Looses 100% power after attempt at acceleration after idling & 75% up hills

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Codes P0171 & 0174 Lean Banks 1&2, indicating vacuum leak. Changed all appropriate hoses/lines, fuel filter, air filter, Pcv and harness, changed oil, filter,changed fuel filter which was dirty but not clogged, no leak suspected at intake manifold as it was replaced. Truck ran great after having no power, but only for about 10 miles, then worse than ever. Cut out several times while driving. Shut truck off-waited few mins, started, good for a few miles, then cuts out. Dies at stop and idle. Small hole in fuel tank. Replacing tomorrow.