1958 envinrude 35 HP big twin running rough

Home › Forum › Ask A Member › 1958 envinrude 35 HP big twin running rough

  • This topic has 25 replies, 10 voices, and was last updated 5 years ago by olcah.
Viewing 10 posts - 11 through 20 (of 26 total)
1 2 3
  • Author
    Posts
  • November 22, 2018 at 7:44 am #154582
    fleetwin
    Participant

      US Member - 2 Years
      frankr wrote:

      Until proven otherwise, I suspect it is ingesting water into a cylinder.

      Hey Frank, just wondering what I am missing here. You seem convinced this is a water ingestion issue, what is pointing you in this direction? I see the plugs look real rich, but I don’t see water droplets, etc. D

      November 22, 2018 at 8:03 am #154588
      frankr
      Participant

        US Member - 1 Year (includes $3 online payment fee)

        Actually, not “convinced”. More like “suspect maybe.” One of the plugs looks cleaner, like maybe washed/steamed down. Just something to think about, since it seems the usual stuff has already been addressed.

        November 22, 2018 at 8:58 am #154604
        rvdriver
        Participant

          Frankr:

          Thanks for your comment. So what do you think about the carbon seal as a possible culprit?

          Steven

          November 22, 2018 at 10:13 am #154620
          rvdriver
          Participant

            Another question: I am running Champion J6C plugs. Should I run something else or maybe even a hotter plug?

            Thanks!

            November 22, 2018 at 1:24 pm #154651
            rvdriver
            Participant

              I ran a compression check today and both cylinders were right at 120 psi. That was a welcome relief.

              Steven

              November 22, 2018 at 2:32 pm #154662
              frankr
              Participant

                US Member - 1 Year (includes $3 online payment fee)

                J6 is the correct plug. IF, IF it is sucking water, my first go-to would be the exhaust cover plate on the side of the powerhead. They develop pin-holes through it. Carbon seals are sneaky, you usually don’t have any clue on those till it’s too late. You can access the cover by removing the lower cowling pans.

                November 23, 2018 at 7:21 am #154760
                fleetwin
                Participant

                  US Member - 2 Years

                  I realize it is winter in most locations…But, is there anyway you can post a video of the engine running?

                  November 23, 2018 at 9:21 am #154785
                  rvdriver
                  Participant

                    Fleetwin: I tried to post a video but the site only allows 512 KB. I can’t even get 2 seconds of it to upload. I could send an email to you. I am in Texas and it’s 74 here today. I shot the video day before yesterday.

                    Thank you for your help!

                    Steven

                    November 23, 2018 at 5:07 pm #154855
                    fleetwin
                    Participant

                      US Member - 2 Years

                      Steven
                      Send the video to me at:
                      dkellogg56@gmail.com
                      Don

                      November 23, 2018 at 8:22 pm #154892
                      rvdriver
                      Participant

                        I sent the video this evening. Thank you!

                      • Author
                        Posts
                      Viewing 10 posts - 11 through 20 (of 26 total)
                      1 2 3
                      • You must be logged in to reply to this topic.