Operation CHARM
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Porsche
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1989
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928 GT V8-4957cc 5.0L
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Repair and Diagnosis
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Specifications
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Pressure, Vacuum and Temperature Specifications
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Fuel Pressure
Fuel Pressure
Fuel Pressure
(engine stopped)
Fuel Pump bridged
3.8 ±0.2 bar (55 ± 3 psi)
Check value at idle approx.
3.3 bar (48 psi)
Leak test minimum pressure
After 20 minutes
3 bar (43.5 psi)