Originally Posted by h2ojeep
I had the "out of fuel" problem when it was not out. Worked for months to find it. Turned out to be many things and the older CJs are seeming to have the problem.
To avoid a lot of explanation here, I will relate you to another thread that covers most of it. Problem may not be what you think.
That link pertains to a 78 CJ, yours is a little newer, so the lines may not be as old, but the other factors could be the problem.
There are some other threads that address the problem as well if you want to search it.
My rubber is all new. I had to drop and clean out the tank when I got it, as it had a rag for a gas cap, and sat that way for years. Lots of water! Thank God for plastic tanks! I took the carb apart, cleaned it out, and ran a boat tank to limp it home.
I'm gonna look for pinched lines today, if I get time, and try sucking on the line that the check valves are hooked up to.
Thanks all for the advice. On a side note, It hasn't happened since I took the valve out of the gas cap yesterday. I'm thinking check valves/line. It is worst after a lot of off road jostling. I bet the check valves are sticking.