1989 Mazda b2600 trobble shoting

1989 MAZDA B2600
180,000 MILES • 4 CYL • 4WD • MANUAL
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MCKINNEY_TERRENCE
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  • 1 POST
my truck keeps missing all the time i've checked the plugs, plug wires, and the oil.
Dec 9, 2009 at 6:39 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Dec 9, 2009 at 7:10 PM
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