View Full Version : Radiator cap PSI for 4.9


johnp
06-13-05, 04:35 AM
What is the correct PSI for the Radiator Cap on a 4.9 Deville 1994?
Does it make a huge difference if the cap is a 14 or 16 PSI ?

adalla
06-13-05, 06:59 PM
What is the correct PSI for the Radiator Cap on a 4.9 Deville 1994?
Does it make a huge difference if the cap is a 14 or 16 PSI ?
No it does not. There is a tendency to increase PSI, so if you have a choice go for 16 PSI.