hi
my 1600 1992 had a problem with idle droop which i sorted back last year, this time is ticking over nicely then rises to about a 1000rpm then back to 850rpm every 10 seconds or so ,just likeyou had blipped the throttle any ideas greatfully recieved
cheers rog
G’day mate, welcome to the Forum
Sounds like a base idle problem, have a look here
http://www.mx5oc.co.uk/forum/forums/t/823.aspx
ok geoff will try it again, seems like the base idle setting cures loads of things !