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Coolant loss but no leaks

4112 Views 88 Replies 9 Participants Last post by  joeymannero
Hi fellow Alfa lovers !

hope all is well in the world of owning an Alfa, I’m certainly beginning to experience it.

I have a 2.2 JTS petrol with 105,000 on the clock. I use it as my daily driver and recently noticed coolant loss. Did some basic checks ;

No leaks around the cap.
No leaks on the main pipe going underneath the coolant bottle.
No leaks at thermostat or oil cooler.
No leaks at the radiator.
No leaks at the bleed screws.
Car not overheating and stays on 90 dead on
Fan kicks in fine
Took the under tray off and observed with no leaks.
Next day I started it from cold and just let it idle and noticed after the car warmed up that the water level slowly rose all the way up to the top of the coolant bottle and water started spitting out of the little air vent hole at the top. After closer look I could see the top part of the bonnet was covered with coolant and around the brake fluid bottle and top suspension on the right. So it seems the water spits out from the hole. That can’t be right, that hole is to relieve pressure as the cap spring opens up, if I’m not mistaken? I’ve also bought a new cap.

so the dreaded head gasket words started entering my mind, but no oil or water is mixing. I did notice as I watched the coolant bottle at idle that bubbles would enter it every now and then from the bottom pipe. I let the car cool, took off the cap and then used the diy head gasket tester with the blue liquid. Let the car idle and the liquid turned yellow, which says possible head gasket compression leak or coolant contamination.

has anyone experienced this? If water is spitting out the vent hole of the coolant bottle then maybe it is the head gasket on its way? Not sure how much I should trust the tester, but I tried it on my wife’s car and it stayed blue.

Any advice or suggestions would be appreciated.

I’ve tried searching for a smiler issue on here but no one’s seems to have the issue where coolant is being loss from the top of the coolant bottle hole!
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Thanks for the replies guys. It is what it is. Are these engines prone for blowing the head gasket ? I dont want to spend money repairing it if it’s a common occurrence with the 2.2 JTS?
I don't think it is.

But what would it even change if it was common? A blown gasket is a blown gasket.
 

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But just to confirm:

Next day I started it from cold and just let it idle and noticed after the car warmed up that the water level slowly rose all the way up to the top of the coolant bottle and water started spitting out of the little air vent hole at the top. After closer look I could see the top part of the bonnet was covered with coolant and around the brake fluid bottle and top suspension on the right. So it seems the water spits out from the hole. That can’t be right, that hole is to relieve pressure as the cap spring opens up, if I’m not mistaken? I’ve also bought a new cap.
Your coolant wasn't overfilled (above max with a cold engine) ?
In case it was overfilled, what you described could be normal behavior as there was more fluid than capacity with the warm engine.
If it wasn't, then yeah something is definitely not right.


Yeah nevermind, this is all you need to know:
Let the car idle and the liquid turned yellow
 

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Do you have a milky stuff in the oil / underneath the oil cap too? I can see quite a bit of it in one of your photos of the block. Other than that admittedly I'm no mechanic, but it's hard to tell anything else looking at the photos. The gasket does not appear to be visually blown.
 

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Best to buy things like that from autodoc or any of your local reputable car part e-shops. I've personally found that actually prices there are often even lower than on Amazon/eBay where it's very hard to make sure you are getting genuine/good parts.
 
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