Make Model Spec SYMBOL. 1.0I, 1.2 16V AUTHENTIQUESYMBOL. 1.5 CDI AUTHENTIQUESYMBOL. 1.6 16V AUTHENTIQUESYMBOL. 1.6 16V DYNAMIQUE SYMBOL. 2.0 16V. (15 OPT ALL MODELS)THALIA 1.2 16VTHALIA. 1.4 1.4 16V EXPRESSIONTHALIA. 1.5 CDITHALIA. 1.9D What should my pressure be?