4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Fuel pressure ?

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Old 06-17-2010, 12:58 PM
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slo97
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Default Fuel pressure ?

I checked my fuel pressure today and it was 35 when u turn the key on and 30 at idle this seems low any feed back
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Old 06-17-2010, 01:31 PM
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cliffyk
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Originally Posted by slo97
I checked my fuel pressure today and it was 35 when u turn the key on and 30 at idle this seems low any feed back
Did you disconnect and plug the pressure regulator vacuum line while testing the pressure--if not then 30psi at idle is normal.
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Old 06-17-2010, 01:36 PM
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slo97
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Originally Posted by cliffyk
Did you disconnect and plug the pressure regulator vacuum line while testing the pressure--if not then 30psi at idle is normal.
i did not do that....so since i have normal fp can i run 100 dry shot with out changing the pump
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Old 06-17-2010, 02:37 PM
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Originally Posted by slo97
i did not do that....so since i have normal fp can i run 100 dry shot with out changing the pump
I never said that, and in fact all we know right now is that the fuel pressure at idle seems to be normal.

It takes a lot more than that for a 13-year old engine to handle a 100 shot of NOS...
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