oil pressure gauge not registering

Discussion in 'Oil' started by peregrine, May 31, 2012.

  1. peregrine

    peregrine Member

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    can a gauge go bad?
    i have oil pressure but the gauge is not registering.
    i blew air into it and the needle does not move?
    please help
     
  2. tourbox

    tourbox Senior Member

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    I assume you have an oil line going to the gauge if you could blow air into the gauge? I'm don't recall the the set up on a 77 FLH.Do you also have an oil light?
    By what you're saying I would guess your gauge is bad.On newer FLH's the sending unit has 2 wires on it,1 for light,1 for gauge.There is no oil line to the gauge.Was this a gauge add on in the tappet screen hole?
    tourbox
     
  3. peregrine

    peregrine Member

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    yes there is an oil line to the gauge. i get oil at the end of the line so i know it gets to the gauge. there is no oil light. i just didnt know that the gauge could go bad.
     
  4. peregrine

    peregrine Member

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    the gauge is from a port on the oil pump
     
  5. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

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    Sounds like you have a bad gauge.
     
  6. BUBBIE

    BUBBIE Well-Known Member

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    You need to get a replacement IF the oil is under any pressure and com'n out, it shoulld register.. What is the poundage on the gauge face.... Low number to High number?

    You will want to keep it the same... Modern gauges won't do your bike a lot of good. My thinking is that old of a bike gauge has a top number of 15 or 30 pounds... Those early bikes used a LOW oil pressure, so the gauge Has to be the same to register it correctly... Putting in a 0/100 lb gauge and that would probably not register oil at an idle either.:D

    IF it is running out the line and holding the oil line at a horizontal level and the oil pumps-out at least a 1/2 inch from the tube end at an idle,,,, You have oil pressure...

    signed....BUBBIE
     
  7. Jack Klarich

    Jack Klarich Expert Member

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    Replace the gauge and check the overhead tappet screen
     
  8. peregrine

    peregrine Member

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    thx a lot
     
  9. Jack Klarich

    Jack Klarich Expert Member

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