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How to de-carb an Optimax

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  • How to de-carb an Optimax

    I have a 1999 Optimax 150hp, how do you decarb a fuel injected motor ?
    1992 Silverton 34 Convertible w. dual station
    1990 Baha Cruiser 260 Fisherman


  • #2
    Re: How to de-carb an Optimax

    how about sea-foam in the gas Valv?

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    • #3
      Re: How to de-carb an Optimax

      Good ?.We were told at the factory to NOT run anything but gas through the rail. I will see what I can find out at work.TMD

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      • #4
        Re: How to de-carb an Optimax

        listen to the doctor Valv!!! understand somefuel injection systems can be damaged from it.

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        • #5
          Re: How to de-carb an Optimax

          Seafoam, will not decarbon motor, it will help with small varnish and gum deposits on injectors, and a little clean up on heads.I mean real decarbonizing, I have plenty of OMC spray, which does wonders, and would like to figure it out if there is a connector or something on motor where it can be sprayed bypassing fuel system. I know it might be not good to even run mix gas on High Pressure Fuel Injection motors, there were some debates foew months ago, seems viscosity will be changed and will damage motors.So if oil pump goes bad....better replace it, not run any mix.Thanks
          1992 Silverton 34 Convertible w. dual station
          1990 Baha Cruiser 260 Fisherman

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          • #6
            Re: How to de-carb an Optimax

            I own a optimax 200, since the computer controls the oil mixture at different speeds, I doubt that carbon buildup would be a problem like in older 2 strokes. It calculates for the optimum performance, so most if not all the oil is burned. Just my opinion.

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            • #7
              Re: How to de-carb an Optimax

              on car engines you can spray water vapor in the carb and that works really well.Zac

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              • #8
                Re: How to de-carb an Optimax

                Even a fuel injected engine has an air intake. Can't you spray the decarb through the intake?



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                • #9
                  Re: How to de-carb an Optimax

                  By doing that you would saturate the Map sensor and ruin it...we were also warned of doing that at service school.IF you spray..you pay.TMD

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                  • #10
                    Re: How to de-carb an Optimax

                    Hmmmmm???



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                    • #11
                      Re: How to de-carb an Optimax

                      I assume the Hmmm is directed at me?The Map sensor is mounted in the plenun. Any fluid that is sprayed in the intake will saturate the Map sensor... possibly damaging it and making it give false readings.This is right from the factory. Might have the wording wrong...but this is what I got out of it.TMD

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                      • #12
                        Re: How to de-carb an Optimax

                        What is wrong with removing the spark plugs and spraying SeaFoam or other product inside the cylinder, let it soak and then run the engine. I have read articles on the Fitch system and they say to spray in the air intakes, so with what is being said above, that would be a no no for the optimax.

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                        • #13
                          Re: How to de-carb an Optimax

                          No the Hmmmm? was not directed at anyone. Just me thinking about the problem. I forgot about the sensors on EFI engines, as I don't have one right no, no even my van. OK, how about pulling the sensor out, doing the decarb, then re-install?Just a thought.Otherwise, I guess you just decarb from the sparkplug holes only.



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                          • #14
                            Re: How to de-carb an Optimax

                            Removeing the plugs and soaking the cylinders is the prescribed method.You will however find getting those bottom plugs out tedious and back in down right frustrating.Be patient and carefull as it is easy to cross up those plug threads in your frustration.Why the decarb in the first place?

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                            • #15
                              Re: How to de-carb an Optimax

                              I think the solution to spray into plugs is best one. It will be a slow job, since I will probably have to leave cylinder to be cleaned in the TDC position, so it won't leak fluid into exhaust. One thing for sure, I will have to replace plugs, and these babies are $ 15.00 a piece....Thanks for the help everybody.
                              1992 Silverton 34 Convertible w. dual station
                              1990 Baha Cruiser 260 Fisherman

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