1996 Chevy Blazer Fuel Pressure Regulator Hose Fix

1996 CHEVROLET TRAILBLAZER
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UN_NUYORICAN
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I'm replacing a bad fuel pressure regulator and the manual says there is suppose to be a hose attached to the FPR. When I removed the upper intake manifold, there was not a hose connected to the old FPR...am I missing something? There is a vacuum hose that connects to the top of the intake manifold, but no hose that connects directly to the FPR.
Apr 5, 2006 at 1:43 AM
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KENB79764
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  • 52 POSTS
does the fpr mount to the intake or the fuel rail? if it mounts to the intake, it is the style that draws it's vacuum directly off of the intake where it mounts. also, did the fpr have an electrical connection, if so it is one that is computer controlled. whichever, make sure the replacement matches the old one exactly.
Apr 5, 2006 at 2:11 AM
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UN_NUYORICAN
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[quote:6032da94c1="kenb79764"]does the fpr mount to the intake or the fuel rail? if it mounts to the intake, it is the style that draws it's vacuum directly off of the intake where it mounts. also, did the fpr have an electrical connection, if so it is one that is computer controlled. whichever, make sure the replacement matches the old one exactly.[/quote:6032da94c1]

The FPR mounts to the fuel Rail, which sits under the intake manifold. The replacment is exactly like the original. I suspect the manual is wrong and that there is not suppose to be a hose connected to it. That the vaccum is obtained from the space inside the manifold. No electrical connection.
Apr 5, 2006 at 4:40 AM
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KENB79764
  • ✓Experienced Mechanic
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the manuals usually cover several years and models so that is most likely it.
Apr 5, 2006 at 12:01 PM
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FDLECUYER
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  • 9 POSTS
Your right there's no line to hook on your regulator. It goes behind the fuel injector housing with the metal clip nothing else.
Apr 11, 2006 at 1:20 PM
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Suggested Repair

No vacuum hose is required on this fuel-rail-mounted regulator. Install a matching replacement behind the injector housing and secure it with the metal clip only.

Conversation Summary

The owner of a 1996 Chevrolet S-10 Blazer 4.3L found no vacuum hose on the fuel pressure regulator after removing the upper intake, despite the manual calling for one. The regulator mounts to the fuel rail, has no electrical connection, and the replacement matches the original. Replies explain that manuals often cover multiple years and models, and confirm this regulator has no hose; it is installed behind the injector housing and retained only by a metal clip.

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