"sneezing?" at cold start

[Dead Eye]

1988 150 blk max<br /> <br /> When I start the motor in the morning it tends to sneeze (the only way I can describe it). It starts up after a few sneezes and runs great after that. Another thing I noticed is sometimes there is a small amt. of feul comming out of the prop when I tilt it down after it gets raised during a break. Either symptoms a problem? Other than that it runs great!<br /> Thanks,<br /><br />Dead Eye

 

[Merc805]

Re: "sneezing?" at cold start

Cold 2 Strokes are always a bit unpredictable. The fuel is from flooding. It has an oulet that lets the excess fuel escape, hence fuel down near the prop. It sounds just like mine...<br />I don't think there is a problem with it.

 

[CU2NITE]

Re: "sneezing?" at cold start

^

 

[steam_mill]

Re: "sneezing?" at cold start

Do a search on pumping the bulb. I had the exact same symptoms on my brand new Merc 90.<br /><br />There was a discussion a few weeks ago about pumping the bulb. Since the, I pump the bulb about 10 times to get it good and hard.<br /><br />Put the key in the on position. Press in for choke and crank. Engine starts perfectly.<br /><br />Don't even have to advanc the trottle advance.<br /><br />Pump the bulb...Cheap fix...

 

[achris]

Re: "sneezing?" at cold start

Dead Eye,<br /><br />The "sneezing" is what's called a 'lean pop'. It happens because the fuel is too lean to fire properly and causes a 'back-fire' through the carb. This is quite normal when the engine is cold, because the choke system on an outboard isn't the same as a car. The outboard choke is either 'on' or 'off', not partial closing like a car. If it does it when the engine is warm, then the idle is set too lean, and that can cause problems. <br /><br />Chris..................

 

[jim dozier]

Re: "sneezing?" at cold start

What Achris says. You might try choking (or priming if it has no choke) a bit more after its started until it warms up.