1992 Mazda Truck Running on 2 cylinders

1992 MAZDA TRUCK
102,000 MILES • 4 CYL • 2WD • MANUAL
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PAULWHEELER42
  • MEMBER
  • 1 POST
Cylinders 2 and 4 are getting spark but are not firing. So far I have replaced the oxygen sensor, plugs, distributer cap, rotor, wires, fuel filter, and fuel injectors (all 4). When I disconnect the wires to cylinders 2 and 4 there is no change. If I disconnect wires to either cylinders 1 or 3, the engine dies. Any idea what I should replace next? The problem started suddenly.
Jul 24, 2008 at 7:35 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Sounds like 2/4 injectors are not pulsing-hook up a noid light and test

Check for power at black and yellow wire at injector harness 2/4 if present-do a continuity test on the light green and black all the way to the computer this is the ground driver circuit.
Jul 24, 2008 at 8:00 AM
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