Problem
Leak and loss of coolant.
Cause
Pressure cap and gasket defective. External leakage. Internal leakage.
Solution
Inspect, wash and pressure test pressure cap. Replace cap if it will not hold pressure. Test pressure system. Inspect connections, gasket, plugs, pumps and hose. Check bolt torque. Disassemble engine if necessary and inspect head gasket and crack head block.
Problem
Engine overheats.
Cause
Low coolant. Loose belt. Pressure cap defective. Radiator or air conditioner condenser obstructed. Thermostat stuck closed. Fan clutched. Electric fan motor or switch defective. Ignition faulty. Coolant flow obstructed. Exhausted system restricted.
Solution
Fill and check leakage in coolant. Adjust and replace belt if worn. Test, replace thermostat if defective. Replace fan clutch. Test ignition and time if necessary. Check water pump, hoses and radiator block. Check for restriction on exhausted system.
Problem
Engine does not reach or slow in reaching operating temperature.
Cause
Open or missing thermostat.
Solution
Test. replace or install thermostat if necessary.
