hello. 2 months ago I inserted bushing in the cylinders due to scuffing, changed the engine pistons to a new one. after this for the first ignition i did not like the sound of car , and is now very worse . What's that sound, what could it be?
Car from the US, Hyundai Elantra MD 2012, 1.8 DOCH G4NB. before repair 5w20 oil poured shell and after repair 5W40. in addition, at the start gives vibration.
I have video and please listen the sound of engine