The book says that on the 74 RX3 there are two idle adjust screwa as well as the main mixture screw, the big one. I say like heck there is,because there are not any besides the big screw.But that shows what I know. will do a compression check tomorrow. runs fine at road speed just wont idle high enough to keep running at stops. and runs lumpy at low speed and bbackfires. ?????? bob This car sat for 20 years. Bob

 

Wow!!! And it runs? Congratulations. I wouldn't believe any rotary engine could sit 20 years and not need to be rebuilt. I hope your compression test turns out good.

 

Yes it runs, took a bit of work, but goes like a bat outa H but it idles like crap.