When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
Probably referring to the schrader valve. Just follow your fuel lines from the rail back toward the front of the car, they'll go down to the left. (If you are standingat the front of the car) About halfway down there will be something that looks kinda like the air valve you use to fill up your tires. That's probably what you're looking for. Its for an secondary fuel source right?