cant find coolant leak
#1
cant find coolant leak
My truck has a coolant leak that I cant find. The coolant that is leaking is mostly on the front of the alternator and air cond. pump. I cant seem to find the weep hole on the water pump. Can anyone explain where it is? Any other tips on finding the leak?
#2
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Join Date: Jun 2007
Location: South Texas
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Might want to check the rubber hose that connects to the steel tube. I had a friend thats where his was leaking. A week later the one on the rear under the exhaust manifold started to leak. Just a Thought
#4
Administrator/Jarhead
I had the same problem. Put a hose clamp on the overflow tube that is right under the cap that goes to the overflow bottle... see what that does. I had coolant puddle in the grooves in the airbox, too.
#5
Thanks for the ideas. I will go out and see what I can find right now. I have a air compressor and would like to try the pressure test. Where do I connect the air line and with what fittings? How much pressure is safe?
#6
Remove the cap, stuff a rag in there with the air chuck and let it rip. If you have a pressure reducer on the compressor, set it 10-15 psi. If not, then just be careful, you don't want to over-do it. Let us know how it works.
#7
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Join Date: Nov 2007
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Need a lev-r-vent cap and a piece of hose w/ clamps to adapt where the overflow hose connects on the radiator. Don't go more than 12 lbs. to be safe.
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#8
How does the rag stop the air from coming out? What the heck is a lev-r-vent cap? You guys are kind of confusing me. What if I pull the overflow hose from the overflow bottle and put the air chuck on that?
#9
I pulled to hose from the overflow bottle and put my air chuck on it. I have a good seal at that connection. I have 12-15 psi in there and cant find coolant leaking anywhere. I can see some rusty crud on the engine block just below the water pump, but don't see any fresh fluid. I think it is probably the water pump, but I cant confirm it. I still for the life of me cant find the water pump weep hole. Where the f is it. I have a mirror and flash light and have been looking and feeling around with my hand and cant find it. Whats next?
#11
Thanks, so if I use the lev-r vent I will be able to pressurize the system with the tube from the overflow? And if I use the stock cap the system will not pressurize through the overflow tube? Thanks for the clarification.
#14
How risky is it to pressurize the coolant system? I have a compressor and a regulator on it. The guy at my auto parts store thought it was a bad idea unless I used the system designed for it. I dont see how I can harm anything as long as I keep the pressure low like suggested.
Thats good to know about where the one poster above said about his leaking from the pulley. I would say there is a good chance that is where my leak is as well.
Thats good to know about where the one poster above said about his leaking from the pulley. I would say there is a good chance that is where my leak is as well.