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Fuel pump pressure

 
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Old 01 Jul 2017, 05:01 am
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Default Fuel pump pressure

Ok. On the 2004 and up there is no Schrader valve. Maybe Nitro can advise since he is a professional. Is there an adapter or do you cut the line and splice in a T fitting?
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Old 01 Jul 2017, 05:48 am
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Default Re: Fuel pump pressure

I'll look at the condition of the rail on mine tomorrow when I'm off work. If it looks decent, I'll send it to you free. Upper intake is of so it should only be a 5 minutes project on my end.

Or nitro may have a better idea?
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Old 01 Jul 2017, 06:06 am
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Default Re: Fuel pump pressure

If you just want to check the pressure, there are lots of kits out there that have fittings to allow you to run the gauge in-line while running the vehicle. If you are looking to permanently install a gauge, you can install an older style rail with the schrader valve. That's what I did. Works great, and avoids unnecessary fuel line splices.
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Old 03 Jul 2017, 04:41 am
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Default Re: Fuel pump pressure

Thanks. I was amazed that there was no provision. What were they thinking by removing it? Only makes for potential problems having to splice a fitting in I would think.
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Old 03 Jul 2017, 05:34 am
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Default Re: Fuel pump pressure

My guess is that the rail without the schrader valve was probably cheaper, and the dealer techs would have the adapters needed to connect a gauge in-line at the factory connectors, so they opted to save where they could. Nice for them, not so nice for us!

If you have a gauge that doesn't have the adapters, you could snag a fuel line from a salvage yard or buy online, use the end that connects at the firewall, cut the line and attach a hose for the gauge. You would only be able to test initial key-on pressure, but it could be helpful...?
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Old 03 Jul 2017, 07:46 am
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Default Re: Fuel pump pressure

In the Service Manual, this is the special tool mentioned to check fuel pressure:

Miller #6539

Miller / Mopar Tools 6539 5/16" Fuel Pressure Test Adapter

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Old 03 Jul 2017, 09:14 am
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Default Re: Fuel pump pressure

Quote:
Originally Posted by rckstein View Post
In the Service Manual, this is the special tool mentioned to check fuel pressure:

Miller #6539

Miller / Mopar Tools 6539 5/16" Fuel Pressure Test Adapter

.

Aha! It figures
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