A couple weeks back I had an issue on the F-150 that I thought was fuel related or a possible fuel pump gone bad. Found out yesterday that it appears the timing belt/chain broke and caused possible engine damage. Short story long is the engine has 137,000 miles on it and the price to replace it with either a used or new one is about $7-8000. To fix the original is upwards of $4000. Keep in mind these totals represent the cost already incurred in towing, replacing fuel pump, etc up to now. I'm curious if anyone can advise me on whether or not to spend the money on new/used engine or take a chance on repairing the old one. Either way a truck that doesn't run is useless but the thought of putting a lot of money in a 6yr old vehicle is a hard pill to swallow. What say ye ?