M20b25 airlock.

[max]

Hi.
I've been using my car a bit more after I got it MOTed a few weeks ago. It seems to be building a bit of pressure in the cooling system. I did fit a new rad, and it came with a new pipe that goes from the top of the rad to the expansion tank. It is a clean plastic pipe and I just push fitted it, and when it's hot it's leaking from both ends. Should I have put jubilee clips on them? Have I got an airlock?
Cheers, Max

[Mucka]

Do you have the bleed valve on your thermostat housing?

[Jeroen]

Photos?

[max]

I don't think there's a bleed valve. I'll have a look...and take some pics.
Do m20's get airlocks then?