Mechanics

GAINING AND LOSING SPARK

1991 Ford Ranger • 150,000 miles

Having issues with my truck it's a 1991 ford ranger 2 wheel drive 4.0 liter. I changed the coil pack and spark plug wires. And the ignition modulator. And I still keep losing spark. Could it be from me changing the injectors? Would that cause me to lose spark?
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Fordman82
October 15, 2013.



The injectors shouldn't have anything to do with spark. Have you checked the crank sensor?