F250 Superduy, Cranks, has fuel, New fuel pump,
08-26-2016, 04:29 PM
#1
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F250 Superduy, Cranks, has fuel, New fuel pump,
Vehicle cranks, has fuel, has spark, new fuel pump, compression but will not start. I can hear pump I sprayed starter fluid and it doesnt fire what so ever. Spark rules out crank sensor? Its as if the injectors are not firing. Any ideas would be greatly appreciated. Would there be another sensor that would communicate with the pcm that wuold disable the injectors? Any advice would be greatly appreciated.
08-27-2016, 06:02 PM
#2
The fuel injectors are fired by a relay in the PCM completing the circuit to ground. Be sure the PCM module ground is good.
What is the fuel pressure at the fuel rail test port?
Even with a good pump a clogged filter could cause low pressure and a no fire condition.
What year vehicle?
What is the fuel pressure at the fuel rail test port?
Even with a good pump a clogged filter could cause low pressure and a no fire condition.
What year vehicle?
08-28-2016, 02:18 PM
#5
Mark
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If it did not fire when you shot starter fluid into it .. I would think you are missing spark !