Cj5 dodad question

Ricky B

Ricky B

Wiiide Open
Joined
Mar 20, 2005
Location
LKN - Tha Dirty Mo (Mooresville, NC)
ok so i found this dodad thing on the old 74 cj body and I don't know what it is so i'm trying to figure out if i need to keep it, got a pic below sorry its not up close if need be i can get another tommorow, anyway its cylinder shaped and has a couple male ports on it for some type of hoses i think, anyone know what it is and weather or not i should keep it?
Thanks
 
That might be the liquid check valve for the fuel ventilation system. Its been a while since I messed with mine but here's how I think it works...the fuel tank connects to the bottom of that valve so fuel vapor doesnt build pressure in the tank. The line off the top sends vapor up front to the firewall-mounted charcoal cannister. The 3rd male port is for liquid return back to the tank, I think. I'll bet you could find more info on JU.
 
Well I went out and looked at it and whatever that thing is wasn't used in the fuel system the way it's setup, the feul line from the tank runs to a thing on the front of the motor (2nd picture below) and then to another in line thingy (1st picture below) then from there splits to the front and rear of the holley carb. Now, if i want to i can run the engine how its setup, we did it already, so is the existing system an ok setup since it works?
 
Kids these days! They only know about computers and fuel injection! The first pic is what is known as a fuel filter (few-all fill-ter).:flipoff2: You should probably change that glass one to a metal one as the glass can break and let out the fuel leading to a fire which lets out the smoke. The second pic is a fuel pump. Know you've never seen one like that, but that's how they used to do it. (mechanically not electrically). Odds are the thing in the first pic used to be part of the fuel/evap system that was bypassed by a PO. Contrary to popular myth amongst older people, it doesn't rob horsepower, just keeps the air cleaner. Oh, and dig the cob webs in the second pic.
 
I can certainly appreciate your enthusiasm for your project(s), but IMO, you're in waaaay over your head.

So much goes into building a vehicle from the ground up, that if you're having trouble identifying a fuel filter & pump, maybe now isn't the time in your life to be doing this?

This isn't a slam or anything, but someone other than you is gonna get hurt...
 
I'm gonna have to agree with Rich on this one.
Hopefully you have some experienced help that is going to help you and teach you a little about your rig as you rebuild/build it.

Again I totally support you enthusiasm and would never try to discourage anyone as we need all the "young blood" we can get in this sport to fight the granola-eating, tree-hugging, bird-watching, fungus-protecting, wilderness-labeling crowd. BUUUT if you tackle this project in the curent state it appears now, if feel that you could endanger yourself and anyone who happens to be on the road with you.

Unless of course you are trying to pull everyone's chain and get a three week debate started about battery tech, in which case I have a feeling you would be handled acccordingly:flipoff2:
 
Rick,

That is a charcoal cannister like Grant said. Cj's had them on that side for some reason? It helps vent off fumes from the gas tank. I would recommend buying the haynes books from advance or autozone. Not making fun but these books will help with alot of you questions and show in detail most of the parts you would question. Buy one for the engine/trans in your jeep and for the jeep itself. 15.00 a piece. If you come to the winston/greensboro area e-mail me ahead of time and I'll give you a copy of my old CJ version. It's really a bad time to be learning. I'd sell one of the projects and go for the one more interesting.
 
Tuite said:
The black rubber hoses clamped to the filter and pump are what the gas flows through.
Click to expand...


***Let me apologize before I do this, I don't mean to be an a**hole,... ok yes I do***

1)What is the gas used for
2) Do I need it?
3) How will I know if I have any?


*** OK I will now leave this subject alone and you may go back to your normally scheduled thread***
 
First off, its great your doing a frame off build on a CJ5... keep the jeeps alive!!!

I think what everyone is trying to say is you have a long road ahead of you due to your lack of knowledge about the basic mechanical functions of a vehicle.... BUT THATS OK!!!!.. All i have to say is PLEASE PLEASE I BEG YOU when your working with the fuel system and brake system have someone there that knows what a fuel pump and a fuel filter is, and knows how to hook everything up..... because honestly you doing this project and not being able to identify these BASIC things scares the hell out of me. And it will really piss the people off at uwharrie that you roll down daniel on top of their freshly built rig because you forgot that hose clamp thingy....

Good luck with the build.... Keep going on it, just when you get to the important stuff have some one there that knows whats going on to help you a long.....

because if you just drop the project like some have suggested, you'll never learn... and if you do learn how to do stuff like this, maybe you can give a few of these guys a hand when their rig breaks down on the trail......
 
ShyHiK5 said:
***Let me apologize before I do this, I don't mean to be an a**hole,... ok yes I do***

1)What is the gas used for
2) Do I need it?
3) How will I know if I have any?


*** OK I will now leave this subject alone and you may go back to your normally scheduled thread***
Click to expand...

Ohhh me me I know the answers to these.


1) Cleaning greasy parts.
Works best if smoking at the same time.

2) Not really, but the motor makes more Vroom vroom noises if you do.

3) Well, it is a CJ so the gas gauge ain't gonna work any way, so you can put a stick thingy in the tank thingy and see if it comes out wet.
Or you can run that glass & tube thingie through the passenger compartment so you can "SEE" if you gots any of that gas stuff.

Disclaimer: Not to be taken seriously. Don't try this at home. Side effects may include, nausea, vomiting, burnt face, minor or major explosions, fuel smell, wet britches, crotch crickets, and whore-moan imballance.
If symptoms persist see your doctor or an actual mechanic.
And of course the obligatory - YMMV
 
The first picture is a liquid check valve that is hooked in series from the the rollover check valve coming from the vapor cannister on the firewall, it dumps vapor an fuel residual from carb. back into the fuel tank to complete the closed fuel loop.
 
Thanks for all the info guys, and yea even i thought the fuel neccesity joke was funny too, lol.

Ok one last serious fuel system question: So we've determined the existing setup runs from the gas tank, to the feul pump, throu the filter, and to the carb. Now this setup works as is. If i want to run the engine It will with the way it's setup. So is the charcoal canister neccesary? Or can I just safely run the feul system the way it is setup?
 
the charcoal canister is an emissions control device.. you dont need it to run. actually you dont need it at all im pretty sure since your jeep is old enough to not be emissions tested anymore.
 
Don't mean to hijack.. but what is the cut off year for emissions?
 
So we've determined the existing setup runs from the gas tank, to the feul pump, throu the filter, and to the carb.
Click to expand...
wow, are you serious? that's quite a determination you've made. i don't know that i've ever seen anything quite like that on a vehicle before...
 
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