carb ice

[Heath]

how do you stop carb from iceing up on a evinrude 9.9

 

[bktheking]

Re: carb ice

What temperature are you running the outboard in? How long till it ices up?

 

[Heath]

Re: carb ice

the water was 74 today an. I was running for five minutes

 

[coolguy147]

Re: carb ice

my 1959 10hp condensates heavily around where the carb meets up with the reeds. never seen icing before though.

 

[Tim Frank]

Re: carb ice

Where is the ice forming?
I have run o/b's from the high 90 degree range to well below freezing, and never had this happen or even heard of it happening.

BK, you get carb icing in CP area?

 

[Heath]

Re: carb ice

it gets ice on the outside of the carb how do you fix that? thanks

 

[bktheking]

Re: carb ice

Where is the ice forming?
I have run o/b's from the high 90 degree range to well below freezing, and never had this happen or even heard of it happening.

BK, you get carb icing in CP area?

Never, you'd think have a cowl on with the 120F+ temp of a powerhead would keep things nice and warm in there. It has to do with temp and humidity but normally at much lower temperatures than 70+F.

Question- has that motor got an airbox on it still?

 

[Heath]

Re: carb ice

yes it has a air box on it

 

[bktheking]

Re: carb ice

History on the motor:

Did you just get the motor or have you had it for a while, when did it start doing it. When you rebuilt the carb did you put in a kit, pop out welch plugs, soak it and such. When I think of carb freezing I think or artic cat skidoo's and Cessena's. The Florida boys on the forum seem to have the issue too, maybe they have a cure.

 

[coolguy147]

Re: carb ice

i never thought anything of it. it doesnt affect the performance and i never get ice just water that condenses because it is cold around the carb body.

 

[tashasdaddy]

Re: carb ice

it is 100% normal, the flow of air cools the carb, high humidity, creates condensation, freezes on cold carb. i have had it happen even here in Florida.

 

[Tim Frank]

Re: carb ice

I've had a snowblower carb ice up, but never an OB.

Certainly the venturi effect can drop temp, but as BK said, under a cowl with pretty warm environment?....
Does this actually stop the motor?

I would think the humidity would have to be really high for this to occur.

 

[Heath]

Re: carb ice

the motor does stall out

 

[Fed]

Re: carb ice

Maybe the icing and the stalling are not related and the question should be, "Why does my motor stall out?"

 

[71Windsor]

Re: carb ice

This is a first Ive ever heard of this. Im interested in reading more about the why's and hows. Maybe you should take a temp gun with you and see what the temp around the carbs are.

 

[bill lewinski]

Re: carb ice

I had that happen once. I had problems with my starter rope on my 1955 25hp johnson. I took the cover off to take off the manual starter and after
starting it with the rope I headed back with the cover off and I actually watched the carb as it froze up but that was in 30 degree weather during hunting season/