RCU Forums - View Single Post - UMS Evolution Radial Care and Operation
Old 04-15-2016, 08:57 PM
  #1785  
chorner
 
Join Date: Aug 2014
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Originally Posted by Sessholvlaru
I'm having a bear of a time with mine, maybe someone can help. I bought it used (yeah, I know) and so far the only way I can get it started is to richen the crap out of the low-end. Like four or five turns out. Obviously it runs super rich and leaves a mess behind. It won't even pop at the factory setting of two turns. I'm running specially blended fuel (7% oil, 7% nitro).

I can get the high end pretty set fairly well, but the low end seems like it's all over the place. It pulsates and won't idle at all without glow power.

I checked every plug and they all work fine.

Any thoughts?
As mentioned previously, check your carb. Might need a re-build. The stock carb is *bad*, but not THAT bad. If the high-end at least holds steady and you get decent RPM's then it seems like the engine itself and the valves are set OK I would think.