289 Oil Pressure Sending Unit Leaks.

Discussion in '1965 - 1973 Classic Mustangs -General/Talk-' started by 67GreenStang, Oct 17, 2013.


  1. 67GreenStang

    67GreenStang New Member

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    ive removed the unit itself multiple times and put new teflon tape over the threads, still leaks. so i thought the tube coming from the block had worn threads so on my oil change this weekend i replaced the tube. still leaks. am i missing some thing? maybe tighten tighter? in pretty sure it was very tight, maybe i over tightrned? can i remive the sending unit without draing the oil?
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  2. horse sence

    horse sence Please don't call me Mom SN Certified Technician

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    you can remove the unit with out changing the oil. is it the unit its self that leaks?
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  3. 67GreenStang

    67GreenStang New Member

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    yes its the unit that leaks, right at the threads. maybe put a few more wraps of teflon tape than i originaly put. oil wont come spraying out if i take off the unit? im gonna clean it up and make sure its mot leakung from the block threads also but im almost certain its only from the unit.
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  4. MustangMando

    MustangMando Member

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    Loctite 565
    Thread sealant
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  5. 67GreenStang

    67GreenStang New Member

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    only use that, no teflon tape?
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  6. 67GreenStang

    67GreenStang New Member

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    only this sealant, no teflon tape?
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  7. MustangMando

    MustangMando Member

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    I wouldn't use Teflon tape for anything, not even water lines, in my opinion. Just use the sealant and you should be cool.
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  8. horse sence

    horse sence Please don't call me Mom SN Certified Technician

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    that should do the trick.
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  9. tos

    tos Founding Member

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    Are you sure its really coming from the threads. 99 times out of a hundred they will leak from the seam where the sending unit is crimped together unless theres a tiny crack in the tread area. Or just buy a new ons they are not that expensive.
    #9

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