Gas 4020 carb icing

Bob · Jan 22, 2017

There's some real haters of gas 4020's on this site, but my "Ingrid" has been a pretty reliable snowblowing tractor.

Some days ago @-12?F there was a little icing at the top of the carb before she was fully warmed up, not affecting smooth running, after I blew snow for awhile and worked her the manifold was hot enough to melt that off. Didn't get an "after" photo though.

<img src = "http://i167.photobucket.com/albums/u125/27Grainfield/Deere/Ingrid2_zps7moerc3y.jpg">

<img src = "http://i167.photobucket.com/albums/u125/27Grainfield/Deere/ngrid1_zpsuxkz3wfe.jpg">

Mike M · Jan 22, 2017

Do you have the manifold baffle set so it heats it up ?

Bob · Jan 22, 2017

Yep, and, as I said, it did warm up and thaw after I worked her/warmed her up.

My point was that the manifold heat system works quite well on the 'ol girl.

Mike M · Jan 22, 2017

I can notice a difference on ours too even at warmer temps above freezing.

rustred · Jan 22, 2017

that is a perfectly normal situation on any engine with the updraft carb to ice up in cooler temps. even in summer they will sweat. its called the ventury effect.

Gas 4020 carb icing

Bob

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Mike M

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Bob

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Mike M

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rustred

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