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Q: runs ok unless 2500 rpms or more on 1994 Nissan Pickup (D21)

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I have changed my fuel filter but when I get up to 2500 rpms my trucks starts spitting and sputtering bad and if I try to give it more gas completely loses power ? I was told it was my catylitic converter just wondering is ther anything else I could check other than this?
(6) Answers
I HAVE HAD ALOT OF NISSAN HARDBODYS AND IT SOUNDS LIKE YOUR EGR VALVE REPLACE IT AND YOU SHOULD BE FINE. IT WILL FINALLY GET WERE IT WANT RUN AT ALL.
i have the same problem with my 87 pathfinder ive replaced everything and even cut off the catylitic converter and still does the same thing
i have the exact same problem with my nissan, i removed the cat and checked the fuel pressure and i still have the problem, did you ever figure out what the problem was???