Cold starting problem

[spada]

I am having trouble starting my 1992 200hp Yamaha.I forward the throttle and engage the choke when I start. I didnt have as much trouble in previous years,but i have had four carbed Yam motors and they all were bad at cold starts.When the engine has run even a couple of minutes it will restart instantly. I have a console cover that intefers with the 704 control so I push the neutral button on the side of the binnacle and push the throttle when leaving for storage but I did the same last season .I assume the gas in the carbs is evaporating because of this but I thought that when I pump up the primer ball this would refill the carbs. Help please!!!!

 

[jim dozier]

Re: Cold starting problem

Does that engine use a choke or a primer system? If an engine starts well when its hot but not when its cold it is either a problem with incomplete activation of the choke or primer system or your idle mixture is a little on the lean side. If the engine has true choke butterflies, pull off the airboxes and verify that the butterflies are completely closed when actuated.

 

[thefishingfreak]

Re: Cold starting problem

on my 250's there fuel injected for cold starts.<br />advancing the throttle while trying to start messes up the throttle position sensor and sends mixxed signals to the computer. <br />not sure if the 200's have the same set up? but my cold start troubles were all fuel injection related.<br /><br />not sure either if i'd want to store the boat with the throttles wide open like that either?<br />mike