No coolant at filler neck?

[but]

I have noticed that when I fill up with coolant,and then drive for a bit,open the radiator cap,and there is no coolant visible at the cap/neck. I fill back up and the same thing. I have no signs of loosing or burning coolant,and im not overheating.

Is this normal or is it something I should take into consideration? I fill it up every now and again.

 

[LiquidX]

Is your overflow tank filled?

 

[citymunky]

^ if the coolant tank is not fill, did you bleed the coolant system the right way? It kinda sound you have trapped air in the system still.

 

[black_eclipse96]

for me my system wouldn't hold pressure, so i replaced my radiator cap... and what do you know its fixed

 

[MichaelSuch]

Sounds like a bad radiator cap.

 

[BrandonDSM]

Similar thing happens with my car. Not leaking or burning coolant, new rad cap, new t-stat, new rad, new water pump. My over flow tank stays full as well. Now when I fill it up, and then drive it, all the coolant is gone from the neck, drive it again, and same thing. After that ill come out, and coolant will be EVERYWHERE, and my over flow tank is empty. And yes, I made sure to burp the coolant plenty.

 

[SmoochDarling]

Similar thing happens with my car. Not leaking or burning coolant, new rad cap, new t-stat, new rad, new water pump. My over flow tank stays full as well. Now when I fill it up, and then drive it, all the coolant is gone from the neck, drive it again, and same thing. After that ill come out, and coolant will be EVERYWHERE, and my over flow tank is empty. And yes, I made sure to burp the coolant plenty.

If you keep adding coolant and there are no leaks, the coolant is escaping somewhere!

This exact escaping act happened to myself... Bad news, your HG is most likely on its way out. As you run your car and the coolant system builds pressure, your coolant is being pushed out your overflow. Albeit, it may be a very small amount of coolant you have to keep adding, but as the HG leak grows more cylinder pressure escapes into your cooling system and pushes coolant out.

Soon your leak will be big enough to start sucking coolant INTO your cylinder, especially on those big steep hills where you use your engine as a brake and really push the in-HG (Vacuum).

Do a coolant system pressure test. Use this opportunity to rework your head and get a good OEM MLS HG.

 

[but]

I fill my overflow about 1/4 the way up,and I only have around 2,000 miles on the build. I am using a brand new cometic head gasket,brand new radiator,hoses,thermostat,and cap. I havent tried burping it yet,but I will give it a try.

My overflow tank is sitting lower by the fender,and it is feeding to the bottom of the tank,its not the oem one.

 

[okcpopeman]

Buncha thieving coolant NINJAS in this thread

 

[BrandonDSM]

If you keep adding coolant and there are no leaks, the coolant is escaping somewhere!

This exact escaping act happened to myself... Bad news, your HG is most likely on its way out. As you run your car and the coolant system builds pressure, your coolant is being pushed out your overflow. Albeit, it may be a very small amount of coolant you have to keep adding, but as the HG leak grows more cylinder pressure escapes into your cooling system and pushes coolant out.

Soon your leak will be big enough to start sucking coolant INTO your cylinder, especially on those big steep hills where you use your engine as a brake and really push the in-HG (Vacuum).

Do a coolant system pressure test. Use this opportunity to rework your head and get a good OEM MLS HG.

Headgasket is barley 3k old. I can confidently say that's not my problem. But thanks for the suggestion.

 

[but]

Resolved. My coolant feed to the turbo was leaking SLOWLY. Thanks again guys!