After an hour of cruising yesterday, the car (70 Challenger)died and once stopped I realized the electric fuel pump was not running (no noise). 5 - 10 minutes sitting there (looking at fuses) I remembered I had wired in a relay. I swapped the headlight relay with the fuel pump relay and pump started when key turned on (bad relay I figured). I replaced 'bad' relay back into fuel pump, and pump ran (but sounded like it was struggling- hi / low pitch noises).
Since rebuild of car last year, engine has ~500 miles and pump has ~300 miles on it.
The Holley red pump was hot and now worry the pump was kicked out and the relay was ok??
One of my questions--should the gas cap be vented to prevent a vacuum?
AND, has anyone had issues with their electric fuel pump similar to this?
Thanks