Charcoal Canister 1977 FJ40

[Ztrx]

View attachment 4121111

View attachment 4121112

Took the passenger seat off and replaced one of the old hoses (goes from middle of the tank to vent by gas filler). Looks like the three remaining poorly plugged ports would be the next thing to sort out. I included the picture of the underside of the cover because of the color. I thought the original color was a green so maybe these was cobbled off another rig. I now have a tan exterior, a gray dashboard, blue doors (inside), some flecks of green here and there and this mustard yellow thing.

 

[procomsignathid]

looks like all the vents were capped off w/ bolts... hope your gas cap vents both ways

do you have any of the previous parts that cover the fuel filler next?

 

[Ztrx]

looks like all the vents were capped off w/ bolts... hope your gas cap vents both ways

do you have any of the previous parts that cover the fuel filler next?

I just ordered your product, a charcoal canister and OEM gas cap as suggested. So I'll hopefully button this all up!

 

[Ztrx]

looks like all the vents were capped off w/ bolts... hope your gas cap vents both ways

do you have any of the previous parts that cover the fuel filler next?

 

[Ztrx]

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Here's the scene around the filler neck...

 

[procomsignathid]

Whats going on w that steel bracket? (Bolted to the fender)

 

[Ztrx]

Whats going on w that steel bracket? (Bolted to the fender)

That's a roll bar - not sure what it was designed for but probably not an FJ40...

 

[Ztrx]

looks like all the vents were capped off w/ bolts... hope your gas cap vents both ways

do you have any of the previous parts that cover the fuel filler next?

Is the cover piece necessary? I found some online but doesn't sound like something that fun to spend money on.

 

[procomsignathid]

you could rig up something without the cover, but it does support the vapor separator (as well as protecting it + the filler neck). Id check the classifieds here for folks parting out trucks, you might find something even if it takes some elbow grease to get looking nice

 

[Ztrx]

you could rig up something without the cover, but it does support the vapor separator (as well as protecting it + the filler neck). Id check the classifieds here for folks parting out trucks, you might find something even if it takes some elbow grease to get looking nice

I'd like to do it proper, but will probably have to replace the roll bar - which doesn't appear to be compatible...

 

[procomsignathid]

I had to go back and forth between your pic of the roll bar and my truck (its a 1978), and I believe you're correct, that rollbar is in the way. Here's a pic of mine:

You can also see I'm missing the lower part of the shield (the empty two bolt holes at the bottom), but importantly, the shield supports the evap separator using those 3 M6 bolts there (the one inset in that little hole and the two on the right).

If you don't want to ditch the rollbar for now, you could grab a piece of sheet metal, and shape it to match up to the bolt holes at the top of the tub with the right pattern to support the evap separator + protect the filler neck. You could theoretically position the evap separator wherever your sheet-metal skills would allow. You want the separator above the filler neck ideally.

 

[Ztrx]

I had to go back and forth between your pic of the roll bar and my truck (its a 1978), and I believe you're correct, that rollbar is in the way. Here's a pic of mine:

View attachment 4126279

You can also see I'm missing the lower part of the shield (the empty two bolt holes at the bottom), but importantly, the shield supports the evap separator using those 3 M6 bolts there (the one inset in that little hole and the two on the right).

If you don't want to ditch the rollbar for now, you could grab a piece of sheet metal, and shape it to match up to the bolt holes at the top of the tub with the right pattern to support the evap separator + protect the filler neck. You could theoretically position the evap separator wherever your sheet-metal skills would allow. You want the separator above the filler neck ideally.

Thanks for the picture. Makes sense to have the cover. My metalworking skills are basically cutting flat pieces to length with a disc grinder. I think the roll bar I have will also interfere with a future hardtop install by the looks of it - though I haven't measured it.

 

[85roktoy]

Following… I basically have the same problem with my 77 and sniper. I have the Redline charcoal can but I’m still getting a gas smell inside the cab pretty strong when driving. Guess I need to take the shield off and start inspecting everything.

@Ztrx did you find the problem yet?

 

[procomsignathid]

@85roktoy a couple things to check when you pull back that shield to look at the vapor separator:

Pay special attention to see if any of the hose barbs have broken loose from the body of the separator. This is the most common failure mode for the stock unit, as they are particularly weak right where they connect to the body.

There should also be a check valve connected to the top part of the separator with a short hose (it sits between the output port of the vapor separator and the charcoal canister, and also sits behind the shield). If you do have a check valve, you should be able to blow air through it in either direction (it’s a two-way check valve) but it should be easier to blow towards the canister. The arrow points toward the canister. If you don’t (or need to replace it) you can find one here:

OEM Fuel Vapor Check Valve for '75 to '77 Land Cruiser FJ40 FJ55

OEM fuel vapor check valve for 1/'75 to 9/'77 Toyota Land Cruiser FJ40, FJ55. Part # 90917-10020.

www.cityracerllc.com

Make sure the line between your vapor separator and the charcoal canister is clear of any obstruction/corrosion. If you disconnect the line from the canister, you should be able to blow through it. Also double check that the line is connected to the “tank” port on the canister. If you plug the canister-side and can still blow through it, you have a leak somewhere in the line.

If all those items pass checks, the next thing I would look at is the VSV setup to ensure you’re actually pulling vacuum through the canister when the engine is on.

 

[85roktoy]

@85roktoy a couple things to check when you pull back that shield to look at the vapor separator:

Pay special attention to see if any of the hose barbs have broken loose from the body of the separator. This is the most common failure mode for the stock unit, as they are particularly weak right where they connect to the body.

There should also be a check valve connected to the top part of the separator with a short hose (it sits between the output port of the vapor separator and the charcoal canister, and also sits behind the shield). If you do have a check valve, you should be able to blow air through it in either direction (it’s a two-way check valve) but it should be easier to blow towards the canister. The arrow points toward the canister. If you don’t (or need to replace it) you can find one here:

OEM Fuel Vapor Check Valve for '75 to '77 Land Cruiser FJ40 FJ55

OEM fuel vapor check valve for 1/'75 to 9/'77 Toyota Land Cruiser FJ40, FJ55. Part # 90917-10020.

www.cityracerllc.com

Make sure the line between your vapor separator and the charcoal canister is clear of any obstruction/corrosion. If you disconnect the line from the canister, you should be able to blow through it. Also double check that the line is connected to the “tank” port on the canister. If you plug the canister-side and can still blow through it, you have a leak somewhere in the line.

If all those items pass checks, the next thing I would look at is the VSV setup to ensure you’re actually pulling vacuum through the canister when the engine is on.

This is very helpful for diagnosing it thank you. I will definitely be purchasing the unit from you if it’s faulty.

There is a random buzzing noise coming from that area behind that shield for some time now. It will do it at the most random times even when the vehicle is off too. I was thinking it was that check valve you linked above.

 

[Ztrx]

Following… I basically have the same problem with my 77 and sniper. I have the Redline charcoal can but I’m still getting a gas smell inside the cab pretty strong when driving. Guess I need to take the shield off and start inspecting everything.

@Ztrx did you find the problem yet?

I haven't had any free time lately to work on the cruiser...still following and will update!