Fuel in cylinders to start

[swick]

Hi guys, got a new scenario to figure out on my 99 120hp Force outboard. Haven't used it since the summer so I took the carbs off, cleaned, and reinstalled. Not sure if this is the cause or part of the problem, but lets debate it a bit. The new thing is that I can't start the engine without pouring a little fuel into the cylinders. That being said, when I do, it fires right up, no problems and continues running fine, after which it will fire up fine without need to pour more fuel into the cylinders (as long as I let it warm up the 1st time around). I installed a fuel/ water separator, thinking maybe the fuel itself was questionable, cleaned the fuel filter out, and replaced the primer bulb and fuel lines. This eliminates a lot of other fuel scenarios, but still can't figure out why the need to pour into the cylinders to get it going initially. Any thoughts?

 

[jerryjerry05]

Re: Fuel in cylinders to start

First do a compression test.
Starting procedures??
Motor down(all the way) throttle fast idle set ,ball pumped.
Key pushed in to choke/enrich,then turn key.
Turn over,should start right away.Keeping the key in can put too much fuel in the system.
If the enricher is bad it won't send fuel; into the throat of the intake.

 

[Frank Acampora]

Re: Fuel in cylinders to start

Check the connections on the enrichment valve. It is located between the carbs. Much more fuel is needed for a cold start. When cold, the gasoline does not vaporise as well as when warm so to get the correct amount of fuel to air, more fuel must be added.

Thus: no problems when starting warm yet no cold start unless extra fuel is added into the cylinders indicates that the enrichment valve is not working or disconnected---You ARE pushing in the key and holding while cranking to "choke" the engine---aren't you?

 

[swick]

Re: Fuel in cylinders to start

Thanks guys. It sure was the enrichment valve. Had a bad connection, cleaned it up with a wire brush on my dremel and fired right up. I held it in for about 30 seconds, it attempted to start, I gave it another 30 seconds and thats all she needed. Its fantastic when its something simple. Thanks again.

 

[jerryjerry05]

Re: Fuel in cylinders to start

Just send a check.