Two-port Fuel Vapor Canister Recharge/Refurbish

[87gbodydanny]

Man you got down!! 👍🏼

 

[87gbodydanny]

If anyone at home wants to attempt this, and needs any of the 1/4" foam retainer material, hit me up. I got plenty! 🙂

Which foam would this be?

 

[69hurstolds]

Which foam would this be?

The foam under the plastic bottom and the top of the canister. The carbon sits between them. After the bottom is cut off, and everything is removed, the top foam goes in first, then the carbon, then the other foam, the push in plastic retainer, then you glue the bottom ring back on.

Here's the basic construction below. It's important to ensure that there is no slop in the canister carbon. In other words, the canister must be full enough to ensure the vapors are forced to vent into the carbon bed through the upper filter and not bypass the carbon at the top. If not enough carbon is added, that's exactly what it would do. It doesn't have to be crunched in there, but the foam is there to absorb any potential liquid fuel that makes it to the canister, condensed or otherwise. Believe it or not, the canister gains a little weight (milligrams) as the fuel vapors vent to it, and when the engine is started, those vapors get sucked back into the engine, reducing the weight again.

 

[CopperNick]

Yeah, that would be about right. Around here the bottom replaceable foam filters used to be available but not sure anymore if their part number is still good or defunct.


Nick