Hoses
You’ll usually smell something sweet and chemical—that’s coolant leaking. Next comes steam from under the hood and a rapidly climbing temperature gauge. Sometimes it’s just a slow drip, and you might not notice until the engine starts to overheat, but a blown hose can rupture with a sudden hiss, spraying fluid and fogging up the windshield from the outside.
Likely Issues
Cracked or Brittle Coolant Hose
Leaking Heater Hose
Vacuum Hose Leaks
Swollen or Bulging Hose
Collapsed Radiator Hose