Announcement

Collapse
No announcement yet.

3 problems...

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    3 problems...

    Hello all,

    I just bought a '96 Tige with the 350 Magnum Tournament Ski engine. Here is what it does on the water - it starts and idles fine. After I take the boat outside the 'No Wake' zone, I give the engine full throttle. The boat gets up and out of the water in a split second. It runs on plane about 6 seconds before it starts 'bogging' down (bogging - seems like it is running out of gas... like you are going full throttle, then 1/2 throttle, then full throttle, etc). After pulling back the throttle and then letting the boat idle for 2 or 3 minutes, it does it all over again (runs good for 6 seconds and then boggs down again).

    Let me give you a little background about the boat... the previous owner did not winterize it correctly. He would almost completely drain the gas tank before he would winterize it to 'prevent bad gas', but that surely leads to water in the fuel tank over the wintertime (especially with Colorado winters). So far, I have replaced the water-separating fuel filter and it runs a little better, but pretty much the same.

    Problem #2: A few plug wires are allowing the spark to jump from the wire to the closest metal - either the outside ring of the spark plug, or the exhaust manifold. My solution to this will be to replace the plugs and wires.

    Problem #3: There is water coming out of holes on the top and bottom of the water circulating pump (Maybe another winterization problem). Is this normal? The temperature gets to 160 degrees and does not get any higher. There are some attached pictures of this situation.

    Are these problems related? Do I need a new fuel pump or should I look somewhere else for the fuel problem? Do I need a new water pump? Thanks a lot for anyone's help.
    Attached Files

    #2
    Problem #1 - sounds like more water in the fuel. Try draining the filter again.
    Problem #2 - agree with changing plugs and wires.
    Problem #3 - the engine water pump shaft seal is leaking. The holes are vent holes.
    Probably time to change the water pump, too.

    Comment


      #3
      Is the engine carburated? If so, the engine is probably running out of fuel. Sounds like the fuel pump volume is not enough to keep up with demand. As the engine speed increases, the engine pulls fuel from the carburater's fuel bowl at a higher rate, the low volume just cant keep up so the bowl runs dry and the engine stumbles/bogs.

      Might as well change the distributor cap and rotor as well. Use marine grade, not automotive!

      Is it a piss or a drip? I wouldnt worry till it's a piss.
      Mikes Liquid Audio: Knowledge Experience Customer Service you can trust-KICKER WetSounds ACME props FlyHigh Custom Ballast Clarion LiquidLumens LEDs Roswell Wave Deflector And More

      Comment


        #4
        Originally posted by chpthril View Post
        Is the engine carburated? If so, the engine is probably running out of fuel. Sounds like the fuel pump volume is not enough to keep up with demand. As the engine speed increases, the engine pulls fuel from the carburater's fuel bowl at a higher rate, the low volume just cant keep up so the bowl runs dry and the engine stumbles/bogs.

        Might as well change the distributor cap and rotor as well. Use marine grade, not automotive!

        Is it a piss or a drip? I wouldnt worry till it's a piss.
        Yes, the engine is carburated. I am thinking about pulling all the fuel lines as well and blowing them out. Maybe there is a clog?

        Right now, it is a fast drip. The previous owner said it was dripping like that the 3 years he owned it. I will look into a new pump once I get the main problem figured out.

        Comment


          #5
          P1 test Fuel pressure, and when was the fuel filter / water separator changed last?

          P2 yes change the wires.

          P3. Change the water pump. Not that hard on your setup, just make sure you get the correct pump rotation.
          Tige, it's a way of life!

          Comment


            #6
            #1 fuel filter needs changing regardless of anything else just for the sake of preventative maintenance. Hopefully it is not a fuel pump issue.

            #3 Change the water pump, if it has been "weeping" for 3-4 years, it is time. IMO.

            I also agree to change the dist. cap/rotor, as they like to fail according to Murphy's law.
            I'm full of tomfullery

            Comment


              #7
              Originally posted by yellow3 View Post
              #1 fuel filter needs changing regardless of anything else just for the sake of preventative maintenance. Hopefully it is not a fuel pump issue.

              #3 Change the water pump, if it has been "weeping" for 3-4 years, it is time. IMO.

              I also agree to change the dist. cap/rotor, as they like to fail according to Murphy's law.
              I changed the fuel filter yesterday before I put the boat on the water. It helped a little, but did not solve the problem...

              Comment


                #8
                Could be debris in the fuel tank. This used to happen in my buddy's jet boat. We would have to stop and blow the line back through into the tank and it would kick whatever debris was blocking the outlet back into the tank. We finally put a new tank in it after a summer of taking turns giving the old tank "blow jobs". Maybe give yours a blow job and see what it does.
                You'll get your chance, smart guy.

                Comment


                  #9
                  Originally posted by NICKYPOO View Post
                  Could be debris in the fuel tank. This used to happen in my buddy's jet boat. We would have to stop and blow the line back through into the tank and it would kick whatever debris was blocking the outlet back into the tank. We finally put a new tank in it after a summer of taking turns giving the old tank "blow jobs". Maybe give yours a blow job and see what it does.
                  I know this girl...nevermind.

                  Comment


                    #10
                    Originally posted by ImaPigDog View Post
                    I know this girl...nevermind.
                    One time at band camp............
                    Mikes Liquid Audio: Knowledge Experience Customer Service you can trust-KICKER WetSounds ACME props FlyHigh Custom Ballast Clarion LiquidLumens LEDs Roswell Wave Deflector And More

                    Comment


                      #11
                      Originally posted by NICKYPOO View Post
                      Could be debris in the fuel tank. This used to happen in my buddy's jet boat. We would have to stop and blow the line back through into the tank and it would kick whatever debris was blocking the outlet back into the tank. We finally put a new tank in it after a summer of taking turns giving the old tank "blow jobs". Maybe give yours a blow job and see what it does.
                      Guess it is time for me to blow my boat

                      Comment


                        #12
                        Be careful you don't swallow. Once you blow the tank it will be pressurized and it will spit fuel back in your mouth. Pull your mouth off the hose before you run out of breath and have something to catch the overflow with.

                        Is anyone uncomfortable yet?
                        You'll get your chance, smart guy.

                        Comment


                          #13
                          Originally posted by NICKYPOO View Post
                          Be careful you don't swallow. Once you blow the tank it will be pressurized and it will spit fuel back in your mouth. Pull your mouth off the hose before you run out of breath and have something to catch the overflow with.

                          Is anyone uncomfortable yet?
                          Dude, you seem to have far too much experience in this department...you're scaring the rest of us!



                          Oh, were we talking about fuel?
                          Cursed by a fortune cookie: "Your principles mean more to you than any money or success."

                          Comment


                            #14
                            For a carburetor, volume is more important then pressure. Check volume first, if it's good, move on to something else.
                            Mikes Liquid Audio: Knowledge Experience Customer Service you can trust-KICKER WetSounds ACME props FlyHigh Custom Ballast Clarion LiquidLumens LEDs Roswell Wave Deflector And More

                            Comment


                              #15
                              problem 1 and 2 are related you are losing power with lack of spark. problem 3 i dont realy know

                              Comment

                              Working...
                              X