hey guys i have a 1990 rx7 N/A and its runs great for the most part the only problem im having is when i come to a stop with my foot on the pedal the rpms drop, but if i take my foot of the pedal at a stop the rpms pick back up to a good idle?

i was thinking possibly vacume leak but am unable to find one, even with my smoke machine? any ideas?

 

What pedal are you talking about? The clutch pedal? Brake pedal?