I'm running an io-360-a1a and twice had to come down due to clogged fuel injectors. It seems that fuel sludge clogs the bleed air hole in the injector. I've seen it, just brown sludge. Now, I've noticed that when I pull the mixture out to stop the engine that fuel pressure remains high unless I relieve it by pushing the mixture back in to drain the fuel into the motor. I've always just pulled the mixture out and left it. I wonder if leaving it out allowed fuel to seep into the injectors slowly, then evaportate and form sludge. I wonder if it would help to get all the fuel out of the line at once while the motor was still hot so it would evaporate more quickly maybe. Just not sure and I'd like to keep it from happening after I get the new motor back. The motor starts to run real rough, typically right after take off, and wont make much power. Doesnt seem to show up during the 1700 rpm ground run. Any ideas?
Pete
Pete