Posted by Will Herring on September 28, 2012 at 12:08:12 from (50.103.227.28):
So I flushed the coolant system in the old WD and refilled it with water (am going to put antifreeze 50/50 mix this weekend). However, I ran the tractor with the cap off for about 5 minutes to let it bleed off and get the air pockets out... Then put the cap on and drove it around for about 15 minutes. I noticed something strange...
If you go from wide open throttle down to idle, water will spit out of the overflow. Now, I did have the radiator full up to the overflow hole to start with (and filled it back up that high as it bled off air, as well).
So I ran it some more with the cap off, and noticed that at idle the water would shimmer a bit with turbulence, but it would come up almost to the overflow hole. However, if I would pull the tractor into mid-throttle or more, the level of coolant in the radiator would drop almost an inch and stay that way for most of the time (sometimes it'd come back up a little, then drop back down again).
Then you'd drop the tractor back down to idle and it'd fluctuate back up to the overflow hole again. Other than the fact that it would look weird and dribble water from time to time, the tractor was running great and sounded just like it always has for the past 10 years or so.
I was mostly doing this to watch for air bubbles to see if I had a head gasket leak, but I am mostly just puzzled... Do I have a bad thermostat? Blown head gasket? Just some gunk in my coolant system that I need to work on flushing out before I put antifreeze 50/50 mix in it? Or is this normal and I just overfilled the system? I am at a loss here.
This post was edited by Will Herring at 12:11:06 09/28/12 2 times.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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