Well I have had this problem for a while. I have a 95 mark8 110k. I just did a tune up yesterday it needed one anyway, so I did new plugs, wires, air filter and fuel filter. It does accelerate better but when I press down all the way on the pedal it feels like there is something blocking. At times the check light comes on but I cannot scan it. I don't think its fuel pressure. What do you guys think? Thanks.