Hello I'm new to the forum. I've recently bought a rx7 fb 1985 with a 12a engine. It ran great but then i had some issues after I replaced a couple of parts. The parts that I replaced include the spark plugs, sparkplug wires, master cylinder clutch, slave, and fuel filter. I've looked through the haynes repair manual and the forums but I couldn't find a situation were the idle was "stable" then after a while it drops. When i turn the a/c on the idle drops so low that it almost stalls the car and also when i rev the engine the idle will go back to normal and then after a while the rpm will drop.

Parts
Sparkplugs: NGK BR8EQ-14 2329
Sparkplug wires: https://goo.gl/F9354K
Clutch master cylinder: https://goo.gl/UK9sCQ
Slave: https://goo.gl/JSDQzt
Fuel filter: https://goo.gl/XHzNdZ

Ive also posted a video on youtube so that you can see what I'm talking about. Any Help or Advise would be highly appreciated. here is the link.
https://youtu.be/bdqaHKMpuGk

 

FIXED: There was a hole in one of my hoses and i tweaked the idle screw