2009 9.9 4 stroke won't start in at idle speed. It has to be reved.

[Mdbainor]

I have a 2009 9.9 that I bought new in 2012. The motor has never had any trouble until recently when I had the carburator replaced due to Ethanol issues. Ever since I got it back it just hasn't been the same. One issue is the motor won't start at idle speed when it is cold. I do the normal starting procedure but it just won't start unless I give it throttle in the neutral lock position. Once it is warm it has no trouble starting in idle position. The boat idles just fine once it's on so I know it's not the idle screw. Any feedback would be greatly appreciated.
Thanks

 

[gm280]

Mdbainor, sounds like the choke or enriching system is not working and that is why you have to give it throttle when trying to keep it idling when cold. So I think you should look for that as your problem first... JMHO!

 

[Mdbainor]

thanks for your response. I just looked at it and it looks like both the choke and the enrichment system are fine. Is there anything else you would suggest?