I hav a 1987 rx7 turbo. it idles a little rough, i read up on it and i found 2 things: replace spark plugs (which helped), i also purchased "Vacuum Hose Spider" from Mazdatrix.com. this is my first rotary and im not exactly sure where this hose set connects. any help will be greatly appreciated

thanks,
kevin

 

a rough idle could be one of a gazillion things. read this to start: http://www.teamfc3s.org/info/articles/idle.html