ZD30 engine not sending fuel when cranking but will when the key is released

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millettepaul

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Hello everyone. I'm having a problem with a ZD30 engine. It will not send fuel while cranking but as soon as you release the key, fuel will be spitting out from the line. can anyone please help?
 
check for interference on the crank sensor.
some people have had worn starter motors, relays and a few other gadgets generate interference on the crank sensor.
i'm guessing here when you let go of the key your killing power to whatever is making the interference and there is enough momentum in the engine to turn over and fire an injection pulse.
 
Might also be the amount of power being drawn from the battery causing the ECU to not start properly, but have enough voltage once the starter is no longer drawing?

Don't jump from another car to try it, just put another battery in and see if that helps.
 

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