Z 4 C00l l Ii VI when the engine is hot due to the rapid evaporation of Air may be drawn into the cooling system through coolant Telltale stains of a grayish white or rusty leakage at the water pump seal Combustion gas may color or dye stains from antifreeze at joints in the be forced into the cooling system through a leak at the cooling system are almost a sure sign of small leaks cylinder head gasket even though the passage is too even though there appears to be no damage small to allow water to enter the combustion chamber tooling System rvlu Illagnula Condition Possible Cause Correction HIGH TEMPERATURE 1 Coolant level low 1 Replenish coolant level INDICATION OVERI IEATING 2 Fan belt loose 2 Adjust fan belt 3 Radiator hose s collapsed 3 Replace hose s 4 Radiator blocked to airflow by 4 Remove restriction debris or special equipment 5 Faulty radiator cap 5 Replace cap 6 Vehicle overloaded 6 Reduce load 7 Defective Tempatrol fan 7 Replace fan 8 Ignition timing incorrect 8 Adjust ignition timing 9 Idle speed low 9 Adjust idle speed 10 Air trapped in cooling system 10 Purge air 11 Vehicle in heavy traffic 11 Operate at fast idle intermittently to cool engine 12 Incorrect cooling system compo 12 Install proper component nent s installed 13 Faulty thermostat 13 Replace thermostat 14 Water pump shaft broken or 14 Replace water pump impeller loose 15 Radiator tubes clogged 15 Flush radiator 16 Cooling system clogged 16 Flush system 17 Casting flash in cooling 17 Repair or replace as necessary passages Flash may be visible by removing cooling system components or re moving core plugs 18 Brakes dragging 18 Repair brakes