1988 Isuzu Truck emissions to much nox

1988 ISUZU TRUCK
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DAVID LYNN
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Engine Performance problem
1988 Isuzu Truck 4 cyl Two Wheel Drive Manual

why
Jul 27, 2010 at 2:54 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Clean out the EGR valve and test it-its job is to reduce the formation oxides of nitrogen-Nox
Jul 27, 2010 at 3:16 PM
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