Air in cooling system, how???
#1
Air in cooling system, how???
Does anyone know a way for air to get pumped into the cooling system other than the head or gasket? For hours of running when full the air bubbles were coming up through the radiator and it would blow the water out of the reserve tank. Had to put water in it like every 50 miles to keep it cooling. I start to tear it down for the head gasket, pull the thermostat housing, pull the belt, fill it up, start it up, no bubbles. Race it up no bubbles. I'm stumped. It had no coolant leaks, just blows the water out. Could it be that it only leaks when hot? Any ideas, I have to get this thing running by tomorrow.
#7
Originally posted by DF5152
take the truck to ur freindly neighborhood emission station and hold the probe over the rad fill neck and see if you are getting exhaust out. if so bad head gasket
take the truck to ur freindly neighborhood emission station and hold the probe over the rad fill neck and see if you are getting exhaust out. if so bad head gasket
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#9
It does not overheat until it runs out of water which is forced out the overflow tank. Every fifty miles or so I can stop, let the pressure off, fill it up and it runs fine till it runs low again. My thought was the head gasket, already bought the gaskets, but there is no bubbles out the engine with the belt off and running.
#11
dont know how else u could test it unless u did a compression test or cylinder leak down test. dont know what the correlation between the belt being off and on is but something is introducing pressure into the system. Dont know how the WP would do that it only circulates the water unless when it spins it draws air in from a weep whole somehow and is pressurizing the system but that would be a first for me..
#13
Dixie, do you have access to a radiator tester that has the pressure gauge on it, if so, put it on and see what kind of pressure you got. Could it be air trapped in the system and making the water turn to steam, which would blow the cap??? or could your radiator be plugging up un you??
Emission testing down here We don't need to test, if it smokes, we got emissions
Emission testing down here We don't need to test, if it smokes, we got emissions
#14
Originally posted by DF5152
dont know how else u could test it unless u did a compression test or cylinder leak down test. dont know what the correlation between the belt being off and on is but something is introducing pressure into the system. Dont know how the WP would do that it only circulates the water unless when it spins it draws air in from a weep whole somehow and is pressurizing the system but that would be a first for me..
dont know how else u could test it unless u did a compression test or cylinder leak down test. dont know what the correlation between the belt being off and on is but something is introducing pressure into the system. Dont know how the WP would do that it only circulates the water unless when it spins it draws air in from a weep whole somehow and is pressurizing the system but that would be a first for me..