Dried coolant sometimes on top of rad cap and around the neck

[s13pignose]

Sometimes I notice when popping my hood I see around the radiator cap on top white dried stuff almost like water spots on your car. My first thought is coolant, but why on top of the cap. I do have a cap meant for a z32 but it's the type that has this little metal thing on top looks like a nail head in size. It actually moves. I wonder if coolant is coming through that, if it acts like a pressure release?

Wondering if I should buy an aftermarket 1.1 cap like mishimoto hks or something where the top isn't like the autozone special I got

thanks for suggestions

[fliprayzin240sx]

Maybe you got a leak around the neck?

[s13pignose]

only thing is how it's getting on top of the cap,, I do see it on other things like intake somtimes..but 9/10 times the cap is what it's own.

[S14DB]

z32 cap is a 1.4bar, as good as any. How old is the cap? I don't think the rivet is supposed to move. I found the safe-T caps with the red lever lasts longer then the rivet cap.

[s13pignose]

I thought it was 1.1 cause I remember I wanted to try that than 1.3 because it was less pressure.

[supreme_1]

change your radiator cap. thats most likely the problem

[GSXRJJordan]

change your radiator cap. thats most likely the problem

Yup. Cheap, easy fix - your cap is letting out a tiny bit of steam, which then cools, and the coolant "residue" is what you see.

[s13pignose]

Alright I still got the oem, one so I'll put that on till I find another 1.1...thats better