P parris New member Joined Dec 3, 2011 Messages 2 Reaction score 0 Points 0 Dec 3, 2011 #1 I have a 2008 Sierra 2500 6.6 . Is this a pressurized system or Vented fuel system?? I am putting in a 37 Gal. Aux fuel tank. thanks for any info
I have a 2008 Sierra 2500 6.6 . Is this a pressurized system or Vented fuel system?? I am putting in a 37 Gal. Aux fuel tank. thanks for any info
D dirtclod New member Joined Sep 6, 2010 Messages 161 Reaction score 0 Points 0 Dec 3, 2011 #2 I don't think vented systems are sold anymore. It concerns emissions. But easy enough to check. After a few minutes running engine, loosen fuel cap and listen for a whooosh sound. Whooosh sound = closed system, not vented.
I don't think vented systems are sold anymore. It concerns emissions. But easy enough to check. After a few minutes running engine, loosen fuel cap and listen for a whooosh sound. Whooosh sound = closed system, not vented.
I have a 2008 Sierra 2500 6.6 . Is this a pressurized system or Vented fuel system?? I am putting in a 37 Gal. Aux fuel tank. thanks for any info