Head Gasket– Your Blazer’s head gasket is designed to fail before permanent damage is done to the block or head when overheating.These hoses can leak coolant from them as they dry out and crack. Radiator Hose– There is a rubber hose that connects the radiator to the thermostat housing, and another one that connects the return from the engine block.If you go looking for it, and your Blazer is equipped with electric fans, treat them like they could run at any time just to be safe. Radiator– A bad radiator can will cause antifreeze to leak onto your garage floor or driveway.It’ll be toward the front of the vehicle, further up than where the A/C condensation would be. It is very common to find that your Blazer is leaking water or (hopefully) coolant from this location. It’ll have a radiator hose attached to it. There is a housing that bolts to the block that holds the thermostat. Thermostat Housing– The thermostat is a small device that acts as a barrier that lets coolant into the engine only when it reaches a certain temperature (usually a bit over 200 degrees). If your Blazer’s cooling system is leaking water or coolant, here are the most common places that it may be leaking from. The problem is that water will freeze in the winter time and cause the engine block, heads, freeze plugs, or some other part of the engine to freeze up.Ĭommon Places Your Cooling System Leaks Water If you, or whoever had the vehicle before you filled the cooling system up with water instead of antifreeze coolant, it could be leaking water. It is possible that your coolant system could be leaking water. If you’ve found coolant on the garage floor, and not leaking water, that’ll be an entirely different set of circumstances causing the leak. This is harmless water, and is nothing to worry about. It will usually produce moisture just behind the rear tires. Your Blazer’s air conditioning system is going to produce water as a product of the cooling process. A lot of water leaking out of the tail pipe is certainly a cause for concern. Water can also leak out of the exhaust as this happens. It is way more noticeable in the winter time when white smoke billows out of your exhaust pipes. This is completely normal and should not be cause for alarm.Įxhaust System– Your Blazer’s engine creates steam as part of the combustion process. Fifteen minutes on a hot day can be enough to get a trail to the rear wheels. If you there is a big puddle of water under the vehicle, it may be because it was left running in place for a while. Here are the most common reasons that water may leak from your vehicle (not coolant, that is covered below).Īir Conditioning System– Your Blazer’s A/C system leaks water directly underneath the engine bay as a byproduct of its operation. There is a section further down the page with common radiator leak causes, if it’s coolant that you found has leaked from your Blazer. If it is engine coolant, it’ll be coming from different places than water typically will, and will need to be addressed separately. It might not seem possible to determine the color of the liquid in question, but a paper towel allowed to soak up enough coolant definitely will begin to show pigment. Coolant is sweet smelling and is typically orange, green, or pink. If you are trying to figure out if your Chevy Blazer is leaking water, the first thing we need to do is determine if you have coolant or water underneath of the vehicle. It really depends on where you’ve found it, and if it is really water. If your Chevy Blazer is leaking water, it could mean a few different things are happening.
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