5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Stock fuel pressure

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Old 11-16-2005, 03:04 AM
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zex92mustang
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Default Stock fuel pressure

what should i read for fuel pressure at idle with stock FPR and pump, and what should it read with vac off the FPR. thanks
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Old 11-16-2005, 08:56 AM
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stanglx2002
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Default RE: Stock fuel pressure

39 psi
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Old 11-16-2005, 03:50 PM
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Default RE: Stock fuel pressure

is that at idle or with no vac
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Old 11-16-2005, 09:20 PM
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Default RE: Stock fuel pressure

anyone anyone
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Old 11-16-2005, 11:16 PM
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stanglx2002
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Default RE: Stock fuel pressure

no vac
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Old 11-16-2005, 11:27 PM
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Default RE: Stock fuel pressure

thanks for the reply with no vac im at 50, do you think its my FPR its a stock one
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Old 11-16-2005, 11:31 PM
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Default RE: Stock fuel pressure

thats to high it needs to be lower
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Old 11-16-2005, 11:32 PM
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Default RE: Stock fuel pressure

do you know what it should be at idle

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Old 11-17-2005, 12:22 AM
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stanglx2002
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Default RE: Stock fuel pressure

you set it at WOT though

idle should be around 32
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Old 11-17-2005, 12:40 AM
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Default RE: Stock fuel pressure

taking the vacum line off it is the same as wot.
at wot there is no vacum.
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