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  #11  
Old 08-31-2020, 03:29 PM
JBHansen JBHansen is offline
 
Join Date: Jan 2015
Location: Simi Valley
Posts: 37
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thanks to everyone. The issue was my line between the overflow and expansion tanks. It had a curve so the high point was above the overflow tank.
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  #12  
Old 08-31-2020, 03:51 PM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: Granada Hills
Posts: 820
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Quote:
Originally Posted by jaybhansen View Post
It turns out that my cooling radiator was very low (empty). What I don't understand is that my overflow container still was half full. Isn't is supposed to supply more coolant when the radiator is lowering?
You do need to "burp" the system, to get the air out of it.

Maybe read your Rotax manual on how to do so?

There is a radiator cap at the top of the engine, in front of the ignition system, that I would suspect has something to do with it, before you fill up the reservoir on top. Engine probably needs to be warmed up, to the point that the thermostat opens, in an open system, then that the radiator fills up with coolant.

Closed coolant systems are kind of tricky to burp.
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Last edited by NinerBikes : 08-31-2020 at 03:55 PM.
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