01-22-2026, 02:15 PM
Quick update. I pulled, cleaned, and tested all the fuel injectors and they all tested good. So, I pulled the plenum. It was pretty dirty, so I cleaned it. I adjusted the throttle idle setting in accordance with the engine manual. All working well. I put a small bead of Blue Loctite around the bearing that holds the throttle shaft on the front, let it seep in and wiped away the excess. I did not remove the throttle position sensors.
I re-installed the plenum using new high temp silicone tubes and smoke pressure checked for leaks. Only leak is around the aft bearing between the plenum and the TPSs.
Test run went well. I actually had to adjust the idle up. I don't know which thing I did fixed it but it seems to be better now. I test hover it today and hopefully all will continue to operate normally. If it ever does it again, I will pull the bearings.
I re-installed the plenum using new high temp silicone tubes and smoke pressure checked for leaks. Only leak is around the aft bearing between the plenum and the TPSs.
Test run went well. I actually had to adjust the idle up. I don't know which thing I did fixed it but it seems to be better now. I test hover it today and hopefully all will continue to operate normally. If it ever does it again, I will pull the bearings.