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  #1  
Old 05-30-2012, 11:47 PM
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Fuel pressure test port

Is there a fuel pressure test port on the 5.4 3V engine? I have a 2004 with that engine and need to find the pressure test port.
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Old 05-31-2012, 12:20 AM
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Look to the passenger side of the engine compartment to find the Schrader valve. Look on the left-top side of the engine to find the fuel rail. On the fuel rail, you'll see the Schrader valve. It usually has a yellow or black cap and looks similar to a tire valve. Unscrew its cap. Your there..
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Old 05-31-2012, 12:31 AM
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Are you sure there is one on the 5.4 3V engine?
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Old 05-31-2012, 12:36 AM
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Not sure what year but I've been told they did away with the schrader valve and now there is a sensor and a diagnostic tool is needed or edge programers (and other) can show fuel pressure..
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Old 05-31-2012, 12:40 AM
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Quote:
Originally Posted by camopaint0707 View Post
Are you sure there is one on the 5.4 3V engine?
Nope, says a 97 in the info. Might wanna change that. My fault tho.
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Old 05-31-2012, 12:44 AM
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Well I wrote 2004 in the actual post. I've seen pictures about the one for the 97 but I've looked at the rails in my 2004 and cannot find a pressure test port.
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Old 05-31-2012, 12:59 AM
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None on a 3v. Take the fuel line off at the filter and T into the line to check
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Old 05-31-2012, 01:36 AM
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The 2004+ use a FPDM to regulate the pressure, not a rail-mounted pressure regulator. If you think you are having fuel pressure issues, check the FPDM for corrosion.
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Old 05-31-2012, 07:40 AM
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I was just trying to find a place to install a fuel pressure sender.
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Old 05-31-2012, 09:12 AM
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Why not just use something like a Scangauge and read it out from the PID?
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Old 06-06-2012, 11:44 PM
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Scan gauge doesn't read FPR
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Old 06-07-2012, 08:57 PM
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Well I got my sender in. Used a t-fitting type deal on the line going into the fuel rail. What is the correct PSI should be around?
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Old 06-08-2012, 08:46 AM
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Fuel pressure varies by design with a FPDM system.

The fuel pressure PID is available with Xgauge.
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Old 06-08-2012, 08:46 AM


 
 
 
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