I put an end to my Charcoal Canister problems for good! (6 Viewers)

[LS1FJ40]

So, I should be ok with just running an inline fuel filter without a check valve.

I removed my EGR so the VCV isn't active (I should just remove this too...).

The only concern with running this way is there is no way to "vent" like out the bottom of the charcoal canister...

Thoughts anyone?

 

[LandCruiserPhil]

What did you do with the line from the fuel tank?

 

[LS1FJ40]

What did you do with the line from the fuel tank?

The line from the fuel tank is in the top right corner running in to the inline fuel filter which was going to the VCV.

I've changed it now though. I have the line from the tank running to the fuel filter with it venting to the air.

The line from the VCV is not hooked up to anything.

I think I will go back to the charcoal canister and do your method. I had read that thread before. I cut the damn canister open and didn't drill out the BB. Put it al back together with kwik steel. Stupid!

 

[LandCruiserPhil]

The line from the fuel tank is in the top right corner running in to the inline fuel filter which was going to the VCV.

I've changed it now though. I have the line from the tank running to the fuel filter with it venting to the air.

The line from the VCV is not hooked up to anything.

I think I will go back to the charcoal canister and do your method. I had read that thread before. I cut the damn canister open and didn't drill out the BB. Put it al back together with kwik steel. Stupid!

WTF - Are you calling me stupid for not drilling the BB out the first couple times I did it

 

[LS1FJ40]

WTF - Are you calling me stupid for not drilling the BB out the first couple times I did it

Ha! Dude, I had the directions printed out in front of me! I got all excited that I got the lid off and swapped the charcoal. Rolled out the kwik steel and got it sealed back up. Put the plastic cover on and #%&$!!!!

Another day...

 

[HardyDanger]

random question:
Why in fsm for Charcoal Canister inspection, step #15 "drain engine coolant?
Specifically: I just replaced mine with the AC delco part...do I have to drain coolant?

 

[LS1FJ40]

View attachment 1366114 random question:
Why in fsm for Charcoal Canister inspection, step #15 "drain engine coolant?
Specifically: I just replaced mine with the AC delco part...do I have to drain coolant?

That's funny. I was reading through the FSM the other night. I started keeping track of the typos. I counted at least 30 typos before I quit counting.

 

[mct75]

Maybe it's kinda like how they say to disconnect the negative battery terminal before you put air in the tires....

 

[HardyDanger]

I think I answered my own question. Looks like it is part of the next step in diagnosis of emission system...ie procedure for removing and bench testing TVV...

Now, hmmm, I was about to pull out my engine because someone on youtube said I had to replace my PCV....ha....

 

[MDarius]

So if I understand correctly, for CC deletion:
1. The line from the gas tank is intended to allow the tank to vent. By capping that with an inline filter you provide moisture control and maybe slow some evaporation of fuel, or make yourself feel better about polluting. Not judging, just stating the benefits.

2. The line out from the VCV: The port on the side of the engine just under the intake...is just left open?

3. The bottom vent on the charcoal canister that goes "down under", I have no idea what it actually connects to because there's ice and snow outside and I don't care that much to climb under the truck in those conditions, I'd rather just ask. Whatever that's connected to is also just left open to the atmosphere. Is that correct?

Now, I'm not necessarily a proponent of deleting the CC, but I'd like to understand the functionality with other engine components. Recently my check engine light came on with the P0401 code. I knew I had a CC problem because I constantly had pressure in the gas tank. I swapped out the CC for one of the suggested non-OEM substitutes and the check engine light went off and my MPG dropped to 10MPG, and the light came back in about 200 miles. I'm trying to figure out relationships here. I'll do that in another thread so as not to hijack this one though. Thanks.

 

[bryson]

The line from the tank is commonly vented when the CC is removed, but a filter on the end of the line isn't going to stop moisture from entering the system (a paper fuel filter won't stop that), and it may stop some of the evaporation.

The VCV line would need to be capped so you don't introduce unfiltered air into the engine and create a sizable vacuum leak.

The bottom vent on the OEM canister is just that - a vent. It is run into the framerail, but it is open to atmosphere

I'd doubt the P0401 has anything to do with the charcoal canister, as the CC and EGR systems aren't connected to each other as far as I know.

 

[MDarius]

The line from the tank is commonly vented when the CC is removed, but a filter on the end of the line isn't going to stop moisture from entering the system (a paper fuel filter won't stop that), and it may stop some of the evaporation.

The VCV line would need to be capped so you don't introduce unfiltered air into the engine and create a sizable vacuum leak.

The bottom vent on the OEM canister is just that - a vent. It is run into the framerail, but it is open to atmosphere

I'd doubt the P0401 has anything to do with the charcoal canister, as the CC and EGR systems aren't connected to each other as far as I know.

Thanks. i got an aftermarket CC that kind of fits but it's unclear which inlet is for venting from the tank and which is for VCV. It's good to have a better understanding of the functions.

 

[4G63 POWER]

Weird thing. I have pressure in the summer but not winter.

 

[bryson]

Weird thing. I have pressure in the summer but not winter.

Pressure is often caused by heat, so that makes sense to me.

 

[LandCruiserPhil]

If you drill out the CC valve as described in the first post you solve your CC issues along with providing moisture control through the charcoal in the canister.

 

[MDarius]

If you drill out the CC valve as described in the first post you solve your CC issues along with providing moisture control through the charcoal in the canister.

Yeah, that's easier to do if you didn't thow it away. Woops.

 

[JCruse]

Dumb question...

How is the presence, or lack there-of, of the canister detected during an inspection - through emissions, or just visually?

 

[madisonr34]

Just about to ask the Smog question myself. If I drill out the BBs... will I fail smog???

 

[mct75]

Shooting from the hip, but the charcoal canister just vents gasoline fumes into the intake. The tiny change in fueling is compensated for by the O2 sensor and fuel injectors. I wouldn't think the sniffer would know the difference between the two gasolines.

 

[LS1FJ40]

Yeah, that's easier to do if you didn't thow it away. Woops.

I got a spare laying around I can send you. Did you toss the one from your parts truck too? Don't you know you are never supposed to throw anything Land Cruiser related away?!?!