Started to hear a knocking noise coming from cylinder 7 or 8 when the rpm's get around 2 or 3 thousand. The knocking will not go away until i shift to the next gear. Hopefully it's not a rod knock but I think it is. If so is there anyway that this can be fixed simply by making an adjustment or in a budget-friendly way? It is a bone stock 4.6 L, also is my daily driver and I need it fixed asap but dont really have money for a new motor. Would it possible to pull one off of a crown vic?