2006 Sentra, jerks to accelarate and struggles to go uphill
My Sentra 1.8S Special edition has about 105,000 miles on it. When I am starting from zero and it is at 10-15mph, it jerks to go beyond that speed. 1st to 2nd gear if you need to talk in terms of manual tranny. But beyond that no problem in speeding upto 50mph or so.
Another thing is, it struggles to go uphill. 30mph is max it can go. Even on flat ground, I feel it isn't going beyond 50mph. In the past, beyond 60mph, it would rattle so I would never go beyond 60.
It has been to a mechanic but he thinks alls good. The car is stock, no modifications, spark plugs are due for change. I was thinking fuel filter may be an issue but could not find its location. It was mentioned at few places, its in the fuel pump. What do I need to check to figure out the problems?
Thanks in advance.