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1996 Mazda 626 Oil Leak

Tiny
DADDYROACH007
  • MEMBER
  • 1996 MAZDA 626
  • 4 CYL
  • FWD
  • MANUAL
  • 160,000 MILES
I am driving my brother's 1996 Mazda 626. Oil is dripping from a sensor installed in the engine block just above the oil filter. It appears the sensor has a collar on it that is meant to grab with a wrench to tighten or loosen. It is a very tight spot (under the air intake behind the block). From under the jacked up car I barely managed to get a small pair of pliers on it to try to tighen it and/or remove it to examine it. I had only a little leverage, but I could not budge it. I do not have a repair manual for this car, and I am not even sure I am doing the right thing. I don't even know what sensor I am trying to remove. Request any help in how best to remove, or even the name of the sensor. Thanks, Sean
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Wednesday, December 8th, 2010 AT 4:16 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
It is the oil sending unit. Chances are it needs replaced and not tightened. It is in a bad spot. I usually can get them from the bottom, but that is when the car is on a lift.
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Wednesday, December 8th, 2010 AT 4:22 PM
Tiny
DADDYROACH007
  • MEMBER
  • 2 POSTS
Thanks, Jacobandnickolas. You got me pointed in the right direction. I was able to remove and replace the oil sending unit; leak is fixed.
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Wednesday, December 8th, 2010 AT 6:48 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Great! Glad it's fixed.

Let us know if you have questions in the future

Take care,
Joe
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Thursday, December 9th, 2010 AT 12:26 AM

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