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Fuel pump operation.


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#1 drb5721

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Posted 16 November 2017 - 06:02 PM

Hey guys. I am new to the 720 pickups but am versed pretty well in other nissan products. My question pertains to my 83 KC 720 2.4L. I have a fueling issue and want to try to get some insight. Truck isnt getting fuel to the carb. Control box on passenger side looks ok after inspecting solder points. Figured i would take the pump off to see if it works with dorect battery power. When i touch the leads to the battery all i get is one click. Is this normal? Any electric pump i have ever dealt with has a very slight hummm like vibration when operating but most of those are pumps producing 40-120psi of pressure.

Should it just click or should i get something more out of it?

#2 datzenmike

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Posted 16 November 2017 - 07:54 PM

It should have a continuous hum.


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#3 drb5721

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Posted 16 November 2017 - 08:29 PM

I figured as much. Such low pressure made me wonder. Guess ill get another pump and go from there. Thank you. Will report back.

#4 drb5721

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Posted 25 November 2017 - 07:44 PM

Fuel pump is now moving fuel. I can see fuel in the carb through the glass but nothing is coming out when giving throttle. Gonna soak jets with carb cleaner to start

#5 drb5721

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Posted 26 November 2017 - 08:58 AM

Truck runs great! Now to get a clutch so it can be driven.

#6 Stoffregen Motorsports

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Posted 26 November 2017 - 09:36 AM

Nice job.