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Fuel Pressure Question

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Old 08-03-2017, 02:05 PM
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Default Fuel Pressure Question
Can someone tell me what the correct fuel pressure should be on a Merc. 500 EFI, idle and under load?
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Old 08-03-2017, 03:21 PM
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38 -40,,,,psi,,,,
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Old 08-04-2017, 04:17 PM
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Yes. with vacuum hose attached. So 38-43 at idle and under load, correct?
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