My engine won't run
I need some help with a 1994 Allegro Bus. We're trying to start the engine and not having any luck. The engine cranks over fine but no start. It has not been started in several months. It has run ...
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Tinstar wrote:gutfelt wrote:
with key on you should hear the prime pump; maybe the prime pump is not activating for the same reason the fuel shut off solenoid is not on my ISL its right on or near the engine as I can hear it running when keys turned on
As best I can tell, there is no electronic fuel pump and the only one is the mechanical pump at the lift pump. I got shut down by rain so when I can I'll take a fuel line loose at the pump and crank it over. Hopefully, I'll get fuel flow.
The lift pump is used on many Cummins engines, but most often problems with the pump are associated with the 5.9 ISB. This pump is used to transfer fuel from the fuel tank to the injection pump (known as the VP44 injection pump). The lift pump runs at all times when the key is on.
