Charcoal canister

[iboughtatahoe23]

Changed my charcoal canister on my 2014 because it was kicking the pump off every $5 or so. Now it seems to do it like every dollar. I didn’t blow out lines. I don’t have an air compressor. Could have been the pump. Trying another one now

 

[iboughtatahoe23]

It’s hissing as well. The tank

 

[B-train]

Have you tested the purge solenoid under the hood by the fuel rail? If that's not working, then the engine can't remove the vapors stored in the canister and your tank will back up with pressure and click off the nozzle. Do you leave your truck run when fueling, or shut it off?

 

[iboughtatahoe23]

Have you tested the purge solenoid under the hood by the fuel rail? If that's not working, then the engine can't remove the vapors stored in the canister and your tank will back up with pressure and click off the nozzle. Do you leave your truck run when fueling, or shut it off?

Shut it off. And no, I’m not sure how to do all that, testing the solenoid.

 

[Fless]

Have you tested the purge solenoid under the hood by the fuel rail? If that's not working, then the engine can't remove the vapors stored in the canister and your tank will back up with pressure and click off the nozzle. Do you leave your truck run when fueling, or shut it off?

If the purge solenoid is working properly it is closed with the key off (during fueling). If it's open (defective) with ign off it will let fuel vapors into the intake and flood the engine, causing hard starts.

The vent solenoid in the rear of the truck needs to be open when the ignition is shut off, like when fueling. This is where the "clean" air vents to be displaced by adding fuel.

 

[B-train]

It's on the driver side of the engine, by the fuel line. If you remove it, it should be closed and you won't be able to blow through it. If powered with 12v, it should open and allow flow.

I never shut off my vehicle when fueling. You could try that next time because the engine vacuum will suck on the line and reduce pressure in the vapor system as tank level increases with fueling. If the solenoid is failed closed, then you'll have the problem you speak of.

Luckily the purge solenoid is a cheap, easy fix. Just buy an OEM one or the odds of doing it more than once is quite high (speaking from experience).

 

[donjetman]

When the fuel pump clicks OFF, your done. Don't try to force more fuel in.

 

[Marky Dissod]

Changed my charcoal canister on my 2014 because it was kicking the pump off every $5 or so. Now it seems to do it like every dollar.
I didn’t blow out the lines.

Then you'll likely need someone else to blow out your lines for you.

 

[Fless]

I never shut off my vehicle when fueling. You could try that next time because the engine vacuum will suck on the line and reduce pressure in the vapor system as tank level increases with fueling. If the solenoid is failed closed, then you'll have the problem you speak of.

This is an interesting workaround for a faulty evap system, although if the purge valve is commanded open too far the engine will not be happy -- too rich -- and may stall, similar to the behavior when doing a purge and seal test. And it's not always commanded "open" when the engine is running, so YMMV.

 

[iboughtatahoe23]

Then you'll likely need someone else to blow out your lines for you.

I’m just trying to wonder how it got worse