Hi all, the judder is almost cetainly the fuel pump, you can repair it as mentioned above, but you will need a bit of skill, you might be able to get a pump off a breaker, if you do come back and I will walk you thro whats needed it will probably be easier than the repair. The fuel guage, it weill probably be the sender which measures how high the fuel level is, it is fairly easy to get to it see Hayns manual I have found if you remove it and wiggle the float arm up and down a few times it clears, dirt on the wire coil, will be more obvious when you see it. Anything else.