hi i have a 1985 rx7 gls-se with the 13b motor that i just picked up for 500 dollars. believe it or not it is in mint shape. now the bad, it starts right up no problem but dies right away. I f i press the gas it runes fine just will not hold the idle. i am new to rx7 and am not sure were to start. i would appreciate any help thanks

 

check the compression on both rotors first I would say

 

thanks I'll try that first

 

Lots of good info in the FAQ sticky 3rd thread at the top of the main page. Here is the GSLSE idle problem article.
http://mrmazda.no-ip.com/gslseidle.html