I posted last week about a bad spark knock in my motor. I rebuilt the
lower end Craknshaft, beaerings, oil pump, I also put on a new double
roller timing chain and gears. Before that I did a tune-up plugs, wires,
rotor, cap and now I still have a slight miss, but I can drive out of
it. I did time it with a light also. Could it be a bad EGR valve? is
there a way to test it?