Hissing sound and steam/smoke under hood

2000 CHRYSLER SEBRING
100,400 MILES • 2.5L • V6 • 2WD • AUTOMATIC
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CHANRAHAN
  • MEMBER
  • 5 POSTS
I have a hissing sound and smoke/steam coming from under my hood. Radiator is full and it is not overheating and I cannot quite figure it out. See the picture below the hissing is coming from under the top radiator hose and the steam/smoke (hard to tell). seems to be coming out near the valve cover gasket.
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Jan 30, 2018 at 6:40 AM
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PATENTED_REPAIR_PRO
  • ✓Experienced Mechanic
  • 1,853 POSTS
Either you have two problems or just one and the hissing sound is actually coolant leaking out and being sprayed onto a hot exhaust manifold causing both the hissing sound and the smoke/steam.
I suggest you go over everyone of those hose clamps and make sure they are tight. I do not using a screwdriver, try to fit a 6 point socket and ratchet on those hose clamps, I believe most are 5/16", and if using a ratchet and socket you do not have to go that tight but with a screwdriver it always seems they almost never get it tight enough unless you can really get a good grip on it.
Then if it still leaks, perhaps renting, borrowing or purchasing a cooling system tester, pump up the cooling system and see if you can find the leak that way. Usually that is done with the engine cold.
Feb 2, 2018 at 12:50 AM
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