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GMC Master
17,989 Answers
- Posted on Mar 02, 2010
Re: Where is the fuel pressure regulator on a 99 gmc...
5.7L And 7.4L Engines
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Disconnect the negative battery cable.
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Relieve the fuel system pressure.
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Remove the upper manifold assembly.
NOTE
If the fuel pressure regulator is to be reinstalled, inspect the
filter screen (if equipped) for contamination. If the filter screen is
contaminated, replace the regulator.
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Disassemble the fuel pressure regulator snap ring retainer.
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Disassemble the regulator assembly and the O-rings.
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Discard the O-rings.
Fig. Fuel pressure regulator
To install:
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Lubricate the new O-rings with clean engine oil.
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Install the backup O-ring, the large O-ring, the filter and the
small O-ring.
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Assemble the regulator with the vacuum tube pointing down into the
snap ring retainer.
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Install the upper manifold assembly.
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Connect the negative battery cable.
Good luck
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