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I have a 1996 Jimmy and recently replaced the thermostat. I know the raditor drain plug is not too far under the coolant recovery tank, if not that, you may simply have a hole in the tank. From what I've heard, I would use caution using stop leak products, but I am far from an expert. The question is--- is it leaking or just always low on fluid. A leak in the tank is possible but another possibility is the head gasket is allowing compustion pressure to get into the cooling system and blowing it out---check to see if there are bubbles inside the tank when the engine is running ---a sure sign the latter is happening. Jeep recovery tanks often have cracks and leak where the hoses atttach.

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โˆ™ 2009-07-05 14:58:17
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Q: Why would coolant leak from the overflow bottle?
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Does using radiator stop leak cause the coolant in the overflow tank to look like sludge?

Yes, stop leak turns into a thick substance to plug any leaks, when it ends up in the overflow bottle it turns into sludge there.


Should you believe that the little puddle of coolant under the right front of your 1994 corolla is merely overflow?

your Toyota should have an overflow bottle to retain the antifreeze during normal operations. Unless it is overfull, I would be looking for a leak.


You have oil in my coolant overflow?

Head Gasket leak most likely.


What if you pour coolant into the overflow and the coolant instantly pours on to the ground what could be wrong?

A leak. You need to see where it is coming from.


Where would coolant leak from the head gasket?

The coolant will normally leak into the oil or into the cylinder


What does it mean when overflow tank empties itself?

It means that you have a coolant leak. You need to have the system pressure tested for leaks.


Why would you lose coolant in the reserve bottle of a 1995 Civic even when radiator hose pipes are in perfect state?

Most commonly this is due to overheating or a blown head gasket. Overheating causes the coolant to expand, and rush into the resevoir, then overflow it. When cool, the coolant that remains will be sucked back into the engine. A blown head gasket can cause the coolant to enter the firing chambers of the engine then be blown out the tailpipe, or the compression can leak into the coolant area and push the coolant out, or allow the coolant to get into the oil pan.


Why does your 2002 avalanche leak antifreeze overnight only?

You might check your overflow tank for coolant. It might be too full


Why does my Honda ST1100 leak coolant?

hi make sure you have not over filled the expansion bottle as coolent will come from the overflow pipe also its worth checking the two small hoses attached to the thermostat housing unit hope this helps john


How do you find a coolant leak when it is not the radiator or coolant bottle on a 2002 Chevy Malibu?

Have it pressure tested, the intake gaskets have probably failed.


Why would coolant leak from the overflow hose bottle. you changed the water pump and the thermostat and the large hose to the top of the radiator Also the heater is not working now.?

Could be an airlock. try bleeding the system until the heaters are hot. If it keeps doing it the i would suspect cyl head gasket. Hope this helps


Why would you suddenly start smelling coolant in and around your car?

You may have a leak of coolant. Take your car to a shop and tell them you are smelling coolant and may have a leak.


What does coolant spraying all over engine mean?

You have a coolant leak.You have a coolant leak.


What would cause a coolant leak in a Dodge Intrepid?

you have to find where the leak is first.


What would cause a puddle of coolant in the passenger side floor of a 92 Chevy corsica coolant leak?

Leak in heater core


Can brake work cause a coolant leak?

If a coolant leak were caused by brake work, I'd never have that person work on my brakes - ever. Just the brakes, I would think it highly unlikely that it would result in a coolant leak. If they were replacing the master cylinder, then I could see a possibility of someone inadvertently causing a coolant leak, but that would still even be a stretch.


What causes coolant to leak from the overflow hose on your fairly new dirt bike?

Either theres a clog. or clogged on your engine blog or on your hose.


Why does the overflow tube leak on a 1999 Cadillac eldorado when sitting still and running?

First I would let the car sit overnight. The next BEFORE starting the engine, open the hood and inspect the level of the coolant in the OVERFLOW JAR. If level is too high, adjust to proper level ( sometimes the container is accidently OVERFILLED ) . If it continues, extreme temps caused by one of many things is pushing the coolant out of the overflow tube


What could be wrong with your car when the temperature gauge is running hot?

Possibly a leak in the coolant reservoir bottle.


If the soft plugs are bad behind the flywheel will it leak oil?

No. It would leak coolant.


Why would anti freeze leak from exhaust pipe?

A blown head gasket could allow coolant to enter the combustion chamber from the water jacket. The coolant probably is running out the exhaust on first start-up. More often, you will notice the coolant being pumped out of the overflow as the exhaust gas pressurizes the coolant. You should look for this symptom when the engine warms up. Coolant in the exhaust on start-up and then the coolant overpressure overflow from the expansion tank or radiator happening together is almost sure indication of the head gasket failure.


What are the signs of a blown radiator?

You would have a coolant leak.


How do you repair 2002 Chevrolet Suburban leak in the coolant reservoir overflow hose?

Just buy some new section of hose, pretty cheap.


What is wrong when the coolant keeps disappearing but not visibly leaking?

First, if you only look after it has disappeared, there is no coolant left to be leaking Second, coolant will often leak only under pressure, when it expands from being hot. This often happens when the car is moving, so cannot be observed, or escapes as steam. These leaks can be from small cracks in hoses, often under the clips; from pinholes in the radiator body; from under the pressure cap if the seal is badly worn. If some coolant is already missing, the remainder will heat up faster, setting up a viscious cylcle. In vehicles with an overflow bottle, overheated water goes to the bottle, to be sucked back later by the reduced pressure as the water cools again. In extreme overheating (boiling) the coolant can overflow the bottle, so less is available for sucking back later. Also if the hose to the bottle is cracked or loose, the reduced pressure will suck in air instead of water from the bottle. This leads to a situation where the radiator is quite low (so susceptible to fast overheating) while the overflow bottle contains water, so the user thinks there is enough water and never refills it. Coolant can also leak into the engine block, but this will not "keep" happening, as quite a small amount will cause the engine to stop functioning.


Could gas leak into the cooling system if the intake manifold gasket is bad it also has air bubbling inside the water reservoir?

A bad gasket can cause the air fuel mixture to enter the coolant stream, and cause bubbles in the overflow bottle. The gasket needs to be replaced.