Radiator Pressure

FL_Jerry · Jun 9, 2006

My overflow bottle has the full mark at about the 75% mark. Is yours full to the top? Do you see any bubbles coming out of the overflow tube? With the overflow bottle not full full to the top, when the tractor runs does it fill up right away to the top?

Jerry

FL_Jerry · Jun 9, 2006

My overflow bottle has the full mark at about the 75% mark. Is yours full to the top? Do you see any bubbles coming out of the overflow tube? With the overflow bottle not full full to the top, when the tractor runs does it fill up right away to the top?

Jerry

buppy69 · Jun 9, 2006

Nothing comes out of the overflow tube until I insert it down in the coolant in the overflow bottle. I can have the bottle filled half way up and it fills up instantly. I pull the tube out and the flow from the tube stops immediately.

Eugene

buppy69 · Jun 9, 2006

Nothing comes out of the overflow tube until I insert it down in the coolant in the overflow bottle. I can have the bottle filled half way up and it fills up instantly. I pull the tube out and the flow from the tube stops immediately.

Eugene

normde2001 · Jun 9, 2006

"Nothing comes out of the overflow tube until I insert it down in the coolant in the overflow bottle. I can have the bottle filled half way up and it fills up instantly. I pull the tube out and the flow from the tube stops immediately.

I'm going to have to give up on that one. That makes no sense to me, unless it's magic.

normde2001 · Jun 9, 2006

"Nothing comes out of the overflow tube until I insert it down in the coolant in the overflow bottle. I can have the bottle filled half way up and it fills up instantly. I pull the tube out and the flow from the tube stops immediately.

I'm going to have to give up on that one. That makes no sense to me, unless it's magic.

Gizmo36 · Jun 9, 2006

I was just wondering is this the nice Tractor you was fixing the rims on.

Gizmo36 · Jun 9, 2006

I was just wondering is this the nice Tractor you was fixing the rims on.

bruce1966us · Jun 9, 2006

Cold engine and hot engine???

bruce1966us · Jun 9, 2006

Cold engine and hot engine???

buppy69 · Jun 10, 2006

Bruce,

I don't understand your question. The pressure doesn't start until it has warmed up but there must not be a thermostat in it because you can touch the block and put your finger in the radiator and it's just lukewarm.

Eugene

buppy69 · Jun 10, 2006

Bruce,

I don't understand your question. The pressure doesn't start until it has warmed up but there must not be a thermostat in it because you can touch the block and put your finger in the radiator and it's just lukewarm.

Eugene

bruce1966us · Jun 10, 2006

I would think that if you have no pressure with the engine cold, that would rule out a head gasket problem.

bruce1966us · Jun 10, 2006

I would think that if you have no pressure with the engine cold, that would rule out a head gasket problem.

kayssupply · Jun 10, 2006

I have heard of 2cyl Yanmars cracking between the cylinders. It would get larger as it warmed up. If you put the overflow hose in a cup and it bubbles or blows the water out that tells you it is getting pressure in the cooling system from compression rather than heat expansion. Also rust is a sign of air being introduced into a sealed system. Every cracked block or gasket I have dealt with had very rusty water in the system.

kayssupply · Jun 10, 2006

I have heard of 2cyl Yanmars cracking between the cylinders. It would get larger as it warmed up. If you put the overflow hose in a cup and it bubbles or blows the water out that tells you it is getting pressure in the cooling system from compression rather than heat expansion. Also rust is a sign of air being introduced into a sealed system. Every cracked block or gasket I have dealt with had very rusty water in the system.

normde2001 · Jun 10, 2006

AHA!! I'll bet it's blowing air, (combustion gas), out the overflow tube at all times and blowing bubbles when you insert it into the bottle.

normde2001 · Jun 10, 2006

AHA!! I'll bet it's blowing air, (combustion gas), out the overflow tube at all times and blowing bubbles when you insert it into the bottle.

buppy69 · Jun 10, 2006

It doesn't blow any bubbles, it blows coolant. I admit that everything I know about diesels I learned on this forum but I have been an auto mechanic for 34 years. I know that when you have a blown head gasket or a cracked head one of three things happen. It either is burning coolant through the exhaust, has oil in the antifreeze or has antifreeze in the oil. None of these three conditions exist. I'm not going to worry about it any more. The tractor runs like a top and it's not overheating. Thanks for everybody's help. I guess evey once in a while the unexplainable happens and this is one of those times.

Eugene

buppy69 · Jun 10, 2006

It doesn't blow any bubbles, it blows coolant. I admit that everything I know about diesels I learned on this forum but I have been an auto mechanic for 34 years. I know that when you have a blown head gasket or a cracked head one of three things happen. It either is burning coolant through the exhaust, has oil in the antifreeze or has antifreeze in the oil. None of these three conditions exist. I'm not going to worry about it any more. The tractor runs like a top and it's not overheating. Thanks for everybody's help. I guess evey once in a while the unexplainable happens and this is one of those times.

Eugene