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Performance Upgrades - Maintenance - Modifications - Problem Solving - Off-Road - Street Trucks. Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. Featuring H.I. - Human Intelligence.
could possibly be a clogged breather/vent line. do you take it in the mud or water alot? if so check all lines related to the tank/ charcoal canister/vent lines. just check them all for possible clogs or pinched lines
Welcome to this forum! I've moved your thread into the 2001-2005 Sport Trac section. The vent line could be blocked or a vacuum line on the emissions system could be damaged as previously stated.