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Sea star system developed air in system

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  • Sea star system developed air in system

    I took the boat out tonight and quickly realized I had no steering above idle speed. There were no stops in either direction. It was fine two weeks ago. No visible leaks. One fitting had a little oil on it but that may have been from the install a couple months ago. The only thing I can think of is that it was 90+ degrees when installed. Now we’re in the low 40’s. Any ideas?
    DSiekman
    2000 Cobalt 293 Twin Volvo 5.0 Gi DP - Sold
    1978 (or 79?) Hydra-Sports 21' CC with 200 Black Max
    2001 F250 7.3 Powerstroke (With a few goodies)

  • #2
    Pretty common problem. Hear it every fall.

    Seals/tolerance/material issues

    Biggest reason I haven’t installed hydraulic steering to this point
    ....

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    • #3
      This is my first season with it. If I refill and bleed can I get another month before I pull it and then rebuild?
      DSiekman
      2000 Cobalt 293 Twin Volvo 5.0 Gi DP - Sold
      1978 (or 79?) Hydra-Sports 21' CC with 200 Black Max
      2001 F250 7.3 Powerstroke (With a few goodies)

      Comment


      • #4
        Depends on how it failed.

        If its short circuiting internally you’ll have to rebuild. It the fluid leaked out you will need to find and repair the leak.
        ....

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        • #5
          Is this a new or used system? If new, all you have to do is locate the leak, and fix it properly. If it's a used setup, pretty much the same thing. Most any system I've ever serviced just had a small leak. One needed a new helm, one I rebuilt the helm, and one needed a new ram. Dozens of others just needed a fitting tightend or replaced.
          If ya can't fix it with a hammer,ya got yourself an electrical problem.

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          • #6
            Used. We rebuilt the helm before install but did not do the cylinder. Hoses are new.
            DSiekman
            2000 Cobalt 293 Twin Volvo 5.0 Gi DP - Sold
            1978 (or 79?) Hydra-Sports 21' CC with 200 Black Max
            2001 F250 7.3 Powerstroke (With a few goodies)

            Comment


            • #7
              Bleed it again. Could have been a small air bubble. Now that it's cooler out may have affected it. Some have autopilot attached to the same lines, you have to bleed that also.
              If ya can't fix it with a hammer,ya got yourself an electrical problem.

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              • #8
                I went out this morning. The leak is at the helm. The post above just reminded me that I had installed a plug where either autopilot or an accessory of some sort was installed. Wonder if that was it.
                DSiekman
                2000 Cobalt 293 Twin Volvo 5.0 Gi DP - Sold
                1978 (or 79?) Hydra-Sports 21' CC with 200 Black Max
                2001 F250 7.3 Powerstroke (With a few goodies)

                Comment


                • #9
                  Originally posted by dsiekman View Post
                  I went out this morning. The leak is at the helm. The post above just reminded me that I had installed a plug where either autopilot or an accessory of some sort was installed. Wonder if that was it.
                  I think you found the issue!
                  If ya can't fix it with a hammer,ya got yourself an electrical problem.

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                  • #10
                    I’m not supposed to use Teflon tape or thread sealant, correct?
                    DSiekman
                    2000 Cobalt 293 Twin Volvo 5.0 Gi DP - Sold
                    1978 (or 79?) Hydra-Sports 21' CC with 200 Black Max
                    2001 F250 7.3 Powerstroke (With a few goodies)

                    Comment


                    • #11
                      I’m also reading that pressure fittings are supposed to have tapered threads. I just matched up the thread on the nipple I took out with a brass plug from my local hardware store. I wonder if that is also part of the issue.
                      DSiekman
                      2000 Cobalt 293 Twin Volvo 5.0 Gi DP - Sold
                      1978 (or 79?) Hydra-Sports 21' CC with 200 Black Max
                      2001 F250 7.3 Powerstroke (With a few goodies)

                      Comment


                      • #12
                        Love You would know if you had a tapered vs. straight thread issue.

                        No no problem using tape on hydraulic connects. Makes a good thread lube in NPT connections
                        ....

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                        • #13
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                          Originally posted by dingbat View Post
                          No no problem using tape on hydraulic connects. Makes a good thread lube in NPT connections
                          Some companies will not recommend Teflon tape for fittings because if improperly applied pieces can get in the system. It is a lube, not a filler so just a little over one wrap is all that it needed. Start one or two treads from the end of the fitting when you wrap and none will get in the system.
                          The last suit you wear won't need any pockets. You might as well spend it on a boat.

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