1969 650 mercury 4cly wont idle in either gear

rowdyboy321

Cadet
Joined
Jun 25, 2010
Messages
12
when going under way wot runs fine, slow down to almost idle it cuts off. have to pump bulb to keep running then. runs fine above idle i'd say at 1200rpm. comes out of hole fine just have to pump bulb if i let it idle to long. have set idle up as hi as i can without clunking the driveline to peices. and the ball will soften up after slowin to idle like it is loseing prime, as long as i pump it when running at idle it will run smooth.the bulb gets hard when pumped it seems ok. fuel pump seems ok at least at higher speeds than idle.fuel tank inlet is clear, tank is venting, all connections are tight, dont know what else to do, any help will appreiated, thanks
 
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