What should my pressure be? Make Model Spec CARNIVAL. 17 OPTCARNIVAL. 2.2 CRDICARNIVAL. 2.7 V6, 2.9 CRDI VGT, 3.8 V6.CARNIVAL. 2.7 V6, 2.9 CRDI VGT, 3.8 V6. INC GRAND CARNIVALCARNIVAL. EX, EX LUXURYCARNIVAL. LTD