Wanna, should I reseal the cause of the AFC vent which leaked quite a while ago and has since stopped (possibly from my use of veg oil fuel). If so is this doable by me with the pump on the truck? Where exactly is the oring that causes the leak I searched and found several exploded diagram but am unsure which parts to replace. I am also leary about messing with something that is running good for now but I will if it is a bomb waiting to happen. Thanks, Don.

 

These directions are for a different project but cover almost everything you need to get at that o-ring.

http://dens-site.net/Dodge_CTD/Gover...ing/index.html

The only thing not covered is getting the AFC lever on intercooled pumps out of the way.