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Originally Posted by PHOENIX
Have you checked the radiator hoses really well?
The heater hoses really well?
Some of them hoses can leak just a little bit and almost impossible to see, but you'll notice the levels dropping.
You may have to get underneath to noticed the hose leaks, if its them.
Sometimes the fluid sits in the little valley under the engine and never gets to the ground. You would be surprised how much fluid can be held there  .
Also the heater hoses can leak at the firewall, when this happens the fluid often travels down the firewall and onto the frame at which point it continues down the frame and might leak onto the ground. |
I'll check the hoses again. The upper and lower are not leaking. Only thing that might be are the ones going to the core itself at the wall.
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Originally Posted by PHOENIX
If it only leaks when the system is pressured (which sounds like your problem) then the fluid could be dripping when you drive but not when you are sitting.
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I've ran it sitting with the thermostat opened to make sure that the air is out of the engine and still does the same thing. Is there a way to unpressure it to where it won't leak?
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Originally Posted by PHOENIX
So your overflow bottle is leaking?
Does the hose from the cap to the bottle go into the bottle all the way?
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It looks like that's the only place where it's leaking. I think it gets hot and the coolant overfills the bottle thus it creates a tiny spot where it leaks out.
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Originally Posted by PHOENIX
Check your water pump weep hole. Its located directly behind the pulley on the bottom. Its just a little hole. When the seal goes bad inside the pump water will leak from here. a lot of the time it only leaks from here when cold and you will notice it on the ground. When teh seal gets heated up it swells and sometimes stops leaking. But will leak again when its cold.
Not your problem, but if you notice a coolant puddle under your truck after sitting all night then its probably your water pump weep hole.
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You're right in that it's not leaking at the weep hole but definately some good info for others.