620 fuel pump

1972-1979 Datsun 620 forums. All 620-specific topics and discussion can be found here.
rabidd
Posts: 3
Joined: Wed Nov 18, 2020 2:35 pm
Car: 1978 Datsun 620 PU long bed

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I have a 1978 620 and the fuel pump is running but will not draw any fuel. It has set for quite awhile. What is the best fuel pump replacement.


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AZhitman
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Posts: 71066
Joined: Mon Apr 29, 2002 2:04 am
Car: 58 L210, 63 Bluebird RHD, 64 NL320, 65 SPL310, 66 411 RHD, 67 WRL411, 68 510 SR20, 75 280Z RB25, 77 620 SR20, 79 B310, 90 S13, 92 SE-R, 92 Silvia Qs, 98 S14.
Location: Surprise, Arizona
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The "best" is an original Nikki pump, but they're hard to come by anymore.

Rock Auto has a suitable replacement unit for the 620, last I checked.

rabidd
Posts: 3
Joined: Wed Nov 18, 2020 2:35 pm
Car: 1978 Datsun 620 PU long bed

Post

Got one from rock auto the original works but would not draw fuel from the tank. Put new one on runs fine draws fuel from a gas can but I cant get anything to come from the tank it has about 4 gallons in it which is fresh gas. Truck set for about 6 years is there a way to get to the tank from the bed?

rabidd
Posts: 3
Joined: Wed Nov 18, 2020 2:35 pm
Car: 1978 Datsun 620 PU long bed

Post

Any Datsun fuel people out there? This is an original 78 California truck that has a fuel shut system would this have anything to do with not being able to draw fuel from the tank?

spanner
Posts: 7
Joined: Wed Jun 01, 2016 5:27 pm
Car: 1973 Datsun 620 pickup

Post

Pump has to run as it rests on cam (assuming it's a manual).
Diaphragm bad ?
I got a replacement for my 73 from Kragen (now Reilley)


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