1998 Chevy Tahoe what is wrong

1998 CHEVROLET TAHOE
156,000 MILES • V8 • 2WD • AUTOMATIC
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CHRIS FENDLEY
  • MEMBER
  • 3 POSTS
it has a bad miss to it while you drive down the road and while it is in park it has 50 to52 pounds of perrsure i changed fuel reglater fuel inj. system spark plugs.what could be my promble.
Apr 17, 2009 at 3:14 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Your fuel pressure is way too low should be 60-66psi for a 5.7L engine
Apr 17, 2009 at 7:21 PM
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CHRIS FENDLEY
  • MEMBER
  • 3 POSTS
what could it be after i changed all those parts,could it be the fuel pump
Apr 18, 2009 at 10:23 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the fuel filter and intank pick-up sock if its clogged up-if not replace the fuel pump
Apr 18, 2009 at 10:53 AM
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CHRIS FENDLEY
  • MEMBER
  • 3 POSTS
i will try that THANKS
Apr 18, 2009 at 11:15 AM
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