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Fuel "regulator" in the center of fuel rail?

 
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Old 04 Nov 2016, 11:58 am
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Default Fuel "regulator" in the center of fuel rail?

So, can someone explain what this thing actually does, and why it is or is not necessary? How or why it functions?

I've found little info on it, most doesn't really explain it's function or purpose. If you have a working knowledge and understanding of this piece, maybe you could explain. I'm planning some fuel rail customizing, and should have a better understanding of this before I move forward...

Thanks!
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Old 04 Nov 2016, 12:41 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

The pump is the regulator. What are you talking about on the rail?
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Old 04 Nov 2016, 01:25 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

I understand the pressure regulator is in the tank. The cap looking thing in the center of the fuel rail. Supposedly some type of regulator.
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Old 04 Nov 2016, 01:51 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

Quote:
Originally Posted by GtPt05 View Post
I understand the pressure regulator is in the tank. The cap looking thing in the center of the fuel rail. Supposedly some type of regulator.
Can you post a pic? My fuel rail has nothing there. I looked on all data at the shop, I looked under vin g and vin 8 for turbos and neither shows anything there. I'm interested to see what exactly you're talking about. See attached
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Last edited by rob302; 04 Nov 2016 at 01:58 pm.
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Old 04 Nov 2016, 02:16 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

This thing here... which looks like nothing more than a potential fuel leak to me! It's a dead end system, so I don't get it...
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Old 04 Nov 2016, 02:22 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

that's an accumulator. usually it's on the firewall. it dampens the pulses created by the injectors opening and closing. it's similar to why electronics have capacitors to smooth out the voltage
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Old 04 Nov 2016, 02:27 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

Because Trump
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Old 04 Nov 2016, 02:36 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

That explains it, and makes sense. Makes sense why it's spring loaded. Thanks guys... mystery solved. Now I'm not sure if I need it...? I wonder if the SRT's have them?
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Old 04 Nov 2016, 02:38 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

2008 is the first year that was on the fuel rail so either someone changed the engine, or bare minimum the fuel rail is not original to your vehicle.

do you still have an accumulator on the fire wall?

IMO best way to delete that would be to get a pre-2004 fuel rail so you have a schrader valve on the end in case you want to add a pressure gauge or at least be able to attach a fuel pressure gauge some day.


Last edited by rob302; 04 Nov 2016 at 02:41 pm.
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Old 04 Nov 2016, 02:40 pm
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Default Re: Fuel "regulator" in the center of fuel rail?

..... dp
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