need help with my yamaha

[gotogofishin]

I have a 1995 200 hp saltwater searies and it starts up every time but after about 20 or 30 min. it will not even idol long enough to get it in gear.I replaced the water fuel separator, pugs, wires and did a carb job.Whats next?

 

[DutchMerc]

Re: need help with my yamaha

Is your gastank pulling a vacuum? At what speed is the idle adjusted? Maybe rev it up a bit...

 

[BaileysBoat]

Re: need help with my yamaha

I agree, might be poor venting (Does it hiss when you loosen the gas cap?) or could be be drain back valve sticking at tank. OK at high speed? Fuel bulb staying firm?