Why is it difficult to put fuel in my '91jeep wrangler?

You will need to drop the tank.

try idle air sensor

sounds like it is flooding the carb, by putting a fuel pressure reg on it it will lower the pressure at the carb and stop overriding the float,needle and seat.

Difficult question to answer. The problem could be due to internal wear causing slightly lower compression.
It could also be caused by worn spark plugs, a coil that isn't putting out as much spark as it used to etc.
Could also be caused by a marginal battery, or a starter that still turns the engine but draws enough current (amps) away from the ignition system as to render it less than efficient.
if you see a puff of black smoke when it first starts, you could have some slight injector leakage.
Sensors out of range can also do this by telling the computer that one thing is happening when it isn't ...temperature sensor may tell the computer it is warmer than it really is and the computer will not put as much fuel in there to get it fired up. Manifold air temp sensor can do nearly the same thing.
None of these items are terribly difficult to check using readily avalable tools...a compression gauge, a digital multi-meter and a decent manual like chiltons or haynes for a guide and specifications.
Any followup questions I will be happy to answer if I can!
Good luck!

Hi There,

Had the same thing going on with my '91 Wrangler. After checking what seemed like every other component, I finally pulled the injector rack.

I found all six to be gummed up to some degree. Cleaned them up. put on new o-rings and reassembled.

Fired right up and stayed that way

Mike

It is inside the fuel tank. To replace it you will need to remove the tank. It isn't that difficult with a couple of people and an empty tank.

Hi Dava224 i had the same problem with my 1989 CJ. when it was cold out i would pump the gas pedal 3-4 times before turning the ignition. it puts a small amount of fuel in the motor without stalling it out. it wont start as hard. another good idea is to keep some fuel stabalizer in the tank everytime you fill up. hope this helps

it might be getting to much fuel check the fuel screw

Look inside the vehicle at the firewall where the clutch pedal rod goes into the master cylinder. See if there is fluid running down the inside firewall. Next look at the bottom of the bellhousing to see if fluid has been coming out of it. That will tell you if it's the master or slave cylinder. Most likely it is the slave leaking inside the transmission bellhousing.

Are you putting power steering on the jeep???? If so, you will need a new power steering sector first, than a power steering pump. All of this is easy to do. all of it bolt on.