having just changed my bottom radiator pipe on my Stilo , i want to double check something.

with the engine stone cold , if i remove the radiator cap , there is no pressure which is what I expect.

I have taken the radiator cap off whith a hot and run engine and I get the same . I dont get any "fushhh" sound like I did on my alfa or older fiats?

The car doesn't over heat or take forever to warm up, normally about 1/2 mile . I also double checked the hose clips and sign of leaks there. The temp gauge shows 90. and never moves above.

Am I paranoid?

1.4 owners please let me know before i buy a new radiator cap.

No I don't think there is any air locks . Its more the radiator cap pressure that i think might be suspect.

Originally Posted by Insomnia

Every car i've had has hissed to some degree with the petrol cap so does sound suspect. Does the cap click when you compress it? Usually a sign of a failed cap.

i'm talking about the radiator cap. i do know what you mean about the petrol cap .

i'm going home at 6 and a fast blast on the A3 should bring it up to operating temp !

engine off and see what happens when i open ( carefully ) the cap