Georgia Fiero Club Forum

All Things Fiero => General Fiero Discussion => Topic started by: GTRS Fiero on February 24, 2018, 04:35:08 pm

Title: Overflow tank cap gasket?
Post by: GTRS Fiero on February 24, 2018, 04:35:08 pm

I'm curious about the function of the coolant overflow tank cap gasket.  Did the Fiero come with one?  What purpose does this gasket serve, since the cap itself has vents?  The cap does leak fluid.  I've seen coolant bubble out the cap under pressure, but also, if the tank is inverted, the coolant will stream out of the cap.

Title: Re: Overflow tank cap gasket?
Post by: Roger on February 24, 2018, 07:10:08 pm

It came with a 'cork' or 'paper' type gasket.

Title: Re: Overflow tank cap gasket?
Post by: Fierofool on February 24, 2018, 08:00:40 pm

Plastic to plastic doesn't hold very well.  The soft gasket grips both the lip of the tank opening and the inner surface of the cap and helps to prevent vibration from shaking the cap loose. 

Title: Re: Overflow tank cap gasket?
Post by: GTRS Fiero on February 24, 2018, 08:04:13 pm

There is some sort of rubber thing in there.

Title: Re: Overflow tank cap gasket?
Post by: Fierofool on February 24, 2018, 09:15:32 pm

Like Roger said, the gasket was either paper or cork.  I've seen both but I don't know which was original.