fuel pressure problem

1994 JEEP WANGLER YJ
4 CYL • 4WD • MANUAL
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CROWMAN
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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
Jan 30, 2011 at 12:01 AM
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WRENCHTECH
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That's indication of a bad regulator.
Jan 30, 2011 at 12:15 AM
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CROWMAN
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  • 3 POSTS
wich regulator just put 1 on the fuel rail still doing same thing
Jan 30, 2011 at 12:20 AM
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WRENCHTECH
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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.
Jan 30, 2011 at 12:23 AM