So my 81 3.8 has been running fine. let it sit for a week went to drive it today, start up took a bit longer but started up, went into reverse and it died half way down the drive way. thinking i was a bit low on gas i rolled it to a level surface and tried again, it only cranks and cranks. I popped off the air cleaner and didnt smell/see any gas inside from the carb. Im thinking my fuel pump went out? any input would help! thanks!