I have a 96 camaro that done the same thang.i spent 200 dollars for nothing.all i had to do is take the heatercore hoses off and take an air compressor and blow out the heatercore out.i didnt thank that would have anything to do with it but it worked for me.
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3 ways of loosing the coolant/water search for leak -hole in radiator,hoses at connections or damaged,water pump,heater core and hoses //blown head gasket coolant being burnt will show white smoke out tail pipe ,oil will show milky cocoa color ---//transmission oil cooler lines have internal damage in radiator and transmission has fluid draining
white smoke out the tailpipe and the smell of anti-freeze in the exhaust gas. an engine that over heats either only at highway speeds or town driving, when all other things like, rad cooling fan working properly, thermostat is working properly, no external coolant leaks. the spark plugs may show signs of coolant on them. just some things that are indicators.
It is common to see white exhaust smoke when first starting a car, especially on cooler days. This is generally steam caused by condensation. As the engine warms up and the condensation dissipates the white exhaust smoke (steam) is no longer seen. If excessive white exhaust smoke is present well after the engine warms up, it is necessary to have the car inspected for possible internal coolant leaks. Indicators of an internal coolant leak include billowing white exhaust smoke accompanied by a sweet odor or a low coolant reservoir level. An internal coolant leak can also contaminate the engine oil giving it a frothy, milky appearance. Even small amounts of coolant entering the combustion chamber will produce white exhaust smoke.
One of the main causes of white exhaust smoke and coolant loss is a cracked or warped cylinder head, a cracked engine block, or head gasket failure caused by overheating. A cracked head may allow coolant to leak into one or more cylinders or into the combustion chamber of the engine. Dirty coolant, a poorly maintained cooling system, a low coolant level, or a non-functioning cooling fan can cause engine overheating. In addition, engine wear can eventually cause the gaskets to lose their capacity to seal properly allowing internal coolant loss. Intake manifold gasket and head gasket failures are two of the most common sources of internal coolant loss caused by engine wear.
Never remove the radiator cap or coolant reservoir cap while the engine is hot or running as it can cause serious injury; always allow the car to cool down completely first. Checking for a low coolant level in the reservoir is the first step in determining if coolant loss is causing the white exhaust smoke. If the coolant reservoir is at the proper level but excessive white exhaust smoke is present, a cooling system pressure check is required to determine where, if any, coolant leaks are located. THESE LEAKS WILL CAUSE SEVERE ENGINE DAMAGE! Have the car inspected immediately.
You need to smell the white smoke. If it is still burning coolant, the smoke will smell sweet and it will dissapate fairly quickly. if it stays like a cloud and doesn't have a sweet smell then it is most likley oil. When you changed the head gaskets did you check the heads for flatness? When you say it's not losing any coolant, how are you checking? do you take the cap off the radiator or do you look at the overflow tank? It doesn't take much coolant leaking into the cylinders to make white smoke. I would do a pressure test of the cooling system.
It can be a clogged converter. It can also be a blown head gasket if you are experiencing any of these symptoms. White smoke from the exhaust, overfull oil level, a white foamy substance on the underside of the oil fill cap, loss of coolant with no apparent leak, or air bubbles escaping from the radiator with the cap off engine running.
Black smoke is a sign of an overly rich fuel/air mixture. White smoke is a sign of coolant entering the combustion chamber. Most likely you have a blown head gasket. Other symptoms are loss of coolant with no apparent leak, loss of power, miss, oil level overfull, a white foamy substance on the underside of the oil fill cap. Stop driving this truck until you find the problem. Driving it with a blown head gasket will destroy the engine. A compression test will verify this.
is it leaking on passenger side toward front could radiator ,hose ,water pump . if it smoking white it burning coolant in cylinders head gasket. how often is it loosen coolant it not got hole in the plastic overflow container. check oil make sure not milky white .