It's not a canister. I broke the old one open and it had this spring in it, thermal type of spring. There was a diaphragm too if I recall. Here's the hose. A vacuum hose routing diagram would really help. Without this mystery gizmo from the 80s of the ford diesel pickup truck world, starting the truck is very hard. It needs the cold timing advance to start. You can start the engine but without the timing advanced its hard on batteries. This thing apparently controlled it. Does anybody know what this thing is called and what one can do to replace it when it burns up, as did mine? It's like out of production by 20 years at this point I am guessing. And yeah, I know I need a newer truck.
Last edited by dirtyBob; 02-10-2019 at 08:23 AM.