When should I de-carb my engine?

[gwilly7]

I recently bought a new or new to me anyway boat that has a 75hp Mercury outboard that I want to de-card. I live in Colorado and our boating season is just about over. I am wondering if this is something that should be done before winterizing or in spring?

 

[Chris1956]

You may de-carbon anytime. You need to be able to run the motor on the water at high speed to get the residual de-carbonizing chemicals out of it, before putting it away for the winter. Spring is a good time as well.

 

[tpenfield]

When to de carb your engine???

Do it on Sunday, that's when I'm doing my engines.

One less thing to worry about come spring time. Make sure to have a good oil fogging before your put it to bed for the winter.

 

[gwilly7]

Thank you very much. I will give it a go before my lake closes at the end of the month.