Ok so here's the problem.. It's an 03 cobra with kenne bell pushing 17psi. The car doesn't over heat and it runs great and doesn't blow coolant out of the resevoir cap under normal driving. But when I get on it hard and go from say 2nd to the 4th hard under full boost coolant sprays my windshield and it's coming from the coolant resevoir cap it's just pushing right through it. It's getting very annoying. I already replaced thermostat, coolant resevoir tank and a new cap and burped the system. And today I just had a compression and leak down test done and everything was fine so it's not my head gaskets. So I'm wondering could I possibly be lifting a head? And if so wouldn't the compression and leak down test been bad if I am lifting a head? I need help please because this is getting highly annoying
Blowing coolant out of resevoir cap
- Thread starter Camcobra1989
- Start date
did you try a coolant pressure test?
Are you sure it's coming from the engine cooling system and not just the intercooler? I would check to make sure your intercooler pump is working properly. Common problem on these cars and a very easy fix.
If it's definitely coming from the engine cooling system, there might be an air pocket in the system. I'm assuming since you replaced the thermostat and reservoir tank and cap that you had to drain the system. Did you use the crossover tube to refill? Air pockets are also highly common when draining and refilling these cars.
If it's definitely coming from the engine cooling system, there might be an air pocket in the system. I'm assuming since you replaced the thermostat and reservoir tank and cap that you had to drain the system. Did you use the crossover tube to refill? Air pockets are also highly common when draining and refilling these cars.
Yeah I'm 100 percent sure its coming from the engine coolant resevoir and yes I drained the system and refilled properly. I've burped the system quite a few times and I'm 99 percent sure I'm getting all the air out. And like I said I've tried pretty much everything else besides getting a new radiator.. Do you think it's possible that my heads lifting even though I just passed compression And leak down test?
I had the shop pressurize the cooling system when they did my compression and leak down test
Could it possibly be heat soak from my blower causing it?
01cobravortech
Banned
Are you using a the oem plastic radiator tank or you have an aftermarket aluminum tank?
Aftermarket aluminum
Yeah it's the engine coolant tank that's why it's so frusturating
03Snakeb1te
Banned
Im kimd of having the same issue the fluid is not actually coming out like yours, but when i get on the gas a few minutes after i can smell the coolant comin out of the engine, i do have aftermarket tank true furged to be exact i think the cap is not getting a good seal thats why air is escaping, but ur issue is much more complicated i guess,, i also belief i are having problem with the tank it shelf, let us know how it goes..
It was doing it with the factory tank that's why I changed it
01cobravortech
Banned
Have you checked the cooling system for C02 contamination?
Yes checked the coolant and it came back fine. I'm wondering if possibly the heat soak from my blower is causing it? Anybody think that's possible?
Did you reuse the cap ?
Nope brand new cap
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