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1998 Nissan Hardbody Bucking on acceleration

Tiny
CHRISRRR
  • MEMBER
  • 1998 NISSAN HARDBODY
  • 200,000 MILES
Hi - my 1998 Nissan Truck Z24 - (4 cylinder) 8 sparkplugs starts fine, idles fine - but when driving and particularly when accelerating it bucks and loses power - when I relax the accelerator is seems fine. If I drive with accelerator minimally depressed it drives on - but the minute I depress to go on the highway or climb a hill it reacts and hesitates and bucks - any thoughts: Has recent tuneup and new fuel filter. Thanks Chris.
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Friday, October 25th, 2013 AT 11:14 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the Mass Airflow Sensor-
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Friday, October 25th, 2013 AT 12:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
As raz said, check the MAF sensor. Also, check to make sure the fuel pressure is within the manufacturer's specs. It may be weak.
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Friday, October 25th, 2013 AT 5:26 PM

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