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Old 02-04-2014, 07:42 PM   #1 (permalink)
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Default 2000 Vulcan Location Fuel schrader valve and Fuel pressure Regulator?

Hello all,

Please see the attached images for the location of Fuel schrader valve and Fuel pressure Regulator in my car.

Q1> Is my annotation correct?

Q2> If my annotation is correct, then why this one doesn't match the original part on my car?
Motorcraft CM-4873 Fuel Pressure Regulator | Auto Parts Warehouse
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2000 Vulcan Location Fuel schrader valve and Fuel pressure Regulator?-wp_20140204_002.jpg   2000 Vulcan Location Fuel schrader valve and Fuel pressure Regulator?-wp_20140204_003.jpg   2000 Vulcan Location Fuel schrader valve and Fuel pressure Regulator?-wp_20140204_004.jpg  
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Old 02-04-2014, 07:58 PM   #2 (permalink)
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Quote:
Originally Posted by q0987 View Post
Hello all,

Please see the attached images for the location of Fuel schrader valve and Fuel pressure Regulator in my car.

Q1> Is my annotation correct?

Q2> If my annotation is correct, then why this one doesn't match the original part on my car?
Motorcraft CM-4873 Fuel Pressure Regulator | Auto Parts Warehouse
See pic attached for Shrader valve. You likely do not have one. If you have pressure sensor and variable voltage effective to the pump to regulate pressure, then the pressure sensor is in the line right where the shrader valve is, and it has electric connection to it.

The shiny disk to the left in the pic is a pulsation damper and this car, '01 uses a pressure regulator inside the fuel filter. One year only deal. No pressure sensor.

-chart-
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Old 02-04-2014, 08:24 PM   #3 (permalink)
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First picture, Yes that is your Schrader Valve on the end of the fuel rail.

Check on Rock Auto for your Pressure regulator.

Image from Rockauto.com
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Last edited by No Bull; 02-04-2014 at 08:35 PM.
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Old 02-04-2014, 08:58 PM   #4 (permalink)
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^+1 with No Bull. Schrader valve, yes. Fuel pressure sensor, yes. Vacuum line, yes. Missing bolt, dunno.
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Old 02-04-2014, 09:18 PM   #5 (permalink)
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There's nothing that should be screwed into that hole. It's open on mine as well.
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Old 02-04-2014, 09:31 PM   #6 (permalink)
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Part from rockauto.com More Information for AIRTEX / WELLS 5G1146 (Thank you No Bull)

Q1> It seems that the part misses one connector(circled on the left of the first image below) or the connector is a different part? Please see attached images for details.

Q2> In order to test the fuel pressure regulator, I need to pull the vacuum line when the engine is ON. Then check for fuel leak. Is that correct?

The reason that I want to check this regulator is that my car needs to prime one or two times in cold weather and then it starts fine. Some people said that it may be caused by a leaking fuel pressure regulator, fuel line injector or a check valve in the fuel pump. So I start to check the easiest one first.
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2000 Vulcan Location Fuel schrader valve and Fuel pressure Regulator?-wp_20140204_004.jpg   2000 Vulcan Location Fuel schrader valve and Fuel pressure Regulator?-getimage.php.jpg  

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Old 02-04-2014, 09:36 PM   #7 (permalink)
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The "missing connector" is where the fuel line from the pump attaches. The item circled in your picture is the quick connect on the end of the fuel line, which is connected to the "missing connector".
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Old 02-04-2014, 09:47 PM   #8 (permalink)
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Quote:
Originally Posted by madscientist View Post
The "missing connector" is where the fuel line from the pump attaches. The item circled in your picture is the quick connect on the end of the fuel line, which is connected to the "missing connector".
Q3> What is the correct way to disconnect the quick connector from the fuel pressure regulator? any tool is required?

Q4> What is the usage of the clip? It has a plastic tie connect with the fuel line.
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Last edited by q0987; 02-04-2014 at 09:50 PM.
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Old 02-04-2014, 09:49 PM   #9 (permalink)
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The prime cycle does not depend on the pressure, it is purely a timed function. Did you check your fuel filter because that could restrict flow over the short time cycle.
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Old 02-04-2014, 09:52 PM   #10 (permalink)
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Quote:
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The prime cycle does not depend on the pressure, it is purely a timed function. Did you check your fuel filter because that could restrict flow over the short time cycle.
Answer: Fuel filter has recently been changed.

I read some post online as follows:

"when the fuel pressure regulator, fuel line injector or check valve leak, the fuel line doesn't hold the pressure. So when you start the engine directly, you will have problems. Then when you prime several times to build the pressure, it is easier to start the engine after that."
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