Fuel pump?

1972-1979 Datsun 620 forums. All 620-specific topics and discussion can be found here.
Ricebiker
Posts: 4
Joined: Thu Sep 01, 2016 3:57 pm
Car: 1977 Datsun 620 pickup, Reg. Cab

Fuel pump?

Postby Ricebiker » Thu Sep 01, 2016 4:11 pm

Recently inherited a 1977 Datsun 620 reg cab. 104,000 miles. Everything was running strong when just today it seemed to become excessively fuel starved. So much so, that I had to pull over and get it towed home. I'm thinking fuel pump. It's the mechanical kind as I'm sure you all know. The truck starts and runs if I hold the accelerator down to the floor, and then just barely runs. And, while I'm doing this, there is a bluish grey smoke spewing from the tailpipe. Maybe oil getting in the fuel line from the cam, into the fuel pump, then into the carb? Possible yeah? Anyway, bypassed the fuel filter and still same problem so it's not that. Anyone know the proper amount of fuel that the pump should be pumping, off hand? I'd like to test that next.
Thanks, any help appreciated. :confused:


Ricebiker
Posts: 4
Joined: Thu Sep 01, 2016 3:57 pm
Car: 1977 Datsun 620 pickup, Reg. Cab

Re: Fuel pump?

Postby Ricebiker » Thu Sep 01, 2016 4:21 pm

I've ordered a fuel pump.
https://goo.gl/photos/VxZNPwNtpWWZh8gp7


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