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Fuel pressure problem

Tiny
CROWMAN
  • MEMBER
  • 1994 JEEP WANGLER YJ
  • 4 CYL
  • 4WD
  • MANUAL
94 jeep wrangler 2.5 mpi. Keep loseing pressure. Tested pump. Putting out 39 psiif I clamp return line to tank got pressure run great pressure at around 90 psi as soon as I unclamp line bottoms out to 0 psi lustput pump in any thought signed FRUSTRATED
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Sunday, January 30th, 2011 AT 12:01 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
That's indication of a bad regulator.
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Sunday, January 30th, 2011 AT 12:15 AM
Tiny
CROWMAN
  • MEMBER
  • 3 POSTS
Wich regulator just put 1 on the fuel rail still doing same thing
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Sunday, January 30th, 2011 AT 12:20 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
That's the one that's supposed to be holding it back. If you have 90 when it dead headed and good volume and 0 using the regulator, you have a bad regulator. Make sure you don't have the lines reversed although I don't think that can be done.
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Sunday, January 30th, 2011 AT 12:23 AM

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