I have nissan altima 2007 3.5 with 359k miles Cvt transmission/ timing chain
when i accelerate from stop, theres like a hesitation/sputter between 25-35mph After i past 35mph the car accelerates normally. But the feeling is even worse going uphill.
The car has a oxygen sensor code and theres a leak in exhaust manifold which makes the engine sound a little louder but its been like that for years, never had the hesitation problem before.
spark plugs and coils were changed 2 years ago
engine filter was changed recently
car idles fine at around 750rpm
ive used injector cleaners
engine oil and transmission fluid is at correct level.
359k miles
the feeling is even worse going uphill.
Change the fuel filter (if equipped), and then pressure test the fuel pump. Although knowing Nissans, it may only have a fuel strainer inbuilt into the pump assembly.
For further diagnosis, see here - https://carkiller.com/scottykilmer/qa/misfire-4/
