Coolant Leaks
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Joined: Sep 2017
Posts: 84
Likes: 18
Coolant Leaks
Hello
I have a question or 2 about the pressure cap on the coolant tank. I've noticed that after the coolant reaches normal temp, and I shut the car off, coolant puddle forms under the right side behind the front tire. It's not a lot, just enough to form a small puddle. I also noticed that the heater alternated between blowing hot and cool air. I looked at the coolant reservoir and saw it was empty. So, II removed the cap to add coolant. When I did this, and yes, I know I shouldn't do this with a warm engine, there was no pressure relief from the cap, no coolant blew out. It was just like a "normal" cap being removed with a cold engine. Could the coolant cap have gone bad, which would cause coolant to leak out the overflow when warm / hot? And could this be why there is no pressure on the cap when I take it off? And, finally, could the lack of system pressure cause the heater to run warm air, then cool air?
Specs on my Vette...
2014 coupe, Z51 / 3LT
Dry Sump Oil System
6 speed auto with paddle shift
Crystal Red Tintcoat Metallic with Brownstone Interior
I have a question or 2 about the pressure cap on the coolant tank. I've noticed that after the coolant reaches normal temp, and I shut the car off, coolant puddle forms under the right side behind the front tire. It's not a lot, just enough to form a small puddle. I also noticed that the heater alternated between blowing hot and cool air. I looked at the coolant reservoir and saw it was empty. So, II removed the cap to add coolant. When I did this, and yes, I know I shouldn't do this with a warm engine, there was no pressure relief from the cap, no coolant blew out. It was just like a "normal" cap being removed with a cold engine. Could the coolant cap have gone bad, which would cause coolant to leak out the overflow when warm / hot? And could this be why there is no pressure on the cap when I take it off? And, finally, could the lack of system pressure cause the heater to run warm air, then cool air?
Specs on my Vette...
2014 coupe, Z51 / 3LT
Dry Sump Oil System
6 speed auto with paddle shift
Crystal Red Tintcoat Metallic with Brownstone Interior
Thread Starter
Advanced
Joined: Sep 2017
Posts: 84
Likes: 18
Actually yes. My water temp normally stays around 220, and I've noticed that sine the minor leak started it doesn't any higher the about 170 - 180 or so. It never leaks a lot, just enough to form a small puddle. And once it cools down, no leakage.
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If the new cap doesn't work, take a hard look at the heater hose where it enters the block. There's a black plastic fitting that will crack and leave a small spot on the garage floor behind the rt front tire. Very hard to get eyes on it. If thats leaking you will have to replace the entire hose assembly.
