Quote Originally Posted by Patrol'n View Post
Hey guys, so over the past few months amongst a busy work schedule I have fixed a bunch of stuff and worked on the tuning of my RB30, now my Aircon is cold, my oil pressure gauge works, and I have improved my engines operation. I have almost got the fuel use back down under 20 per hundred too, 20.3 at last fill (down from 24-26) so that's going in the right direction at least, got a new carb, replaced the inlet manifold gasket and sorted another vacuum leak.

At the moment I am finding that sometimes my idle speed comes up like when the choke is on, but I have checked the choke butterfly and the choke appears to be working, in so far as the butterfly is fully open once warm. No matter what I do though, when this happens the idle speed stays at about 12-1400 rpm.

Thanks all.
That is the ideal time to check whether it's related to sticking throttle valve(s) by looking at the valves from top.