hi to everybody ! I have a 91 honda civic . I have a unstable idle (about 500 rpm play )when the motor run over 1500 rpm about. And from stop position he have a hard time to get on the move... thank you!

 

ummm.... that wording kinda confused me, but ill venture to say it may be a vacuum leak. get a can of carburator cleaner and spray it in the vacuum lines and it should slow the motor down if one is leaking. then just replace the bad lines.