Heater stops working, white smoke, no leaks anywhere, overflow bucket full then next day totally empty, exhaust smells like antifreeze, obvious- antifreeze going thru exhaust oil clean no bubble, believe antifreeze not leaking into oil, whats the problem how do I fix car only has 66,000 miles on it, about the heat works then it just shuts off (coincidence when you beep horn heat would turn on) doesn't happen all the time is my problem intake manifold gasket if so where is it located, what about thermostat should I replace
SOURCE: 02 Alero not overheating, no heat
When you say not leaking antifreeze has your coolant level gone down at all? and is it that you have seen no leaks where you park it? What worries me is you can smell it when warming up, have you felt the interior floors to see if damp and do you get any condensation if put blower onto screen, if so then heater matrix is leaking if not could be down to headgasket and/or cylinder head leak.
SOURCE: coolant leak on 96 olds ciera 3.1
Head gasket. The reason for the cold then hot readings is the cooling system is getting gas bound by exhaust gases. A simple intake leak would just make you loose fluid, but wouldn't cause the other symptoms until the coolant was very low. Which leads me to, is the coolant full? The head gasket most of the time will not leak coolant into the oil, but instead coolant will go into the combustion chamber, and exhaust gasses will go into the coolant. You don't see any white smoke until the leak gets extreme. Then shortly after that the engine hydro locks from too much coolant in the combustion chamber. There is a tester that will test your coolant for CO gas. That is the proof of a head gasket leak.
SOURCE: lower intake manifold gasket leaking 02 Olds Silhouette
This is basicly a very time consuming job rather than a physically hard one to complete. In order to replace the gasket you must remove the intake plenum,throttle body, and misc. vacuum hoses. The wiring harness connections must also be disconnected. Finally the intake manifold is exposed. The bolts holding the manifold to the block are removed exposing the leaking gasket. After removing the push rods and placing them in the correct order to be replaced the gasket and sealants can be removed. Finally replace everything in reverse order. Be sure to consult a GM manual for correct bolt torch specs. The correct specs for the manifold bolts usually come with the gasket. Make sure to change your oil a few times after this job in case any coolant entered the block. Also,change the thermostat and the oil seal on the distributor half shaft cap while you have everything off. Good Luck
SOURCE: I have been having problems with my car leaking
I AM LOOKING AT THE RADIATOR CORE LEAKING OR ITS PLASTIC SIDE TANKS.CHECK WATER PUMP WEEP HOLE IT WILL LEAK OUT COOLANT WHEN PUMP GOES BAD IT WILL CAUSE OVERHEATING.CHECK THE CYLINDER BLOCK CORE PLUGS SOMETIMES THEY WILL GO BAD AND LEAK OUT COOLANT.
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