I Have 2000 4.3 liter v6 Chevrolet blazer with some issues. I have changed the thermostat, water pump, and radiator. The radiator I got used so it is leaking from the radiator. The cooling system seems to hold pressure, but the temperature gauge indicates its overheats fast. There is alot of sludge in my radiator reservoir, and when running the coolant will overflow fast with the cap off. It also bubbles out the radiator. There is no milky substance under the oil cap or in the oil to indicate blown head gasket, but it does lose coolant very fast and overheat fast.
Tuesday, September 17th, 2013 AT 6:25 AM