Originally Posted by piston slapper
Dutch is right...the carb soaking solution they sell anymore are an exercise in futility.
They eat plastic and don't touch the varnish that they are supposed to dissolve.
Brake cleaner is they way to go...it also helps to get a flow chart on the carb to know where and how
The air and fuel move through the carb. Then you can know which passages are open as well as the
Ones that need more cleaning.
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Before I sit these carb in this Mechanic in a bottle I am taking out all the diaphrams and the needle. I think some of the carb have passages that nobody can find. I got the perfect candidate for the stuff I cleaned up a BR420 carb a few weeks ago that was leaking out the carb. Used brake cleaner after taking it all apart. Put it together and it was working for a week today I pulled it off and leaking again. I am going into the bath with it. Also got two hand blowers that start real hard and into the bath they go after tearing them down.