I RECENTLY GOT A 89 5.0L AS MY PROJECT CAR AND NOTICED UNDERNEATH ON THE DRIVERS SIDE THERE ARE 2 - YES 2, AIR VALVE STEMS. JUST LIKE TIRE ONES. DO I MILK THEM? I TRIED TO PUT AIR IN PUT IT SEEMED IT WOULDNT BUILD UP PRESSURE
ANY IDEAS?
These are most likely the schrader valves on your fuel lines. They are what you use to drain the fuel lines or check system pressure. I don't know why you have two, though, these valves weren't consistently located over the years on Foxes... Is one on the return line?