overheating

1998 CHRYSLER GRAND VOYAGER
50 MILES • 6 CYL
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FLYBOY99
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my van started shooting water into the overflow. it was more like a blockage problem to me so here is what i have tried so far with no luck. i removed the thermostat to one make sure it was not stuck and also to make sure i had circulation. problem continued the circulation seems slow to me not sure how fast it should circulate. so next i changed the lower rad. hose and at that time flushed the block as well as the rad. problem continues i am now about to replace the water pump. there is just not that much to a cooling system. I own an aircraft maintenance shop now we don't have radiators but i am a good mechanic.
Apr 17, 2011 at 10:58 PM
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CARADIODOC
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I think you're on the wrong track. Suspect a leaking head gasket. There is a tool to check for combustion gases getting into the cooling system. It is a glass cylinder with two chambers partially filled with a dark blue liquid. Air is drawn from the radiator through the liquid. If combustion gases are present the liquid will turn bright yellow.
Apr 17, 2011 at 11:32 PM