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Picture of bad fuel pump diaphram

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  • Picture of bad fuel pump diaphram

    I just thought that this would be good for people like me who are just learning for what to look for. I have circled in red where there is a hole in it and it is also very easy to see the threads showing from the cracking. This came off my fuel pump. I know for sure it had been in there for more than 5 years. So if you buy a boat and know that it has been sitting for a long time or even if not check the daiphram. It is super easy to do!



  • #2
    Re: Picture of bad fuel pump diaphram

    What kind of motor do you have?

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    • #3
      Re: Picture of bad fuel pump diaphram

      She has a 87/88 85hp Force.
      GOT LOTS OF USED PARTS FOR SALE.
      TWIN 88/85'S
      Everything from power heads to controls.

      CHECK OUT MY BOAT REPOWER THREAD.


      Lots of parts .


      Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.



      88 Bayliner 21CC Twin 85hp Forces.

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      • #4
        Re: Picture of bad fuel pump diaphram

        Now you see why I say to put a cheap filter between the fuel pump and carbs. All that junk that cracked off the diaphragm goes right to the carb and can clog the inlet needle, causing one cylinder to run lean which can melt pistons.

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        • #5
          Re: Picture of bad fuel pump diaphram

          Originally posted by Frank Acampora View Post
          Now you see why I say to put a cheap filter between the fuel pump and carbs. All that junk that cracked off the diaphragm goes right to the carb and can clog the inlet needle, causing one cylinder to run lean which can melt pistons.
          That what I did.

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          • #6
            Re: Picture of bad fuel pump diaphram

            The bottom cylinder was running lean and not sure yet if have piston problem. Was told that I was running my motor on 2 cylinders, Compression is good now

            Comment



            • #7
              Re: Picture of bad fuel pump diaphram

              Originally posted by Frank Acampora View Post
              Now you see why I say to put a cheap filter between the fuel pump and carbs. All that junk that cracked off the diaphragm goes right to the carb and can clog the inlet needle, causing one cylinder to run lean which can melt pistons.
              How do you put a filter between the pump and carbs?
              Geeco
              1988 Blue Fin Sportsman 1700
              1988 Force 85 hp
              Restoration Thread http://forums.iboats.com/showthread.php?t=383916

              Comment



              • #8
                Re: Picture of bad fuel pump diaphram

                Cut the fuel line between the pump and carburetors and install an in line fuel filter similar to this.

                http://www.***************/webapp/wcs...4&ci_sku=27754

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                • #9
                  Re: Picture of bad fuel pump diaphram

                  You cut three inches out of the fuel line anywhere you think convenient between the fuel pump outlet and the carb inlet. Insert the plastic filter and clamp it in place. Don't ask me where: Use a little imagination---this is not rocket science.

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                  • #10
                    Re: Picture of bad fuel pump diaphram

                    Originally posted by Frank Acampora View Post
                    You cut three inches out of the fuel line anywhere you think convenient between the fuel pump outlet and the carb inlet. Insert the plastic filter and clamp it in place. Don't ask me where: Use a little imagination---this is not rocket science.
                    Thanks. Not having my motor in front of me at work, I forgot about the line leading from the pump to the carb.
                    Geeco
                    1988 Blue Fin Sportsman 1700
                    1988 Force 85 hp
                    Restoration Thread http://forums.iboats.com/showthread.php?t=383916

                    Comment



                    • #11
                      Re: Picture of bad fuel pump diaphram

                      The motor it came off of was 1989 force 85HP

                      Comment



                      • #12
                        Re: Picture of bad fuel pump diaphram

                        Click image for larger version

Name:	d435bf41dc3ebf1675ab0364c7a8cf9c.jpg
Views:	2
Size:	146.7 KB
ID:	73226
                        Real easy to do, took me about 15 minutes.

                        Tom
                        1989 Ebbtide Campione 180
                        1989 Force 150 horsepower


                        In rememberance of...
                        "They that go down to the sea in ships"

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                        • #13
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                          Re: Picture of bad fuel pump diaphram

                          ON the diaphram right below the red circle you will see some orange & brown this is from running old gas through the motor. So if buy a boat and it has been sitting for awhile first thing you should do is get rid of the old gas or you will continue to have clogged carbs. I actually had a mechanic put an inline filter on as a solution to the problem and it did not work at all.

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