![]() I have seen screens so plugged up just 1/2 inch of screen was left open to pass oil. Oil voume is restricted by a clogged screen at the bottom of the oil pump. Your oil pressure guage can read normal and still have a problem with oil volume. 1 mechanic in 100 will put the lines back exactly in the line clamps where the factoy put them. ![]() C) Incorrect timing of the engine will overheat the enging D) Kinked or bent transmission lines will cause overheating. Also, 2 gallons of antifreeze is required at all times, to get SOME rust prevention throughout the cooling system. This wire has a useful life of 2-3 years even with "rust preventive" antifreeze. Ever notice the wire lining the inside of the lower radiator hose? The wire is there to stop the hose from collapsing as the water pump sucks coolant thru the hose. Why? The water pump sucks coolant from the lower radiator hose as the pump circulates water. They have a useful life of only 2-3 years top. B) Upper and lower radiator hoses must be replaced. The heater core must also be back flushed. Note: the heater core is a mini radiator in itself and also accumulates rust etc. ![]() Flushing the WHOLE coolant system is required to do it right. In addition when the coolant boils over, the crap & corruption goes gushing straight into your freshly cleaned radiator. The crap and corruption itself holds heat and when the engine is turned off, the heat is released to boil coolant. and dirt settle to the bottom of the engine block- big time. In addition to the above mentioned reasons, I add the following: A) In any 35 something year old car, deosits of rust, calcium. There are a dozen or more reasons a Bird or any other car will overheat.
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