Cabriolet V6-2.8L (AFC) (1995)
CHECKING RESIDUAL PRESSURE
Residual pressure 10 minutes after switching off the engine:
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Cold engine: 2.2 bar (32 psi) minimum
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Warm engine: 3.0 bar (44 psi) minimum
NOTE:
Higher pressure for a warm engine is normal and is the result of thermal expansion of the fuel.
If residual pressure is not OK, perform following tests:
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Check pressure tester connections for leaks.
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Check fuel lines for leaks.
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Check fuel pump check valve.
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Check fuel injectors for leaks.
If there are no leaks and the fuel pump check valve is OK:
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Replace fuel pressure regulator.
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Repeat residual pressure test.