The engine may fail to start due to an electrically shorted sensor. Some of the sensors may internally short and not blow any fuses. A technician may find no spark and no operation of the fuel injectors in the diagnosis. One way a technician may isolate the defective sensor is by disconnecting sensors one by one to see if the engine starts.
Crank but No Start Condition and No Spark on Mazda B4000
Average mileage: 241,235 (204,793–277,678)
19 people reported this problem
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A connector to a sensor to the water pump came loose. Had to reconnected and the truck started.
Has power going to coil but no fire at plugs
im getting fuel but no fire replaced cam sensor but still no start i wonder could the ignition control unit could be bad