I have two DLE 111s. One is a spare with a few hours on it, at best. While flying earlier this year, the one in my Extra backfired and quit. It blew the canister's inlet off and damaged the reed pedals. I replaced the Reeds and soldiered the canister inlet back on. These are the DLE canisters. It flew O.K.for the next two flights.When I got it out last weekend, the engine was frequently dropping off one cylinder until I reved it a bit. I flew it and it quit midair . But the prop bolts were all sheered off and I deadsticked it in.

So, I started trouble shooting. I swapped in the Spare engine which was previously running good and experienced the same problem. One Cylinder would drop out after about a minute of idling. So I replaced the gas, cleaned the fuel filer and tank, checked the voltage from the Smartfly Fiber optic regulated kill switch to the CDI. Voltage was good. There was nothing in the fuel filer. I even checked the Clunk and it was clean and open. Still the second engine was doing the same as the first. I swapped out the CDI's = same problem. I took off the cans and put on the OEM mufflers = same problem. There was nothing else on the plane that was common to the the two engines that had not been checked. I took the engine off the plane. It does the same thing on the test stand. I have cleaned both carbs several times. I even put in a rebild kit.Screen is clean and all orifices were rodded out to ensure they were not plugged. The carbs were soaked in cleaner for a day.

After all this, the left cylinder still drops out after a few seconds of idle. The Plug is showing me that it is wet. I have replaced plugs several times with new ones. The plane will not run correctly at the factory settings.The low speed jet has to be leaned about 3/4 turn to keep the plane running smoothly at mid-throttle. So, I would think it is a carb problem. But I'll be darned if I can find something wrong with either carb and I have rebuilt many carbs successfully. I am going to try a new ignition module and a new carb. If that does not cure this, both Engines are headed for the trash! I do not know what else to do.

Problem is the carbs are on backorder,again. So I spend another summer waiting for parts and troubleshooting engines. This is getting old. Time to start looking for a new hobby.