Hesitation on acceleration
Is the car giving you a check engine light? If so you will need to take it to a mechanic to check the codes. Some common causes of hesitation are:
Low fuel pressure - caused by a bad fuel pump or fuel pressure regulator
EGR valve - make sure the EGR valve is working properly. You can test it with a vacuum pump and make sure it holds air. Also you could have a plugged EGR passage.
Good luck and keep me posted. Thanks - Tech101
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No check engine lights. Where is the fuel filter located?
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