Jaguar Repair: poor gas milage, air flow meter, vacuum hoses

Question
im getting about 8mpg the car start good idles alittle rough and rpm is not steady when warm its fine its just using TO MUCH GAS
where do start?
     yeah mine is the same as yours HOWARD thanks3

Answer
You can start by putting some fuel injector cleaner in your tank. Then check all of your vacuum hoses and fuel lines and air and fuel filters. Then check your spark plugs and wires.
If all of them are okay, then take a look at your fuel injectors, air flow meter, fuel pump and other emission controls. Also check your distributor, rotor and cap. I hope that this helps. Sam