1966 Chevy C-10: How to Replace a Fuel Sending Unit

[OzzInter]

Interesting stuff!

I very recently had to fix the fuel pump in a Nissan Pulsar.

The fuel pump, a submersible unit, and the fuel gauge sender unit are all located in the fuel tank.

To get to this combined unit the whole rear seat has to be removed, a cover-plate removed and then the whole unit removed through a hole in the top of the tank.

The problem was a blocked mesh screen on the intake of the pump.

The fuel filter was also blocked. Both problems were traced to water contaminated fuel!

[fastbacks001]

thanx man reall helpfull . im in the process of buying a replacement sending unit on my vw . if you can message me with the tools need and how to connect back up the new one because i also have easy access to the sending unit its under my back seat . . . thank you

[teeter1939]

@fastbacks001 All I used was a couple of standard sockets and a set of flare nut wrenches. Its straight forwards, pop the old one out and the new one (mine was OEM) goes in exactly the same way. It should only have 2 wires, a ground and a hot wire and they're easy to tell apart.

[More350Power]

Love them old trucks. "sol" cracked me up! Sometimes I wonder if the stuff and possibly ethanol damages the sending units. Ive had to change some in recent years where i never had to before.

[OzzInter]

@More350Power

I have been told that Ethanol is "hydroscopic" (attracts moisure)

Consequently moisure, such as internal condensation, is drawn into the fuel.

Modern cars use internally lined fuel metal or even special plastic fuel tanks to combat this problem

Water in fuel may be causing corrosion to your sender units.

[farmall51]

haha i use the same thing for my old tractors . haha love the fuel stick.

[OzzInter]

@farmall51

The Ferguson TE-20 tractors came with a large open ended spanner that had fuel tank measurements marked on it.

Old tractors didn't have fuel gauges; you "dipped" the tank to see the fuel level.

[teeter1939]

@OzzInter There was an aftermarket fuel cap for the Farmall letter series tractors and their McCormick and IH counterparts that had a twisted strip of metal and a cork that went inside the tank. The cork would move on the strip and spin it, which then moved the needle on the fuel gauge that was on the cap. That cost money which most farmers didn't have, so its difficult to find an original one.

I use a stick if the fuel isn't close to a known mark.