Jeep Won't Run

Sending unit arrived today. No mounting screws, but they did include 2 copies of the same kaiser willys jeep parts magazine, and a jolly rancher and a jawbreaker. Keep the crap, give me the 6 screws!

 

Reading through this post. Looks like the problem has been narrowed down to the fuel pump, with concerns the actuating arm might not be engaging the lobe on the cam shaft. Have you looked inside the opening in the engine to see if the lobe has been worn down? Looking at this from the mechanical interface perspective. If the lobe is worn down, then fuel pump arm will not actuate. If there is no discernable wear, then the fuel pump arm is not contacting the lobe. It has been a long time since I installed my fuel pump on the F134 engine. I seem to recall a bit of resistance while installing, I took this for the arm was engaged with the lobe. Did you notice this while installing your pump?

 

No resistance with new pump.
Yesterday I blew in the hard line from the out side of the fuel pump to the carb. Air blew in fine. It's the fuel pump not having the proper arm.

 

The real question...where do I get the proper fuel pump when the 2nd one won't work?

 

When mounting your new fuel pump, did you use the spacer as noted by jeep peep69 in post #60? The spacer is used to properly align the pump arm with the cam.

 

These people have a reputation as professional and reliable, and had what I needed to rebuild my dual action pump. Maybe they can help you.

https://www.then-now-auto.com/fuel-pump-repair-kits/

 

I used the gasket it came with. There was no spacer with the new one/on the old one. What the spacer look like? Metal?

 

Maybe call Peter debella and see what he has, he may even have the spacer?

https://www.debellajeepparts.com/CJ3B_FUEL_CATALOG.htm

 

I don't have a spacer on mine and it works fine. The spacer is for specific applications. If the engine has a WF carburetor it is not needed.

 

Called and emailed, no answer

 

No.

 

By now you’re not going to find your original pump you tossed out. That would show you the version of pump you need.
-Donny

 

Just a thought, I had the same F134 application and upon dropping the oil pan for cleaning I found the shoe that (road on the cam lobe) that was riveted on the fuel pump arm in the bottom of the pan. ???

 

I don't have the one that was on there to compare with the new one. The new pump never worked.

 

Here is a pic of one I took out of aF134. The arm length from the face of the pump is about 2-1/4”

 

A few years ago I was also having trouble finding a new pump that worked. I too tried a so called "Carter" replacement, I think I ordered from Rock Auto which would not work.

After that I decided to rebuild original pumps with good quality kits. That said I have do have one I got from QTM on one of my Jeeps and it has given good service for 4 years so far.

One of these should work on your engine, unless you have some other issue, or if you are still running vacuum wipers and need a dual action pump.

https://quartertonparts.com/product/fuel-pump-single-action-glass-bowl-style-134l-134f-engines/

 

The spacer for the fuel pump isn't required for single action. Found this on the "theCJ2Apage" site.

Mech Fuel Pump Spacer 2A vs 3A - The CJ2A Page Forums

My understanding, since I have a dual action pump on my F134, the spacer serves two purposes - provide proper clearance and proper function (fuel pressure and vacuum) from the research I have done. Jeepstar I sent you a PM. Did the other fuel pump you ordered come in? If so, did you compare the one you just received with the other one? Any difference.

Here is a website I have used in the past for ordering parts.

Fuel Pumps (willysjeepparts.com)

If you do not get resistance when installing the new pump, it isn't engaging the cam lobe. When inserting the arm into the engine block start at the bottom of the opening and insert all the way in. Then when you lift the fuel pump to align the bolt holes you should feel some resistance. This is the arm engaging the cam lobe. Install and tighten the bolts. Reconnect all the fuel lines, then test to see if you get fuel at the Carb.

This is the part of the arm which engages the cam lobe:

https://1drv.ms/i/s!AiA2DjCZJwqygegUhUxcHHo9GYLOSA?e=lNWHe9