Buy Yamaha Outboard Parts

Announcement

Collapse
No announcement yet.

Oil pressure in a F90tlr problem... Over pressure!

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

  • #16
    True, hence the white smoke when it shut down. I imagine it was pushing oil past the rings when it was bogging down, just not seeing it on the move.

    Comment


    • #17
      Ok, pulled the fuel pump...the diaphragm is in pieces...
      It is definitely the cause of all the gas in the crankcase.

      Thank you to all who replied. This should save me from a serious bill......

      Comment


      • #18
        Originally posted by Strikefast View Post
        Ok, pulled the fuel pump...the diaphragm is in pieces...
        It is definitely the cause of all the gas in the crankcase.

        Thank you to all who replied. This should save me from a serious bill......
        Well, that was an easy find!!

        If the crankcase is still empty, I'd leave the drain plug out and the filler cap as well so all fuel gases can evaporate till your ready to re-assemble the pump / engine.
        Scott
        1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

        Comment


        • #19
          It has been out all day and will stay out until I get the new part.... I smelled that stale gas odor last season after the shop replaced a cracked water pump housing....

          The diaphragm looks like it has ethanol disease....literally melting apart and has a thin area like a bubble. Will use straight gas from now on. We have several ethanol free pumps in the area.....thankfully it was a simple fix. Just hope no damage was done before it pooped out...

          Glad to have found this forum.......

          Comment


          • #20
            You probably caught it early enough. I'm sure it'll be fine.

            Internally, should be a bit cleaner too!

            IMO, non-ethanol fuel is worth the extra $...
            Scott
            1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

            Comment


            • #21
              This motor is on my skiff and only a 35 gal tank so no issue $$ issue to fill.

              Now my Cobia 22' has a 106 gal tank..... And a two stroke. That's another story...lol

              Comment


              • #22
                Run marine fuel in both boats.....otherwise you will be back with issues on the Cobia. Hopefully not too late...

                Comment


                • #23
                  most likly a bad diaphram.
                  thats about the only way to enter that much fuel in the crankcase.

                  Comment


                  • #24
                    Originally posted by rodbolt17 View Post
                    most likly a bad diaphram.
                    thats about the only way to enter that much fuel in the crankcase.
                    Post #'s 13 & 17..
                    Scott
                    1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

                    Comment

                    Working...
                    X