If the motor will not turn over by turning the flywheel or it does not seem to have compression, then your motor needs more than a simple tune-up.
Uma imoto ingeke iphenduke ngokuguqula i-flywheel noma kubonakala sengathi ayinakho ukucindezelwa, khona-ke imoto yakho idinga okungaphezu nje kokucwaninga okulula.