Cooling System

"Tune-up" Checklist

• Flush dirt, bugs and leaves from front of radiator with a brush and garden hose.
• Inspect the radiator cap. Replace it if the rubber gasket is broken, dried out or missing.
• Check the condition and level of coolant. If it is rusty, clean the system and replace with a 50/50 mixture of water and ethylene glycol anti-freeze.
• Inspect radiator and radiator hoses for leaks, cracks or soft, mushy condition. Tighten all clamps. Replace hoses as needed.
• Look for the heater hose running from the engine, through the firewall, to the heater core under the dash. Replace swollen or cracked hoses. To check the hoses, start the engine and turn on the heater. If after ten minutes the hoses are cool, they could be clogged.
• Inspect all engine belts for wear and cracks. Replace if worn, cracked or glazed. Adjust loose belts. Note: Some engines have a V-ribbed belt that drives some or all of the accessories. If the belt grooves show excessive cracks or "chunking", replace the belt.
• Check the thermostat operation by running the engine for 10-15 minutes. Generally, it's OK if you can feel warm coolant surging through the upper hose. Beware of an engine that runs too hot or too cool. Tighten loose bolts on the thermostat housing at the engine.
• Clean the engine exterior. Excessive oil and dirt will hide leaks, or insulate the engine, causing it to run hot.