1988 Isuzu Truck emissions to much nox

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

why
Jul 27, 2010 at 7:54 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Clean out the EGR valve and test it-its job is to reduce the formation oxides of nitrogen-Nox
Jul 27, 2010 at 8:16 AM
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