Ok so I have now replaced the distributor, still the same. Drove it this morning and after about 45 minutes it starts jumping and wanting to cut off. I removed the gas cap and no effect. After continued driving it will cut off. It can take several attempts to restart. After restarting it may run fine for a mile or maybe only 100 yards and it will act like it has lost fire or gas.
While it was acting this way this morning, I got it home and shut it off and replaced the Ignition Module with a brand new one. Started it back up and it still was running the same way, wanting to cut off after a 1/2mile and then cutting off.
I have replaced the:
Ignition Module (3times)
Disributor with pickup
Any other ideas?
So I think I have solved the mystery.
I got to thinking, (sometimes dangerous) maybe this is not a issue from driving relating to heat. Maybe it is just time that it has run. What else could it be.
You did not think this would be a short answer. heck, I chased it for months.
So I put a clear inline fuel filter at the input of the fuel pump. After running a while it shut off. The fuel was coming into the filter but the filter was dry excepting for the input gas.
The CJ7 has a bypass on the fuel filter that sends extra gas back to the tank. Keeps it from vapor locking.
So I clamped this feed back line closed at the filter, and she kept running.
So I had a lead in the case. I ran a long fuel line into a 5 gal gas can and connected to my fuel pump, with feed back line unclamped and she ran OK.
Solution, replaced tank and sending unit with new filter. Strainer on pickup in tank was stopped up with very fine stuff, and had some trash in the tank.
After a period of time of running this extra stuff would stop gas from getting thru the glogged filter.
Oh, I forgot to add, had to do the tank swap 2 times. Went to a new plactic type tank and it leaked. The new sending unit float had a hole and sank.
2nd tank and sending seemed to have fixed it.
Thanks to all.
Jeeps, you got to love them!!!!!