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Do those carb cleaners really work?

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  • Do those carb cleaners really work?

    I own a 50 hp Mercury 1984. Should I ever suspect something wrong with the carburetors, is it worth trying those foam carb cleaners first before taking carbs apart? If so, what's good for Mercury? Thanks


  • #2
    Re: Do those carb cleaners really work?

    Hi merc.

    I have used the Mercury Decarbonizer successfully on my 1992 40HP Merc.
    It cleaned out both intake and outake areas and motor rans pretty good.
    I hear it's pretty hard on spark-plugs..... but I didn't notice that symptom.
    Its definately cheaper than tear-down and rebuild.

    Good Luck. CF

    Comment



    • #3
      Re: Do those carb cleaners really work?

      i could use some more opinions...thanks

      Comment



      • #4
        Re: Do those carb cleaners really work?

        mercer, nothing can clean a really dirty carb, other than disassembly, soaking, blowing out, and reassembly with a new kit. the decarb stuff can help but will not totally clean it. but for $6-7 it's worth a try first. always do a linc n sinc after a rebuild. see Clams post in the engine faq on L n S . spraying auto carb cleaner into a 2 cycle engine can damage the engine, as it has no oil, and strips the insides of oil.
        FLORIDA GATORS
        TEBOW Country



        Please, NO PM's (Private Messages) regarding boat/engine problems. they will not be answered.
        That is what these forums are for. Post your questions, in the appropriate Forum.

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        • #5
          Re: Do those carb cleaners really work?

          In some cases carb cleaner, fuel injection or seafoam that you add to the fuel. can help clean the system out. As long as it has a flow and not stopped up all the way.
          In some cases it is worth a try $3 or $4 bucks VS A $200.00 carb job. In most cases when you have a dirty carb it needs to be taken apart and cleaned. But also in some cases a bottle of a additive can do the job.
          Here is a good example.
          One time my new corvette had a skip It was cutting out at WOT and had a ruff idle. I took it to the dealership. They charged me $175.00 to add a bottle of fuel injection cleaner. And to drive my vette around at WOT for about 30 minutes It done the job. But I could have done the same thing for $4.00. + fuel.... Also they told me to run a bottle of good fuel injection cleaner every 3 or 4 tanks of gas . I do now and have not had that problem ever since. So it is a good idea to run a good cleaner in anything from time to time on a regular basis.
          STP in the black bottle is a good cleaner. I use seafoam in my boats. With good results. Tim

          Comment



          • #6
            Re: Do those carb cleaners really work?

            Mercury's "Power Tune" spray de-carb treatment has always worked quite well for me. Give it a try but follow the directions. Lots of folks will recommend SeaFoam and it is also great stuff....actually, I will use either one.

            Comment



            • #7
              Re: Do those carb cleaners really work?

              If you deside to use a carb cleaner use one that mixes in the fuel the junk you spray in the throat of a carb does nothing at all to clean fuel passages and they are where the problems are

              Comment



              • #8
                Re: Do those carb cleaners really work?

                I own a '85 50hp. I love the engine and it may be one the best engines merc ever designed.

                That said, if your '84 has never had the carbs rebuilt, it may be time. It is very easy to do and the part kit is inexpensive. The cleaners can clean the carbs, but a worn needle valve and seat can only be replaced.

                Comment



                • #9
                  Re: Do those carb cleaners really work?

                  Thanks for sharing your opinions.

                  Comment



                  • #10
                    Re: Do those carb cleaners really work?

                    SeaFoam it!!!!!!!!!!! Put a can in your 6 gal tank, if that does not help, it's rebuild time. Plain and simple.

                    Comment



                    • #11
                      Re: Do those carb cleaners really work?

                      I have had excellent results with Sea Foam and Deep Creep, not only in my outboard, but other 2 and 4 cycle engines. My latest caper is a 40 year old diesel tractor that it really cleaned up.

                      In the outboard, the first time, I used something like a pint can to 5 gallons of gas. After that I put in about half a can to anywhere between 5 and 8 gallons of gas and I do it every time I gas up.

                      Mark
                      If you are new to boating or have a new boat, a knowledgeable friend could show you how to operate your boat and save you a lot of grief, maybe some money, and maybe your life.

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                      • #12
                        Re: Do those carb cleaners really work?

                        Some are better than others. S.T.P Fuel injecter cleaner in the black bottle has worked well for me. Mercury power tune has gave good results also, and so has seafoam.
                        Like said before, Most of the time if you need a carb job / Cleaning done. You have to take the carbs apart and clean them.
                        Tim

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                        • #13
                          Re: Do those carb cleaners really work?

                          Why wait until you have a problem. Add SeaFoam in every tank of fuel and don't worry about carb problems.

                          Comment



                          • #14
                            Re: Do those carb cleaners really work?

                            Silvertip Good idea. But I have seen seafoam and other cleaners knock stuff loose and clog a carb. May be so if you had a totally clean system to start with.

                            Comment



                            • #15
                              Re: Do those carb cleaners really work?

                              Seafoam it the best way to go.

                              Comment

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