No fuel to carburetor

Probably it's really a 258 cu. in. inline six (4.2 liter for all you metric people).

Still have an original mechanical fuel pump?

Have you taken the rubber fuel line loose nearest the carburetor and turned the engine over a few revolutions to see if it gets pumped that far?

I have more!

What do you have this far?

The Medic

Yes, I have turned the engine over and if I take the gas line off the filter it pumps through but when I hook up the filter that has one line going to the carburetor and one going to return back to the gas tank it doesn’t come through. But you can blow through the filter easy? That’s where it doesn’t make sense. Do I have to have a filter with an outlet going back to the tank ?

This is a 1 barrel Carter YF carburetor?

How long has it been since it ran normally?

Disregard the regulator and pressure gauge in my pictures.

Sounds like your float is stuck or the needle and seat is stuck closed.

The carburetor thinks the bowl is full, and won't let more fuel in.

Last pic, whop the carburetor with a rubber mallet a few times about the area where my red arrow points. This is over the float/ needle/ seat on a YF.

Maybe it will shake loose, let's not damage the carburetor with the whopping!

Give it a try.

Good news? Let us know?

That's my '77! (Got a '46 too!)

The Medic

Thank you for all your help! Yes, it is a Carter one Barrel. I had it rebuilt last year. The Jeep hasn’t ran in about 2 years. I broke it down and have been restoring it. I finally got to the point of cranking it, lol. But no luck yet. I’ll try what you said and get back to ya. Thanks again.

We'll keep it up till you are back on the road, Let's not buy other stuff till we know which way to go!

The Medic

I looked at your info again, is this a 232 or a 258?

The Medic

It is a 232 .

Okay, waiting for you to whack it!

The Medic

Okay. So I checked the coil and I’m getting a red spark. It’s a new coil but old condenser and distributor. Do I need to replace them ? Also I looked into a hei distributor that I use my coil with. It has 3 wires. One on each side of the coil and the other is for a tachometer. Have you ever used one ?

It's hard to see what you have from here, what is stock, what has been changed over the years.

How about laying your hood against the windshield frame. Remove the breather and take me a really good, well lit left side/ right side/ overhead pic of the engine.

Maybe a shot of the solenoid, distributor and ignition module.

I'm not much of a fan of changing things that work well.

I am into "upgrading" to a Motorcraft ignition system (which came out with the 1979 CJs) It's so much better than the Prestolite ours came with.

The HEI and other high speed items really don't improve things like you read in those Jeep forums or how your buddies make them sound. I tend to think of these items as things just to brag about.

The upgrades I discuss are actually beneficial or actually make things better.

The HEI and other high speed upgrades really don't help your run of the mill everyday Jeep out much, sure, if we were turning mega RPM's and had money to blow one might somehow benefit.

Keeping things mostly simple is how I like it.

Let's see some pictures then I can maybe make better suggestions.

The Medic

Okay, when I get home this evening I’ll get some and send them to you. Thanks

Here they are. Sorry it to so long.

As it stands now, still not whacked the top of the carburetor?

Your whole engine compartment is so darn clean and pretty! Come make mine look like that!

I found one glitch that is unrelated to the bowl filling up.

It would affect the way the engine runs and tunes up.

The PCV valve is in the front hole. It's job is to remove combustion gasses and water/ moisture from the crankcase.

The carburetor is engineered to also run off of the air that runs through PCV needed for combustion.

In stupid terms, lets say 90% of the air goes through the carburetor's throat and 10% comes through the PCV. All of which is needed to make things run correctly.

As it stands now, the rear hole in the valve cover looks to be closed off. Basically, this would be the same as plugging the PCV hose off as air cannot continue to move through the PCV after a vacuum gets pulled on the engine block. The 10% of air no longer gets to the carburetor and correct tuning is impossible.

The easy fix for this is to simply pipe over to the air cleaner and draw clean fresh air from there. You might modify your air cleaner, or purchase another with the provision. I recommend this way over the next option I show below. (See my pic)

This option basically sticks a filter up out of the second hole. Eventually it gets stopped up or restricted and you are unknowingly back in the same boat you started with, unless you stay on top of things. See my link.

https://www.jegs.com/i/RPC/707/R4870/10002/-1

Let's hear about some fuel getting into the carburetor. I'm pulling for the float being stuck, I'm hoping you did not get a bad rebuild.

If not, we will explore other options to make it work like it should.

Keep on grinning, keep me posted!

The Medic

Lol. Thanks. Okay, I tried whacking it and seeing if the floats were hung. No difference yet. I’ll work some more and get back to ya. I like the pics on your post of the “Jeep consoling the other one lol “.

Let's try this,

Do it outside, no need in risking the burning of your house down!

Let's have a first line of defense, a sopping wet towel to throw over the carburetor if needed.

A second line of defense, a fire extinguisher, I prefer at least a 5 pounder.

Get a small squirt bottle, fill it an inch or so with gas.

Remove the breather.

Let's go maybe 3-4 squirts of fuel into the carburetor's throat.

Attempt to fire it up. If it runs, attempt to nurse it along with the squirt bottle to keep it alive. You might even try to use a mist, not a stream, it's all up to you on how to nurse it.

It might be that after some running, things might work loose inside and your Jeep might run on its own.

If for nothing else, the squirting routine should prove that you do have spark and it is capable of running. Kind of a "make you feel good" thing!

Keep us posted with progress!

The Medic

Okay, I will try it and let you what happens. Thanks.

CJ MEDEVAC is one of our best! Please let us know what you find. We are interested to see what it is.

Sorry, I have not had a chance to try the fuel in the carburetor yet. Was out of town for a week and then we had a death in the family so been pretty much occupied. Would you know where I can yet a condenser for my coil? I have a new coil but I put the old condenser on it and I think it is not working.

Could you send me a picture of the condenser (installed, where it is connected)?

The Medic

I hope you can see the condenser on this photo.

I really like your paint.

Lose the condenser, it is there to keep the static off of your radio, if you will install resistor spark plugs this should eliminate the static. There are other brands, my #1 choice is Champion if I can get them, my second preference is Autolite. Here's a link:

https://shop.advanceautoparts.com/p/autolite-copper-resistor-spark-plug-65/5390222-P?searchTerm=spark+plugs.

I still see your breather hole is capped off on the valve cover, don't forget to make it breathe!

Let's hear some test results soon.

The Medic

Okay, thanks. I haven’t had much time to work on it. We had a death in the family and have been out of town. I’ll let you know about the test as soon as I get them all done. I will fix the breather hole also. Thanks