V90 L6-2.9L VIN 96 B6304S (1998)
Fuel Pressure: Testing and Inspection
While In the Workshop
Special Tools:
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981 2270
^
981 2273
^
981 2282
^
998 9725
^
999 5011
^
999 5479
^
999 5843
Checking Vacuum Hose to Pressure Regulator
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Disconnect vacuum hose from pressure regulator.
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Check that the hose is not blocked by blowing into it.
If the hose is OK:
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Proceed to: Connecting Pressure Gauge section below.
If the hose is blocked:
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Check hose and connector on the intake manifold, clean/replace.
Connecting Pressure Gauge
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Supplement pressure gauge 999 5011 with nipple 998 9725 and adapter 999 5479 before use.
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Remove safety cap from valve on fuel rail.
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Connect adapter to the valve in its locked position (illustration 1 valve closed).
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Turn cock on pressure gauge 999 5011 to position 3 (the cock should point toward the adapter 999 5479).
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Unlock adapter (illustration 2 valve open).
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Continue with: Starting Fuel Pump.