an SS boat

    [email protected]
    James (Jim) Kranendonk Pres-BAWS
    Tampa Bay's Exclusive MasterCraft Dealer

    www.BAYAREAWATERSPORTS.com
    (813) 996-BAWS (2297)

    Comment


    • #3
      Originally posted by [email protected] View Post
      OK...you are upset at something that is unrelated...Did you purchase the boat new or used?

      First problem is, a COMPUTER is not going to give you the answer you need.

      You are correct on one thing...the fuel pumps are the same in a fresh or an SS boat

      [email protected]
      Jim, as a dealer do you see many 08's in for pumps or did a tweak to the system take place between 07 and 08? I seem to read here about a lot of 07 and wonder if next yr we start reading about 08's and so on.
      David
      2008 X2 MCX
      1999 Maristar 210 (sold)
      1996 Bayliner 2050

      Comment


      • #4
        Nate it does sound like fuel but I'm not so sure it is or was ever the pump. Based on your symptoms it sounds like you may have bad gas or a plugged filter. I think all of us have been bit with jumping to conclusions on problem resolution and starting throwing parts at a problem (see my stereo post if you need an example).

        So the first questions would be.......

        Is this your first time out this year?
        Did you fill up recently?
        When you pulled your pump were you able to make a visual check of the fuel quality?
        When you had your pump out did you change the filters (especially the filter directly attached to the fuel pump)?
        Were you able to check the fuel rail pressure before and after changing the fuel pump?
        I believe the SS series has a water separator in line to the fuel rail. Did you change that first? and has it ever been changed?

        Don't mean to fire a ton of questions at you but these are some of the thoughts I have based on your issue.......

        Comment


        • #5
          I don't recall off hand, but JimN, said something about the connector to the full pump itself and having seen issues with that in the past.
          -Tim

          Making boomers great again!! Boomin'

          Comment


          • #6
            Originally posted by bturner2 View Post
            Nate it does sound like fuel but I'm not so sure it is or was ever the pump. Based on your symptoms it sounds like you may have bad gas or a plugged filter. I think all of us have been bit with jumping to conclusions on problem resolution and starting throwing parts at a problem (see my stereo post if you need an example).

            So the first questions would be.......

            Is this your first time out this year?
            Did you fill up recently?
            When you pulled your pump were you able to make a visual check of the fuel quality?
            When you had your pump out did you change the filters (especially the filter directly attached to the fuel pump)?
            Were you able to check the fuel rail pressure before and after changing the fuel pump?
            I believe the SS series has a water separator in line to the fuel rail. Did you change that first? and has it ever been changed?

            Don't mean to fire a ton of questions at you but these are some of the thoughts I have based on your issue.......

            Yes first time out.
            Yes it's fresh fuel
            The filter and sock look brand new, no restrictions there that I can tell
            No fuel water separator. It's the same fuel pump and system as the fresh water series.

            I went through all my connections from the pump to the relays to the computer and no bad connections or corrosion. Took it out again tonight for about 3 hours and no issues. Will keep taking it out to see what happens. If not I would venture to say its the brain box. Really hope that's not the case$$$

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            • #7
              I have a 2008 x45 with mcx with the exact same symptoms.....I ordered the replacement $570 fuel pump from Mastercraft. (Scared to do the cheap auto zone version). Pump should be here today and I will advise what I find as well.....hmmmmm

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              • #8
                unhook the out hose from the fuel pump and cycle the key and you'll know real quick if it's a fuel pump issue. if gas doesn't squirt everywhere, bingo! may want to connect another hose to the pump and point it into a cup while a buddy turns the key for ya...

                Comment


                • #9
                  Originally posted by slwayland View Post
                  I have a 2008 x45 with mcx with the exact same symptoms.....I ordered the replacement $570 fuel pump from Mastercraft. (Scared to do the cheap auto zone version). Pump should be here today and I will advise what I find as well.....hmmmmm
                  You could have purchased a fuel pressure test gauge for about $20 bucks. It would have let you know whether or not you need to spend near $600.
                  -Tim

                  Making boomers great again!! Boomin'

                  Comment


                  • #10
                    Originally posted by chriscraftmatt1976 View Post
                    unhook the out hose from the fuel pump and cycle the key and you'll know real quick if it's a fuel pump issue. if gas doesn't squirt everywhere, bingo! may want to connect another hose to the pump and point it into a cup while a buddy turns the key for ya...
                    Just because it pumps fuel doesn't mean it's pumping or maintaining the correct pressure.
                    -Tim

                    Making boomers great again!! Boomin'

                    Comment


                    • #11
                      Fuel pressure can be checked via the fuel rail on top of the motor. There's a "schrader" like valve on it. Key on and there should be pressure. Just unscrew cap and push on valve stem, you'll get gas spray if pump is working. Hook up pressure gage if you have one. Much better and safer.
                      2008 40th Xstar
                      2006 ProStar 197 - sold
                      1992 Ski Nautique
                      1969 Glastron

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                      • #12
                        +1 on moleson10.....use the schrader valve on top of the fuel rail. you should be getting approx 5si on a guage. I have an 08 XStar with the 6.0 and my pump went out 2 weeks ago... I just bought the $75 Airtech E2044 from Advance, took about an hour to install it, and it's been running fine since then. After replacing the fuel pump you may have just had air in the lines from the previous pump. Mine acted weird at first too until I bled the line via the schrader valve.

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                        • #13
                          I bought the airtech E2044 yesterday at Auto Zone for my MCX motor. This will work right??.....looks pretty simple. Is this a plug and play deal or do I need to change out fuel lines, etc??? Can someone explain and I'll step outside and install it. I can return the 623.00 package I just got from dealer if this works

                          Comment


                          • #14
                            Plug and play process. Changed out on my 04 X30 last year and my 05 X 45 this year. Same pump, same process. Remove the canister from the tank. Remove the small Phillips screws holding the pump down in the plastic canister. Unhook the red and black wire from the pump itself. Leave them hooked to the canister. Remove the plastic fuel line from the pump itself, leaving the other end attached to the canister. The removal of the fuel line from the pump is the toughest step in the process. Had to pry it a little without damaging it.

                            Whole process takes about an hour.

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                            • #15
                              I'm so excited!! You guys will have saved me a fortune if this works!!

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