'90 525i - radiator leaking around bleed screw - new screw so O-ring is good

[notesguy]

1990 525i, 236k miles

Two years ago the bleed screw broke off and the dealer had to "drill" it out and put a new one in. It ran fine until about 2 months ago.

After lots of observations, I see it's leaking around the bleed screw. I thought it might be the o-ring so I replaced the bleed screw - it still does the same thing - little spits of water come from around the bleed screw when it's at operating temp.

Any ideas? Thanks!

[winfred]

look into the hole and see if theres a crack or something where the o-ring sits

[Hallmark]

:

[Mr Project]

Yup, sounds like the housing is cracking around the screw. You could try sealing it all up with permatex or other goop, but you'd be better off replacing the rad.