Hey all! I am new to the forum and have did a lot of searching with lots of helpful tips. I have a 86.5 D21 Z24 FI that idles 1500 or higher. So far I have new plugs wires distributer rotor button and cap. I also have installed a new brake booster and master cylinder per my local nissan dealership. I had brake fluid getting in the booster. I have cleaned the throttle body all new gaskets and o-rings ended up with a high idle. I have cleaned the MAF sensor timing is dead on and idle adjusting screw is all the way out. Youcan turn in to increase but not lower. Any pointers would be greatly appreciated and keep in mind I'm new to this.