Today I tinkered with my first set of carburetors... I wish this engine was fuel injected!
I borrowed a set of vacuum gauges from a friend and connected them in place of my balance hose. In the picture below you can see what the initial vacuum levels were before I touched anything.
I went through four cycles of playing with the idle stop screws and having to shut the engine down to cool off. I wasn't bold enough to attempt adjusting the idle mixture screws. After the fact, I think my idle mixture screws do need to be adjusted. When I adjusted the idle stop screws so the vacuum pressures matched, one of my EGT would be significantly higher than the other. I ended up adjusting the idle stops so that the EGTs were very close to each other but the vacuum readings were off by about 2".
HPower recommends setting the idle, without prop, to 1450. I unintentional, set my idle to about 1600. It is running pretty smooth at this speed and isn't causing a sever vibration on my electrical panel.
I will spend some more time balancing my carbs once I get it out to the hanger. I need to focus on finishing the plane.
