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Not able to get more than 6lbs fuel pressure.
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DRR Trophy
Picture of jay giles
posted
On third fuel pump now...can't be that many bad pumps!... Info..pro systems 440 gph pump. Bypass regulator...alky fuel. Car wasn't running right. Could only get 6 lbs press at track no matter where you put regulator...figured pump was bad. Put on new pump and regulator from pro systems. Then only could get 3 lbs. put old pump back on and had 6 lbs. defective pump?.. Patrick at pro systems agreed. Sent me another pump. New pump came today...can get barely 6 lbs now. Cleaned tank, blew out lines, switched return line,made it supply line, bypass into fuel jug, same results. No matter where I adjust regulator can get no higher than 6 lbs. tried a different gauge also. 12.5 volts at the pump...help!
 
Posts: 36 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Elite
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Liquid filled or dry fuel pressure gauge?
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
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No filter? All tests using the same regulator? Tested the output directly from the pump outlet? Take care. Tom Worthington


If it seems that bracket racing has gotten too expensive for you, maybe you are just doing it wrong.
 
Posts: 1254 | Location: Rocky Mount, NC | Registered: December 01, 1999Reply With QuoteReport This Post
DRR Trophy
Picture of jay giles
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Liquid filled gauge. If it was bad gauge I should be able to put pressure high enough to push past needle and seat?... New and old regulator tried.
 
Posts: 36 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Trophy
Picture of jay giles
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No filter in system.
 
Posts: 36 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Elite
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The gauge is your problem. Throw it in the weeds and replace it with a dry gauge.
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
Picture of chasracer
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can you connect the fuel pressure gauge to the output of the pump?


Save on Fuel - GetUpside - https://upside.app.link/jE7eqmHc2z
 
Posts: 1135 | Location: The problem is not the problem. The problem is your attitude about the problem. Savvy?” ~~ Captain Jack Sparrow ~~ | Registered: August 21, 2000Reply With QuoteReport This Post



DRR Sportsman
Picture of Matrix
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quote:
Originally posted by 1320racer:
The gauge is your problem. Throw it in the weeds and replace it with a dry gauge.


This!!!


Daryl Pinder

Dynasty Motorsports
www.dynastymotorsports.com


 
Posts: 456 | Location: Ft. Washington, MD USA | Registered: March 05, 2001Reply With QuoteReport This Post
DRR Trophy
Picture of jay giles
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If it was the gauge that was off...wouldn't I be able to turn pressure up to push past the needle and seat?
 
Posts: 36 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
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Sounds to me like regulator, do you have another you can swap it out with and try?


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-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 4138 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Elite
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quote:
Originally posted by jay giles:
If it was the gauge that was off...wouldn't I be able to turn pressure up to push past the needle and seat?

No.

pump pressure, float setting and needle and seat all are part of the equation.

Bottom line is your gauge is a problem. May not be the only problem but must be replaced.
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Trophy
Picture of jay giles
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Have 2 regulators....original one a new one.
 
Posts: 36 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Elite
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Change the gauge!!!
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
Picture of rusty
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could the inlet be constricted somehow ?colapsed hose ,something in tank ect


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1438 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post



DRR Sportsman
Picture of 369dragster
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quote:
Originally posted by rusty:
could the inlet be constricted somehow ?colapsed hose ,something in tank ect


This was also my first thought, collapsed hose on the inlet or maybe just a flap inside the hose.


Ken
 
Posts: 321 | Location: Massachusetts | Registered: March 15, 2007Reply With QuoteReport This Post
DRR Trophy
Picture of jay giles
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Inlet line is a #10 line. It's only a foot long. I've checked it and it's ok,checked the tank also. No one in this small hick town has a gauge...lol
 
Posts: 36 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Elite
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Summit/Jegs overnight.
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Sportsman
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Two things I have not seen mentioned yet.

What is the fuel pressure at the outlet of the pump and/or at the input to the regulator?

Have you done a flow test into a gallon can to verify the system can flow what it should?
 
Posts: 457 | Location: coquille,or | Registered: November 18, 2003Reply With QuoteReport This Post
DRR Sportsman
Picture of TD3550
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3 pumps no.There is some form of restriction. Flow test into a container. Any foam in the tank?
 
Posts: 1410 | Location: Under a Truck | Registered: August 23, 2013Reply With QuoteReport This Post
DRR Elite
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3 pumps same liquid filled gauge that shows different fuel pressure based on the temp/viscosity of the glycerin in the gauge. If you can’t get a dry gauge then drain the liquid out of yours.

quote:
Originally posted by Joe Burkleo:
Have you done a flow test into a gallon can to verify the system can flow what it should?

A meaningless test created nearly 40 years ago to sell fuel pumps.

This message has been edited. Last edited by: 1320racer,
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
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