Join Date: Mar 2012
Location: North Port, Fl
Bronco Info: 88 Bronco 351 C6 33's redhead/saginaw
Something may be clogged. "To avoid the need for priming, the pump is always mounted low-down, either submerged or around the level of the oil in the sump. A short pick-up pipe with a simple wire-mesh strainer reaches to the bottom of the sump' (not my words). Or possibly not enough oil. A bigger cooler plus the hoses for the remote filter require more oil than the 5 quarts. Possibly with the five qts you just filled the hoses and cooler. Bad ol pump, hard to believe.