Hissing sound and steam/smoke under hood

CHANRAHAN

MEMBER
2000 CHRYSLER SEBRING
2.5L
V6
2WD
AUTOMATIC
100,400 MILES

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.

Image (Click to make bigger)

Tuesday, January 30th, 2018 AT 2:40 PM

1 Reply

PATENTED_REPAIR_PRO

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.

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Friday, February 2nd, 2018 AT 8:50 AM