Larry Ross Posted June 12, 2021 Share Posted June 12, 2021 Hello flyers, My Long-Ez 0-235 Lycoming C2C with an Ellison EFS-3 TB has been giving me a lot of grief. I get normal running conditions up to about 2200 rpm. Further throttle advancement causes missing, rpm drop and engine failure. My guess is somehow there is fuel starvation. The engine and TB had about 700 hrs when the issue started. I’ve exhausted possible causes ie: new plugs, harness and magnetos (it was time) fuel flow, fuel pressure, venting, compression (76-79lbs) and picking the brains of a couple seasoned builder friends and mechanics. This led to removal, partial disassembly and cleaning of the Ellison Tb. There were no visible issues. The diaphragm looked OK. I ordered a Tillotson 451402 suggested to fit an EFS-3A but it was much larger and I’m unable to find a match for the EFS-3’s smaller size. I’ve exhausted trying to contact Steve Glover for servicing or a rebuild. Aero Performance Specialties in Chino Ca said that they no longer are involved in this and didn’t know of anyone that does. I’ve had years of good performance up until now from this unit and am considering a Rotec TB replacement because of the similarities. I’ll admit I’m not up to speed on what may be new out there. I would greatly appreciate anyone’s experience with Rotec and thoughts on alternatives. Thanks Larry Quote Link to comment Share on other sites More sharing options...
Kent Ashton Posted June 13, 2021 Share Posted June 13, 2021 We have talked about rebuilding Ellison’s lately. If you can’t find it with the search feature, I will look it up for you. Quote -KentCozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold Link to comment Share on other sites More sharing options...
Larry Ross Posted June 15, 2021 Author Share Posted June 15, 2021 Thanks Kent I've searched but haven't found anything helpful. Quote Link to comment Share on other sites More sharing options...
Kent Ashton Posted June 15, 2021 Share Posted June 15, 2021 Did you use the search function on this website? You should have found Ellison posts in this page and the next https://www.canardzone.com/forums/topic/18661-kents-long-ez-project/page/25/?tab=comments#comment-75655 Quote -KentCozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold Link to comment Share on other sites More sharing options...
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