1990 mercury 9.9 2 stroke won't idle
the title says it all, this started as a question regarding setting a float but thought what I went thru might help others...
"while the outboard runs, it doesn't want to idle down to normal levels and stalls unless you activate the enrichment circuit or have the idle way, way up... I had been thru the carb multiple times with out improvement...".
The real problem with the outboard was the reed valve.... it was the original "reed block"in there, it seems that it was a defective part or at least not a great design from mercury and they have since upgraded the design and part number.... I believe others have had the same problem, basically what I think was happening is that a rubber gasket on the inside and middle of the reed valve stretches and loosens and flops around, effectively blocking or at least disrupts the flow of fuel from the "reed flappers". I was stumped and really only replaced it out of desperation as the reeds showed none of the classic "bad" signs, ie. spitting back fuel or being hard to start.
I had been thru the carb 4 times and it was driving me nuts... any way, its running great now, purring like a kitten.
the title says it all, this started as a question regarding setting a float but thought what I went thru might help others...
"while the outboard runs, it doesn't want to idle down to normal levels and stalls unless you activate the enrichment circuit or have the idle way, way up... I had been thru the carb multiple times with out improvement...".
The real problem with the outboard was the reed valve.... it was the original "reed block"in there, it seems that it was a defective part or at least not a great design from mercury and they have since upgraded the design and part number.... I believe others have had the same problem, basically what I think was happening is that a rubber gasket on the inside and middle of the reed valve stretches and loosens and flops around, effectively blocking or at least disrupts the flow of fuel from the "reed flappers". I was stumped and really only replaced it out of desperation as the reeds showed none of the classic "bad" signs, ie. spitting back fuel or being hard to start.
I had been thru the carb 4 times and it was driving me nuts... any way, its running great now, purring like a kitten.
