Engine floods - gas comes out everywhere. See pic

[bumrunner]

2000 Mercury 9.9 bigfoot 4-stroke.
Engine continually dies on me, when I can get it to run, as long as I keep it at a high throttle, it will stay running, the minute I throttle down it stalls. I took the cover off when I did get it running and noticed gas coming shooting out all over the place from the areas circled in the picture. When I am cranking the engine, you can see gas in the water. Started noticing a problem with changing the throttle early this year, any change would cause a hesitation, then it would pick up or slow down as desired. Now it just floods and spills gas everywhere. Any suggestions?

 

[Dave1027]

Re: Engine floods - gas comes out everywhere. See pic

I'd guess a sunk float or bad needle valve. The carb most likely needs a rebuild.

 

[Big Pete]

Re: Engine floods - gas comes out everywhere. See pic

Looks like problem i had .

stuck needle and gasket gone.

do a carb clean and you should sort it ..

 

[Pudfark]

Re: Engine floods - gas comes out everywhere. See pic

I have the same problem with mine, 9.9 fourstroke mercury 2002 sr# 0T544813
I have the carb kit in hand and waiting for the fuel pump diaphram kit to arrive.
My motor sat in a garage for six years, unused...also replacing the impeller...
Currently, it runs great, though it leaks fuel like its free...lol
I was told to run Qwik klean and blue stabil in the fuel mixed at the proper
ratios...I do and hope that it will help with the ethanol problems mentioned
here in the forums. I have learned much from all of you.
Many Thanks to the nice folks who help us noobies with wise concise advice.

 

[rickryder]

Re: Engine floods - gas comes out everywhere. See pic

Float or needle. Gotta open the carb up