hey I in the warranty book you get with the manuals it states that up to a certain point that you only have to pay $100 for a repair of a manufacturer's defect. This happen to me when I got my door crack repaired at 45,000. They told me to pay $100 and they would fix it. But after printing out some info on door crack from this site they opted to do it for free instead. So anyway hope this helps. Now I have to take a good look at my engine to see if I have same problem. Where do you recommend looking for this problem exactly at on the engine.
1998 F150 XLT Reg. Cab, STX, White, 4.2 v6, 4x2, K&N, 3.55, Manik grill gaurd, **** Cepek 100 watt driving lamps, Kenwood mask CD-player, drop hitch, Ford hitch insert, 16x8 Atlas rims w/ 285/75/16 BFG All-Terrains KO to be put on when I get the new retooled bullseye spindles