Fuel pressure inconsistency run to run Aeromotive

Jim Kaekel · 03-29-2016, 10:53 AM

X2, three very good areas to look at.

Danny Ashley · 03-29-2016, 11:55 AM

What size needle & seat is in your Q-jet and what fuel pressure are you running? Larger N&S's don't like a lot of pressure. Also, how much pressure is at the regulator from the pump? One of my customers once told me he spoke with a Tech at Weldon and he said a Q-Jet should not have more than 18 lbs. to the regulator. Anymore and it "overworks" the regulator. Lastly, the ideal location for your regulator is in front of the carburetor, not to the side, and "soft" mounted according to Product Engineering. This allows inertia to work for you instead of against.

Jeff Niceswanger · 03-29-2016, 01:43 PM

If its the large N/S like Danny always put in ours, 5.5 lbs is about all they like . Some of them will go 6 , that's it ...

junior barns · 03-30-2016, 06:13 PM

Quote:

Originally Posted by Jeff Niceswanger

If its the large N/S like Danny always put in ours, 5.5 lbs is about all they like . Some of them will go 6 , that's it ...

What happens when you go over 6? Does it start to flood out or just hurt performance?

Mark Yacavone · 03-30-2016, 07:20 PM

Quote:

Originally Posted by junior barns

What happens when you go over 6? Does it start to flood out or just hurt performance?

I would say that the first thing you will notice is it will start hard .Look for smoke or vapor after shut off. It can't be good for anything to wash the cylinder walls on every start.

ken robinson · 03-30-2016, 07:20 PM

I run this set to . Check the volts when you check psi . Pack/fill the cell but don't let it cover/flood fuel cell vent . What return set up did you make inside your fuel cell so you reduce air bubbles from the pump inlet . Do you run 12 battery set up w/alter ? I do with a 55amp alter. / If it all tests ok . call them before the warranty ends . Let me know what fixed it .

03-29-2016, 10:53 AM	#1
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,229 Likes: 133 Liked 535 Times in 110 Posts	Re: Fuel pressure inconsistency run to run Aeromotive X2, three very good areas to look at. __________________ Jim Kaekel 3836 STK

03-29-2016, 11:55 AM	#2
Danny Ashley Member Join Date: Nov 2001 Location: Marion,In. Posts: 267 Likes: 60 Liked 110 Times in 29 Posts	Re: Fuel pressure inconsistency run to run Aeromotive What size needle & seat is in your Q-jet and what fuel pressure are you running? Larger N&S's don't like a lot of pressure. Also, how much pressure is at the regulator from the pump? One of my customers once told me he spoke with a Tech at Weldon and he said a Q-Jet should not have more than 18 lbs. to the regulator. Anymore and it "overworks" the regulator. Lastly, the ideal location for your regulator is in front of the carburetor, not to the side, and "soft" mounted according to Product Engineering. This allows inertia to work for you instead of against.

03-29-2016, 01:43 PM	#3
Jeff Niceswanger Senior Member Join Date: Jul 2003 Posts: 894 Likes: 690 Liked 1,034 Times in 368 Posts	Re: Fuel pressure inconsistency run to run Aeromotive If its the large N/S like Danny always put in ours, 5.5 lbs is about all they like . Some of them will go 6 , that's it ... __________________ Jeff Niceswanger 3740 SS

03-30-2016, 07:20 PM	#6
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 479 Likes: 74 Liked 224 Times in 87 Posts	Re: Fuel pressure inconsistency run to run Aeromotive I run this set to . Check the volts when you check psi . Pack/fill the cell but don't let it cover/flood fuel cell vent . What return set up did you make inside your fuel cell so you reduce air bubbles from the pump inlet . Do you run 12 battery set up w/alter ? I do with a 55amp alter. / If it all tests ok . call them before the warranty ends . Let me know what fixed it .