• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.


Announcement

Announcement Module
Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old topics or hijack existing topics. Old topics of a technical nature are like a library book, Please do not write in them.

2. Old topics should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís topic (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new topic of your own.

4. If you have a question for the original poster (OP) and the topic is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old topic.

5. By starting your own topic, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís topic. And those answers will be specific to your particular issue.

6. Please do not post to topics that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any topic that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old topic.

7. Posting at the end of any topic is considered to be hijacking the original posters topic which in turn subjects the topic to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive topic asking you not to reply to old topics. The Red banner will read: Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

speedometer - pipot tube??

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts


  • speedometer - pipot tube??

    I have finally given up the online searching and decided to register here where the community is large with mercury outboard owners.

    I am a somewhat new owner of a Ranger boat with a two-stroke 90 Mercury outboard.

    I don't recall upon receiving the boat whether the console speedometer was functioning. Unfortunately not soon after receiving the boat I took ill and the boat sat a few seasons unused.

    This year I have been using the boat at least one to two times a week and just loving time on the river.

    Now that I am more familiar with the boat and the motor (beware of Hot Foot flooding ewwwww.) I would like to figure out why my speedometer does not work.
    From the research so far it sounds like the Mercury I have is a pipot tube style and so if I follow the back of the speedometer out to the outboard then I should be seeing a pipot connection somewhere in the lower unit?

    Any help would be greatly appreciated.


  • #2
    Re: speedometer - pipot tube??

    I just bought a boat with a 88 mariner 115hp and my speedo doesnt work either... i think there is a tube that runs to the LU and it works off water pressure but i dont know how to check it or clean it...

    so im looking for the same answer!! good luck!

    Comment



    • #3
      Re: speedometer - pipot tube??

      Originally posted by davidf5252 View Post
      I just bought a boat with a 88 mariner 115hp and my speedo doesnt work either... i think there is a tube that runs to the LU and it works off water pressure but i dont know how to check it or clean it...

      so im looking for the same answer!! good luck!
      Subscribe to this post - from the quick reads and searches here it is looking very positive we'll find an answer to this.

      Comment



      • #4
        Re: speedometer - pipot tube??

        Originally posted by bxs122 View Post
        Subscribe to this post - from the quick reads and searches here it is looking very positive we'll find an answer to this.
        Yeah this place is awesome...I have a 1956 johnson javelin 30hp and the guys in the Johnson forum helped me a TON!

        Comment



        • #5
          Re: speedometer - pipot tube??

          The lower unit has an opening on the forward side of the prop. Water pressure will push in the tube and cause the speedometer to register. Look for a small tube threading up from the forward side of the lower unit and carefully unhook it at the first joint in the line. If you can not blow through the tube going down the engine then there is a blockage in the opening on the front of the lower unit.

          Comment



          • #6
            Re: speedometer - pipot tube??

            Thanx TommyA,

            Found the tube then found the small hole - it is packed with dirt. I assume it was mud at one point but has since dried.

            The hose coming from the lower unit is on pretty tight at the first joint. I'll hit it with a little heat to see if that loosens it.

            If I get the hose off what is the best way to clear the clog in the lower unit? I tried digging it out but realistically think I could have stayed there all night getting little pieces. Can I shoot water down the hose to flush it?

            thanx again for the help.

            Comment



            • #7
              Re: speedometer - pipot tube??

              A small piece of stiff wire makes for a good digger. Keep spraying water at the opening and try to squirt water down the upper tube end. If you have a marinade injector with a small enough end that might make it easier from the upper side. Last one I cleared was with the boat in the water. If you can get some water down from the top compressed air will help force it back down. Remember the shortest path for removal is in the direction that the dirt came from.

              Comment



              • #8
                Re: speedometer - pipot tube??

                thanx for the additional information - I dug quite a bit out of the little hole then shot some water in there and dug again.

                The line from the speedometer has a splice at the motor which is a perfect spot to pull and send water in the opposite direction. Unfortunately the spliced tube has a shrink wrap sheathing which I don't have any of to replace so am reluctant to cut it.

                I'll see if my digging was enough - if not then I'll try and clear from the connector mentioned, after I buy some tube wrap or whatever it was they used in assembly.

                Again thanx.

                Comment



                • #9
                  Re: speedometer - pipot tube??

                  Originally posted by bxs122 View Post
                  thanx for the additional information - I dug quite a bit out of the little hole then shot some water in there and dug again.

                  The line from the speedometer has a splice at the motor which is a perfect spot to pull and send water in the opposite direction. Unfortunately the spliced tube has a shrink wrap sheathing which I don't have any of to replace so am reluctant to cut it.

                  I'll see if my digging was enough - if not then I'll try and clear from the connector mentioned, after I buy some tube wrap or whatever it was they used in assembly.

                  Again thanx.
                  The shrink tube is a patch. don't worry about it. Cut it off any way you can, and get a plastic splice from menards, or Napa, or wherever. Brass is OK, just not needed. It ain't gold parts or rocket science, just a barbed splice with about 10 lbs of pressure max on it, and no real damage possible if it should let go, like the plastic line under your kitchen sink.

                  While it's off, blow into the line into the boat with your mouth while peeking over the transom. You should be able to see the speedo jump a little, verifying that's all OK.

                  I usually use a little twist drill spun between my fingers to get the mud out of places like that.

                  hope it helps
                  John

                  Comment



                  • #10
                    Re: speedometer - pipot tube??

                    Originally posted by j_martin View Post
                    The shrink tube is a patch. don't worry about it. Cut it off any way you can, and get a plastic splice from menards, or Napa, or wherever. Brass is OK, just not needed. It ain't gold parts or rocket science, just a barbed splice with about 10 lbs of pressure max on it, and no real damage possible if it should let go, like the plastic line under your kitchen sink.

                    While it's off, blow into the line into the boat with your mouth while peeking over the transom. You should be able to see the speedo jump a little, verifying that's all OK.

                    I usually use a little twist drill spun between my fingers to get the mud out of places like that.

                    hope it helps
                    John

                    sounds like a plan - I was thinking of cutting the shrink tube anyway, speedo isn't working now so what is there to lose if it comes off while on the water.

                    Comment



                    • #11
                      Re: speedometer - pipot tube??

                      using this link http://www.crowleymarine.com/mercury_parts/653/17.cfm

                      Im assuming its the connector assembly(2) everyones talking about? If I dont have a speedo does this piece just dangle there or is there some other use or place it should be connected to?
                      NEWB FAQ and other good info:

                      is my floor/transom/stringers rotted out? Yes your DECK is, and no you should'nt just patch a small part.

                      should I use foam? yes

                      polyester or epoxy? epoxy

                      {insert any other shortcut restoration question here**? and the answer is still NO!



                      my 1984 Stratos Bass Boat Restoration>
                      http://forums.iboats.com/showthread.php?t=404575

                      Comment



                      • #12
                        Re: speedometer - pipot tube??

                        no one has an answer, or is the question that newb?
                        NEWB FAQ and other good info:

                        is my floor/transom/stringers rotted out? Yes your DECK is, and no you should'nt just patch a small part.

                        should I use foam? yes

                        polyester or epoxy? epoxy

                        {insert any other shortcut restoration question here**? and the answer is still NO!



                        my 1984 Stratos Bass Boat Restoration>
                        http://forums.iboats.com/showthread.php?t=404575

                        Comment



                        • #13
                          Re: speedometer - pipot tube??

                          My 50HP BF is the same, no speedo. The connector is gone just a small tube protruding up from the lower unit. It is not a problem.
                          Safe Passage

                          Comment

                          Working...
                          X