2002 ford escape 3.0 174,000 ,miles. it started to hesitate at around 50-60 mph and i replaced the plugs and it then got worse. i replaced the ignition coils test drove it and my dpfe sensor completeley melted. i then came to a conclusion that my cat was clogged. Took it off and it was. So it was late in the day i had it on the rack and nobody was delivering anymore so i welded a staright pipe on it. Guess what?? Didnt make a difference. so i then replaced all my vaccuum hoses still didnt make a difference. i also chaged my injectors. no difference. I am getting 100 miles to a full tank it is terrible.what i have noticed is that when the tank is almost empty it isnt as bad. the snap on solus that i have keeps telling me cylinder 4 and cylinder 6 is misfiring i ran a compression test and it tested ok i dont know where to go from here any advice would be greatly appreciated
hesitation problems 
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