Can anyone help with this?
Just got my '84 Falcon XF,
filled her up with $80 of petrol and valvemaster, drove her for a week and thought she is amazing on petrol! the needle hasn't moved!! Needle showed empty when I bought the car, full after filling up.
Now today, week and a half later, the needle started going down rapidly and after about 20Km it was resting on empty again.
So basically the problem is....if there is any petrol in the tank the needle shows full....as soon as the tank is empty the needle drops back down to empty over 20km.
Filled her up again now and wont have time to look until the weekend, but in a week and a half I am driving down to the snowys and I don't really want to be stuck with no fuel!