SirRobyn0
Full Access Member
- Joined
- Dec 6, 2019
- Posts
- 6,755
- Reaction score
- 11,402
- Location
- In the woods in Western Washington
- First Name
- Rob
- Truck Year
- 1984
- Truck Model
- C20
- Engine Size
- 305
I'd say it wouldn't be a bad idea. People sometimes think, or maybe I should rephrase, in repair industry before computerization the rule of thumb was the only time we'd replace a canister is if it was leaking vacuum, a pressure problem, or there was a fuel smell tending to be worse with more fuel in the tank(s) and no leaks were found on the fuel lines. If the charcoal in the canister becomes saturated fuel, either from the operator overfilling the tank constantly or from age then the canister won't store the vapors hence if it is a vented canister it might make a fuel smell, but if the canister is vented to the air cleaner housing, it'll never make a smell at least not when the vehicle is running.I need to read through it when I get a few minutes. Been considering changing mine since it's 41 years old
All this basically to say that after 41 years I'd bet the canister is ineffective, but even keeping a ancient canister as long as it's not plugged or cracked, at least your fuel vent system is still mostly a closed system, though in theory if the canister is bad enough moisture could get in, at least there is the volume of the canister where moisture would probably drop out before getting to your tank.
All lot of words to say an old canister ever if worn out is likely better than no canister at all.