Make Model Spec MONICA, MING YU. 1.8I, 2.0I (BEIJING -CHINA)SONATA. 17 OPTSONATA. 18 OPTSONATA. 2.0I, 2.4I (BEIJING - CHINA)SONATA. 2.0I, 2.4I 17 OPT (BEIJING - CHINA)SONATA. 2.0I, 2.4I 18 OPT (BEIJING - CHINA)SONATA. BASESONATA. HYBRID What should my pressure be?