Coolant System Inspection to Prevent Overheating

Cost Savings

Checklist Tasks

• Pressure test radiator and hoses to reveal leaks.
• Use a thermal gun on radiator to spot cold, clogged areas.
• Check coolant reservoir for oil, which may indicate head gasket failure.
• Examine water pump weep hole for leaking coolant.
• Test radiator cap pressure to confirm it holds proper pressure.
• Flush coolant; inspect for metal particles indicating wear.
• Check for white deposits at hose clamps for slow leaks.
• Inspect heater hoses for bulges or softness.
• Verify thermostat operation during engine warm-up and cool-down.
• Inspect fan or serpentine belt for cracks or glazing.
• Bleed air after coolant change at the system’s high point.
• Inspect overflow tube for blockages that interrupt coolant return.