Make Model Spec 146. 1.4I 16V TWIN SPARK146. 1.4I 8V146. 1.6 16V TWIN SPARK146. 1.6I 16V JUNIOR. TWIN SPARK146. 1.6I 16V TWIN SPARK146. 1.6I 8V146. 1.6I 8V. L146. 1.7 16V146. 1.7I 16V146. 1.8I TWIN SPARK146. 1.9 TD/JTD146. 2.0 CLOVERLEAF/TI146. 2.0 TD What should my pressure be?