Need Quick Help, Smoke on a BME 102 Twin...>>>
I think I have my one-way valves (or check valves) too far from the mufflers. After I ground test the smoke then switch the pump off, she continues to smoke for a short period of time, maybe 30 seconds or so. Testing the valves off the airplane, they both seal like they should when introducing pressure in reverse.
The question is, how close should the checks be to the mufflers? I have about 8 inches of smoke tubing from the muffler nipples to the checks. I am thinking the residual oil in the lines from the check to the mufflers is what is causing the continued smoke (albeit lightly) after the pump is switched off.
Any thoughts on the location of the checks?