Need help with gas gauge on a 70 442 with ralley gauges. Gas gauge has been working fine. I filled up the other day and now i've noticed it still shows fullafter driving several miles. Stopped and filled up again and it hel 10 gal. If you stop hard i can see the needle move but goes back to full. Is ngauge stuck or is it electrical? Thanks,,,

 

Sounds like the float on the sender may be stuck.