Fuel system discussion

Super08Duty · Mar 20, 2013

Beans71086 said:
I like the cooler, need to find another place to stuff it though. My fuel system sits right where your cooler does.

Being my truck is a SC, I didn't have too much room on the frame. You'd ideally want it on the inside rail, or build something to protect the cooler if you offroad. Same with the LP fuel system. I chose to mount it to the outside of the frame because it looked good lol

Dzchey21 · Mar 22, 2013

so when you guys say reasonable fuel temps whats reasonable to you?

If i stay 70 mph or under my temps stay around 100 degrees, if i get above that it can hit 130 pretty quick

118 is where my truck does that crappy pump surging bull **** that seams to be hard on injection line fittings

jdgleason · Mar 23, 2013

Mine really won't get more than just a couple degrees above 100.

Dzchey21 · Mar 23, 2013

jdgleason said:
Mine really won't get more than just a couple degrees above 100.

I'm talking about using these single pass coolers

cfdeng7 · Mar 23, 2013

Any body ever use a duramax fuel cooler?

BFT · Mar 23, 2013

cfdeng7 said:
Any body ever use a duramax fuel cooler?

Mikey and I will be putting in a remote cooler in his silver truck. It will be located in the rear

Strokin6.4 · Mar 23, 2013

How are you guys monitoring fuel temps?

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Beans71086 · Mar 23, 2013

Prolly dash daq, there's a fuel temp sensor in the fuel bowl.

Strokin6.4 · Mar 23, 2013

Dzchey21 said:
That's a good point.

From a labor stand point not worth opening the valve covers to do so.

I will say I would like to.see the same test Jd did with a bigger nozzle

Dustin do you think with more fuel than 60hp nozzles it would make up for the loss power. Something like 30%. Eric swears it will make more power with 30s and lower p.w. than stock. Idk I'm kinda on the edge of doing this and if its way down just put some dual fuelers on it down the road.

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jdgleason · Mar 23, 2013

That's how I watch mine.

Strokin6.4 · Mar 23, 2013

jdgleason said:
That's how I watch mine.

Is it under fuel rail tempature? When I was about to shut mine off tonight it was aroubd 120-122. But I also don't have a cooler

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jdgleason · Mar 23, 2013

Strokin6.4 said:
Is it under fuel rail tempature? When I was about to shut mine off tonight it was aroubd 120-122. But I also don't have a cooler

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Should be EFT1 or engine fuel temp

one2nine · Apr 2, 2013

Ok since this is a fuel system discussion I have an extremely stupid question. Will this nylon braided hose work with push lock fittings or does it require an fittings?

http://item.mobileweb.ebay.com/viewitem?itemId=330870063936

http://item.mobileweb.ebay.com/viewitem?itemId=190651023367&index=3&nav=SEARCH&nid=11620162417

08BIGRIG · Apr 2, 2013

one2nine said:
Ok since this is a fuel system discussion I have an extremely stupid question. Will this nylon braided hose work with push lock fittings or does it require an fittings?

http://item.mobileweb.ebay.com/viewitem?itemId=330870063936

http://item.mobileweb.ebay.com/viewitem?itemId=190651023367&index=3&nav=SEARCH&nid=11620162417

I am going to say that it will only work with the AN style fittings. Just get the Parker Push lok hose and be done bud. You only need like 6' of An6 and 6' of An8. I have the Elite Airdog Upgrade in my truck and I had to supply all my own fittings and lines for the second K16 pump mounted up front. I just went to the local Parker store and bought all the fittings and lines and it was only $60. Then I had to order the fittings that go into the second hpfp which I got from Elite for $35.

91turbogsx · Apr 27, 2013

I finally got my build running but have a few questions about the fuel system. I have the Airdog regulator maxed out. But when I try to control pressure with the regulator on the Elite AD upgrade it doesn't effect the pressure at all. Also seems to lose it's prime if it sits for a while. Any ideas?

And I'm also getting a weird howl from what sounds like the return line. The pressure seems to pulsate a bit between 12-14 psi and the howl goes up and down with the pulsation. It'll eventually stop and settle at 14-15 and the howl becomes solid. Only makes the noise at idle. Guess i'm just curious if anyone has ran into this issue before I start digging back into it.

91turbogsx · Apr 28, 2013

Disregard my last post. I figured it out. The howl is my cp3 high pressure line vibrating at idle.

blk350on20s · Apr 29, 2013

Yep. All the twin pumps get a howl from the lines. Did you figure out your regulator?

Meniacal_Mark · Apr 29, 2013

Did anything ever come of the elite modded pump?

jdgleason · Apr 29, 2013

Meniacal_Mark said:
Did anything ever come of the elite modded pump?

Not yet, no.

91turbogsx · Apr 29, 2013

blk350on20s said:
Yep. All the twin pumps get a howl from the lines. Did you figure out your regulator?

Yeah I figured out the regulator I believe. And it wasn't loosing it's prime. It's just how it starts with the CP3 on there. It's like it fires up but idles at 400 rpm for a few seconds before it jumps to 750ish. Eric said it's just the nature of the beast since there is only so much he can do with it operated off the EGR signal.

As far as the howl from the line, this howl is louder than the exhaust itself (Which is quite loud!) I can hear it when I go in a store and leave the truck running. Needs a brace of some sort and it should take care of the issue. Cause as soon as I put slight pressure on the line in the middle the noise goes away or becomes drastically quieter.