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  • 1965 - 1973 Classic Mustangs -General/Talk-

289 Oil Pressure Sending Unit Leaks.

  • Thread starter Thread starter 67GreenStang
  • Start date Start date Oct 17, 2013

67GreenStang

New Member
Oct 17, 2013
4
0
2
Phoenix, Arizona
Oct 17, 2013
#1
  • Oct 17, 2013
  • #1
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?
 

horse sence

15 Year Member
Nov 29, 1999
12,254
8,103
233
Wile Coyote's stunt double
Oct 17, 2013
#2
  • Oct 17, 2013
  • #2
67GreenStang said:
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?
Click to expand...
you can remove the unit with out changing the oil. is it the unit its self that leaks?
 

67GreenStang

New Member
Oct 17, 2013
4
0
2
Phoenix, Arizona
Oct 17, 2013
#3
  • Oct 17, 2013
  • #3
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.
 

MustangMando

Member
Jul 16, 2011
107
0
17
Oct 17, 2013
#4
  • Oct 17, 2013
  • #4
Loctite 565
Thread sealant
 

67GreenStang

New Member
Oct 17, 2013
4
0
2
Phoenix, Arizona
Oct 17, 2013
#5
  • Oct 17, 2013
  • #5
only use that, no teflon tape?
 

67GreenStang

New Member
Oct 17, 2013
4
0
2
Phoenix, Arizona
Oct 17, 2013
#6
  • Oct 17, 2013
  • #6
MustangMando said:
Loctite 565
Thread sealant
Click to expand...
only this sealant, no teflon tape?
 

MustangMando

Member
Jul 16, 2011
107
0
17
Oct 17, 2013
#7
  • Oct 17, 2013
  • #7
I wouldn't use Teflon tape for anything, not even water lines, in my opinion. Just use the sealant and you should be cool.
 

horse sence

15 Year Member
Nov 29, 1999
12,254
8,103
233
Wile Coyote's stunt double
Oct 17, 2013
#8
  • Oct 17, 2013
  • #8
67GreenStang said:
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.
Click to expand...
that should do the trick.
 

tos

Founding Member
Apr 27, 2001
896
68
59
Cincinnati Ohio
Oct 23, 2013
#9
  • Oct 23, 2013
  • #9
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.
 
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