i have to keep pushing choke to stay running

[hbvfd]

i have a 1988 2 stroke 2 cylinder 25 hp mercury motor. <br /><br />i have to pushing the choke manually on the carb around 10 times and then start motor right up 1 crank. runs around 10-20 seconds full throttle. real smooth then just dies like ran out of gas.

 

[Virago85]

Re: i have to keep pushing choke to stay running

is your bulb tight

 

[hbvfd]

Re: i have to keep pushing choke to stay running

yes bulb is tight. i just experienced this problem when i set my motor for winter.

 

[Virago85]

Re: i have to keep pushing choke to stay running

sounds like one are more floats are stuck shut<br />pump bulb then try taping bowl lightly with scew driver and then see if you can pump bulb more

 

[nigel13]

Re: i have to keep pushing choke to stay running

I had a similar problem with my evinrude. There was a clog in the fuel line, it was pretty easy to fix and ran fine afterwards.

 

[LubeDude]

Re: i have to keep pushing choke to stay running

I could be reading this wrong, but are you turning the engine over while you are pushing in the choke or just pushing it several times and then trying to start it?

 

[hbvfd]

Re: i have to keep pushing choke to stay running

i push the choke on the carb several times then start the motor and it runs for a around 20 seconds then dies like ran out of gas.

 

[LubeDude]

Re: i have to keep pushing choke to stay running

Your starting procedure is wrong.<br /><br />Pump the bulb untill it is very hard, raise the starting lever a little, (youll have to experiment with this setting) then while pushing in on the choke and holding it in, turn the key untill it fires, then when it starts release the choke and push the starting lever down, If it trys to die, push the choke in momentarily and it should pick up, you make have to keep doing this several times before it runs on its own! Pushing the choke several times will do nothing if you are not turning the engine over at the same time.<br /><br />You may have other issues with the wide open throttle problem.

 

[sinkingfast]

Re: i have to keep pushing choke to stay running

clean your carbs out I think you have a emulsion tube blocked.

 

[outboardguy]

Re: i have to keep pushing choke to stay running

Lubedude I believe you are mistaken.This engine does not choke like a regular engine.It has a fuel enrichening valve that injects a little fuel each time the choke is pushed.So that tells me that the carb is plugged and when he starts it up it runs off of the fuel he just injected with the choke until it runs out.Rebuild your carb!!