K 2500 Suburban 4WD V8-5.7L VIN R (1999)
Fuel Pressure Release: Service and Repair
TOOL REQUIRED
J 34730-1A Fuel Pressure Gauge
CAUTION:
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Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.
After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to
reduce the chance of personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch
any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.
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Refer to Battery Disconnect Caution in Cautions and Notices.
1. Disconnect the negative battery cable in order to avoid possible fuel discharge if an accidental attempt is made to start the engine.
2. Loosen the fuel filler cap in order to relieve the tank vapor pressure.
3. Connect the J 34730-1A gauge or the equivalent to the fuel pressure connection.
4. Wrap a shop towel around the fitting while connecting the gauge in order to avoid spillage.
5. Install the bleed hose of the gauge into an approved container.
6. Open the valve on the gauge in order to bleed the system pressure. The fuel connections are now safe for servicing.
7. Drain any fuel remaining in the gauge into an approved container.
