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How does the oil gauge function? Mine is pegged to the right

Discussion in 'Tech Discussion' started by MisterB, Sep 17, 2019.

  1. MisterB

    MisterB Full Access Member

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    Location:
    Northwest
    First Name:
    AJ
    Truck Year:
    1980
    Truck Model:
    GMC K2500 4X4
    Engine Size:
    350
    My '69 has a brass from the back of the gauge on the dash to the engine. I don't see that on this truck.

    I'm trying to troubleshoot why it doesn't work

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  2. Dmack

    Dmack Full Access Member

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    Location:
    Central OR
    First Name:
    Dave
    Truck Year:
    1983
    Truck Model:
    K20
    Engine Size:
    350
    There is an electrical sending unit below the distributor. Make sure the wire is plugged in.
     
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  3. MisterB

    MisterB Full Access Member

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    Location:
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    First Name:
    AJ
    Truck Year:
    1980
    Truck Model:
    GMC K2500 4X4
    Engine Size:
    350
    Is this it? Looks like it's missing the wire. I'm not seeing a wire dangling anywhere. Where should I be looking, as far as where the wire comes from? [​IMG]

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  4. 1973c10

    1973c10 Full Access Member

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    First Name:
    Don
    Truck Year:
    1973
    Truck Model:
    C10
    Engine Size:
    454
    Yep that is the sending unit

    is that a copper tube behind the spark plug wires ??
     
  5. MisterB

    MisterB Full Access Member

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    Northwest
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    AJ
    Truck Year:
    1980
    Truck Model:
    GMC K2500 4X4
    Engine Size:
    350
    I'm not sure. I'll have to look again. It's kinda hard to reach back there. It's got a 6“ lift and 35" tires. Even on a ladder and with my long arms, it's interesting.

    So where should the wire come from that plugs in that sending unit?

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  6. eskimomann209

    eskimomann209 Full Access Member

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    Location:
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    First Name:
    Marcus
    Truck Year:
    1973
    Truck Model:
    C10
    Engine Size:
    5.3
    When in doubt. Run a new one. But it’ll be coming off the junction box. Find it there and trace it to its end
     
  7. 73c20jim

    73c20jim Supporting Member Supporting Member

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    Location:
    Tombstone, AZ
    First Name:
    Jim
    Truck Year:
    1973, 1973
    Truck Model:
    C20 2WD Custom Deluxe. C10 2WD Base Model
    Engine Size:
    350 CID 195/260 HP Goodwrench crate, 400 CID 2bbl
    I put rags on both fenders and lay 3 2x4s across the fenders. A little ladder to get up, lay stomach on 2x4s. I can easily get to the distributor area.
     
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