2021 Discover HSE Inline 6
She usually idles fine since I always turn off the auto stop start feature. It has 55k miles and is well maintained. New battery, PCV diaghram replaced, cleaned the intake all the way to the turbo inlet, new air filters, cleaned MAF sensors, cleared all faults with LR scan tool, etc. Sumbitch if it doesn't periodically stumble all over at idle then catch itself right before stalling and repeat. Could it need simply a throttle cleaning? I sprayed a can of CRC intake cleaner through which helped a lot on performance. Also rans some Amsoil fuel system cleaner through the tank and did an engine oil flush with LiquiMoly. I fear it's likely dirty valves if GDI buildup but am stumped. I know enough to not want to attempt that job myself😁 Any insight would be much appreciated. it runs great otherwise and I love it. Got 30 mpg on one trip running Amzoil in the gear boxes and Liqui Moly in the engine.