Im new to rx7, and have some questions about the coolant system.

If you look at the picture below, you will three arrows.

a) Where do i fill coolant? All three?

b) What`s the difference between them?

c) On the cap (pink) it`s says "do not open", is this only when the engine is warm or all the time?

d) I have 2 fds, on one of them the (pink) cap is marked with 1.3 and on the other car its marked 0.9. Whats the difference??

Enlighten me

 

The red one is your overflow, the green is your main, and the pink is your AST, if your gonna fill you can through your over flow, or if the motor is cool the middle one, but the AST i wouldn't worry about that one.
You should look into getting a metal AST though!!

 

Fill the AST (pink) first, then the filler neck (green). Pull the throttle body coolant line off the TB and burp the system good by squeezing the lower radiator hose 8- 10 times or so. Keep filling thru the filler neck until you get some coolant out the TB coolant line. Put it back on and secure it, then fill thru the filler neck again.

The AST and the filler neck caps should both be .9 bar, or 13 psi. The AST is the pressure relief style.

Once you get the coolant system full, add enough (if necessary) to the overflow bottle to bring it to the 'full' mark on its dipstick.

 

yes make sure u burp the system
very important

 

Thanks!