1500 temp diffference

/ 1500 temp diffference #1  

turnerbend

Silver Member
Joined
May 19, 2006
Messages
100
Location
Rome, Ga.
Tractor
Yanmar 1500
Started my 1500 today and notice that the temp on the gauge (Sunpro) was rising rather rapidly. It settle at about 205 deg. After killing the engine, I check with my heat gun an there was a big difference at the top of radiator and bottom. Top was around 170 and the bottom was around 82 degs. just warm to the touch. This model don't have a water pump. just thermo suction. What would cause this?
 

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