7.3 fuel pressure - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 9 (permalink) Old 09-28-2009, 03:48 AM Thread Starter
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7.3 fuel pressure

i put a fuel pressure gauge in my 7.3 an it keeps it peged at 60 psi should i get a dif gauge or what?

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post #2 of 9 (permalink) Old 09-28-2009, 03:54 AM
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Re: 7.3 fuel pressure

my obs at idle for fuel pressure is 60psi

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post #3 of 9 (permalink) Old 09-28-2009, 04:08 AM
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Re: 7.3 fuel pressure

Should be around 80 before the regulator and 65 after.

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post #4 of 9 (permalink) Old 09-28-2009, 06:41 PM
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Re: 7.3 fuel pressure

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Originally Posted by big bad stroker View Post
i put a fuel pressure gauge in my 7.3 an it keeps it peged at 60 psi should i get a dif gauge or what?

Sounds normal... What are you wanting to see?

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post #5 of 9 (permalink) Old 09-28-2009, 07:39 PM
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Re: 7.3 fuel pressure

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Originally Posted by big bad stroker View Post
i put a fuel pressure gauge in my 7.3 an it keeps it peged at 60 psi should i get a dif gauge or what?
pegged as in it only goes to 60psi? if so you should get a fuel psi gauge that goes to 100psi. 60psi is normal for a stock fuel pump, but you could get it to about 65psi.

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post #6 of 9 (permalink) Old 09-28-2009, 07:47 PM
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Re: 7.3 fuel pressure

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Originally Posted by Lee View Post
Should be around 80 before the regulator and 65 after.
Come again?

The factory system as well as most of the regulated returns keep 65psi before the regulator and dump off excess volume to maintain that pressure and send it back to the tank. Just where is the system at 80psi and how long do you think your electric pump can maintain 80psi?

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post #7 of 9 (permalink) Old 09-29-2009, 04:33 AM
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Re: 7.3 fuel pressure

Ok, I should have said the pump should be capable of around 80 (dead headed) and 65 when regulated. So then a 60psi gauge would always be pegged.

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post #8 of 9 (permalink) Old 09-30-2009, 04:20 AM Thread Starter
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Re: 7.3 fuel pressure

my fuel system is stock an i put a gauge on it mine stays around 70 at wot it will pull down to 50 55 what should i do to make it keep its pressure?

1999 ford super duty ex cab short bed 4x4 dp-tuner f-5 lomp mod,80 econ,100,120 race,140 aggresive 4inch exaust to 6-inch tip non-wastegated housing upgrade from bts di-performance crossover line di-performance fuel tank mixing delete autometer gauges boost,trans,pyro custom made cold air intake.
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post #9 of 9 (permalink) Old 09-30-2009, 04:24 AM
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Re: 7.3 fuel pressure

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Originally Posted by big bad stroker View Post
my fuel system is stock an i put a gauge on it mine stays around 70 at wot it will pull down to 50 55 what should i do to make it keep its pressure?
Your WOT pressure is still good, I wouldn't worry about it.

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