MarkB_MI said: (quoted from post at 13:02:43 01/03/10) Borrow a pressure tester. Mount it on the radiator and start the engine up. If the pressure gage takes off immediately, you have a bad head gasket. If it runs for a minute and the pressure rises only slightly, the head gasket is good and you can look elsewhere.
If you put the pressure tester on the radiator after running the engine enough to stabilize the temperature, any rise in pressure is a good indication of combustion gasses entering the cooling system.
The fact that the heat comes and goes with the cooling system full is almost always an indication of a combustion leak into the cooling system.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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