After doing a bit of research I think I've figured out I have a leak with my upper heater hose as well as the hose below it, pictures below. Based on the pictures do you guys think all I need to do is replace the hoses?

I tried looking on Atkins to see exactly which hoses I need but am having trouble identifying exactly which two I should be buying. Can anyone help?

Atkins Rotary Specialties || Mazda Rotary Parts

Thanks!

 

Looks like the upper brass fitting is leaking around the threads. I'd try replacing it and using teflon tape on the threads. Clean off the deposits and watch to see where it's getting wet. The lower deposits could just be dribble from above.

 

Finally, thank you! I'll do that today, those hoses can be disconnected as-is right? Or is there anything I should be aware of/doing before I disconnect them?

 

The top hose is just overflow - it's not even under pressure. I'd replace the fitting for that one first and see if that solves the problem. If not, wait until the engine is cool, release pressure carefully, and take the bottom hose off and see if the fitting for that has the same problem. If there's a lot of corrosion you might need a pipe thread tap - I think it's US 1/4" NPT from the photo. The lower fitting might be pressed in from the factory - can't tell from picture. If it is and it's leaking from the fitting, you may have to drill it out and replace it with a brass hose barb like the upper fitting.