• 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 threads or hijack existing threads. Old threads of a technical nature are like a library book, Please do not write in them.

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

3. Do not take over someone elseís thread (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 thread of your own.

4. If you have a question for the original poster (OP) and the thread 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 thread.

5. By starting your own thread, 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 thread. And those answers will be specific to your particular issue.

6. Please do not post to threads that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any thread 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 thread.

7. Posting at the end of any thread is considered to be hijacking the original posters thread which in turn subjects the thread 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 thread asking you not to reply to old threads. The Red banner will read: Please note this thread has been inactive for 90 days. For the best results, please start a new thread.

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

1985 johnson 140hp

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


  • 1985 johnson 140hp

    hello all, im new here and new to the boating world (as an owner) I have a 1985 johnson 140hp. I just got it last year had it running out of the water just fine, put it in the water for the first time today. She fired right up went to back her up and she stalled. Started it up again and again it stalled. got her running again and quickly put it in reverse and it ran put it in forward and it stalled. Started it again, put it in gear quickly it ran for a few minutes to just outside the no wake zone throttled up and died couldnt get it running again. I was worried about killing the battery or burning up the starter. Any how could someone stear me into the right dirrection as to what might be wrong. Im thinking fuel pump.

    Thank you


  • #2
    Re: 1985 johnson 140hp

    When running in the lake, check for spark on all 4 plugwires first. You may not be running on 4 cylinders. Any V4 will run fine on 2 or 3 cyls when on the trailer-there is no exhaust backpressure to deal with. It's another issue to have the engine run properly when the exhaust is 2 feet under water. At that point you need all 4 cylinders firing to run properly. If you find solid, strong spark on each plugwire, when floating in forward gear, then turn to fuel issues.
    Last edited by emdsapmgr; March 27th, 2012, 06:39 AM. Reason: changed comment.

    Comment



    • #3
      Re: 1985 johnson 140hp

      You started a new post today, asking about installing new fuel lines. Throwing parts at the engine isn't going to cure it. You need to trouble shoot the engine. Many boaters (ones without a tuned ear) will think that the engine is running fine on a flushette when actually it is not... and this shows up when the engine/boat is in the water... stalls, no power, hard starting, etc.

      First thing to so is to check the compression. What are the compression reading of each individual cylinder?

      Second check is to have the spark plugs removed and test the spark. The spark must jump a 7/16" gap with a strong blue lightning like flame.... a real SNAP! Does it? Note that the 7/16" gap is important.... testing the spark by using the spark plugs is a waste of time, DON'T do that! No tester? Build the following.

      (Spark Tester - Home Made)
      (J. Reeves)

      A spark tester can be made with a piece of 1x4 or 1x6, drive a few finishing nails through it, then bend the pointed ends at a right angle. You can then adjust the gap by simply twisting the nail(s). Solder a spark plug wire to one which you can connect to the spark plug boots, and a ground wire of some kind to the other to connect to the powerhead somewhere. Use small alligator clips on the other end of the wires to connect to ground and to the spark plug connector that exists inside of the rubber plug boot.

      Using the above, one could easily build a spark tester whereas they could connect 2, 4, 6, or 8 cylinders all at one time. The ground nail being straight up, the others being bent, aimed at the ground nail. A typical 4 cylinder tester follows:


      ..........X1..........X2

      .................X..(grd)

      ..........X3..........X4
      Our Questions Require Answers... If You Refuse To Answer Our Questions... How Can We Answer Yours?

      Comment



      • #4
        Re: 1985 johnson 140hp

        bump^

        Comment



        • #5
          Re: 1985 johnson 140hp

          Did you read what I had entered at 9:23 AM this morning (#3)? Let us know what you find.
          Our Questions Require Answers... If You Refuse To Answer Our Questions... How Can We Answer Yours?

          Comment



          • #6
            Re: 1985 johnson 140hp

            yes I did Mr. Reeves thank you and as soon as I get a few min. im going to get all that info and thank you again

            Comment



            • #7
              Re: 1985 johnson 140hp

              Just wondering if there is a rebuild kit for a 1985 140hp johnson fuel pump or do I have to buy a new pump. Just trying to price a few things just in case I need it.

              Comment



              • #8
                Re: 1985 johnson 140hp

                bump^

                Comment



                • #9
                  Re: 1985 johnson 140hp

                  The factory does not sell rebuild kits for their VRO type pumps. They do sell a cheaper replacement pump which has the oil pump deleted-requiring that you premix the oil in the gas tank.

                  Comment



                  • #10
                    Re: 1985 johnson 140hp

                    can u tell me where i might be able to find one of those pumps?

                    Comment



                    • #11
                      Re: 1985 johnson 140hp

                      A vro pump is a small fortune!!! Joe R is leading you in the right direction.

                      IF you do not feel comfortable doing your own proper troubleshooting by the way of the correct shop manual.......... then I would suggest finding a good mechanic.

                      Throwing parts at it can set you back way too much money and really not many things go wrong with 2 strokes.
                      This is a great link to boat specifications http://boatspecs.iboats.com/
                      Please, shop iboats first!!

                      Comment



                      • #12
                        Re: 1985 johnson 140hp

                        please dont get me wrong I will be doing what Mr reeves suggest (need to get to the weekend ).Just not enough time during the week.

                        Comment



                        • #13
                          Re: 1985 johnson 140hp

                          On my '84 70HP Johnson, I cleaned the carbs, changed the plugs, and several other things and found out what it really needed a new squeezebulb.
                          Sometimes it's the simple things.

                          Same symptoms. Hard to start in water. Stalls in water. After 10 minutes couldn't start again.
                          On the muffs and hose ran like a champ.

                          Comment



                          • #14
                            Re: 1985 johnson 140hp

                            just wondering if I should have water running through the system while doing the comp and spark tests today? Dont need to screw anything else up

                            Comment



                            • #15
                              Re: 1985 johnson 140hp

                              No, the only time you need water running thru the engine is when it's running.
                              Our Questions Require Answers... If You Refuse To Answer Our Questions... How Can We Answer Yours?

                              Comment

                              Working...
                              X