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  #1  
Old 08-17-2017, 04:56 PM
Fsj_Travis Fsj_Travis is offline
232 I6
 
Join Date: Jul 30, 2014
Location: Lasvegas
Posts: 56
Fuel pump problems on ls 5.3

hey guys having a problem with my high pressure fuel pump when it gets hot it starts getting loud and usually while on the freeway it will eventually stop pumping fuel
happened today and hooked up a fuel psi gauge it read about 10-15 psi so I hosed down the gas tank and inline fuel pump and bam back to 55psi primed and 46 psi running
my my question is should I just buy an other fuel pump and ive done this 8 times with no change or replace with an intank fuel pump
it sounds to me like the fuel pump is getting to hot to pump fuel

this is the set up I'm running now http://www.scoutcoproducts.com/produ...ivery-kit.aspx
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  #2  
Old 08-17-2017, 06:12 PM
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babywag babywag is online now
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Location: Land of froot loops and cukcoo-nuts, CA
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1st issue/question...why is pump getting hot?
Too close heat source? Or, fuel starvation?

An in-tank would probably solve first, but not 2nd if using stock tank?

2nd question...what tank are you using now?
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'88 GW (aka Babywag) and '90 GW (aka JUNKbucket) both fuel injected
1994 Caprice wagon
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Old 08-18-2017, 06:40 AM
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8man 8man is offline
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I went with an in tank fuel pump, using the stock tank. I had pics in my thread Building Road Trip, but Photobucket stopped hosting. If you want to see the in tank, let me know and I'll email you the pics.
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  #4  
Old 08-18-2017, 11:33 AM
chrism chrism is offline
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Join Date: Apr 07, 2002
Location: Derby, NY
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I was never able to get an e2000 pump to last for much longer than 1-2 years in my last wag w/LT1. Once they start to get loud they are done for. Is the Jeep its in the 78 listed in your profile?

Here is what I did on my wag. Check the in tank pickup and make sure the sock filter extends all the way to the bottom of the tank. I extended mine with a piece of fuel resistant hose so it was lying on the bottom of the tank. Get a new sock filter if yours is old.
Ditch the filter before the pump. The E2000's don't like to suck fuel from the tank. Most of the fords this pump was used with had an in tank pusher pump. The filter before the pump makes it even more difficult. Mount the pump as low on the frame rail as possible.
Get a walbro GSL392 pump to replace the E2000. buy it from a reputable place. There are chinese knockoffs out there on ebay and amazon. This pump worked for the last 3 years I drove that wag. It was my daily driver and I put 12-14K a year on it.

Ultimately the best solution for this is to go to the 2 door s10 blazer tank between the rear frame rails. This is what I have now on my 5.3 cherokee.
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  #5  
Old 08-18-2017, 04:35 PM
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8man 8man is offline
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I still have the filter set up used on some older Broncos that were converted to high pressure pumps. Stops the pump from starving. I can get you info on that too. A very simple solution. Worked for me until we did the in tank for other reasons.
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  #6  
Old 08-18-2017, 11:34 PM
Fsj_Travis Fsj_Travis is offline
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Join Date: Jul 30, 2014
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stock tank fuel pump is mounted on the rear crossmember by the rear center seat belt bolts
exhaust is routed like stock but its the pump it self that gets hot not the fuel
I'm tired of replacing this pump ever 3-4 weeks
I was thinking about maybe swapping over to the 97 blazer fuel tank set up but cant find the pictures of the install since photobucket stopped
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Old 08-19-2017, 08:51 AM
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babywag babywag is online now
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If you're replacing the pump every 3-4 weeks, you have something wrong.
Likely fuel starvation heating up pump/killing them.
You should get many tens of thousands of miles on a pump, not a few weeks
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'88 GW (aka Babywag) and '90 GW (aka JUNKbucket) both fuel injected
1994 Caprice wagon
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Old 08-19-2017, 02:39 PM
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8man 8man is offline
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I used the stock tank in the stock location and converted it into an "in tank" fuel pump with this.

20170523_193647_1495639687432 by Robert Moorman, on Flickr

It went in this hole, cut with a hole saw.

20170523_193642_1495639688666 by Robert Moorman, on Flickr

It allows me to keep my spare tire location. I didn't have to fab a bracket to hold it in place, and the gas lines are stock.

Just a thought.
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  #9  
Old 08-19-2017, 06:33 PM
Fsj_Travis Fsj_Travis is offline
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Quote:
Originally Posted by babywag
If you're replacing the pump every 3-4 weeks, you have something wrong.
Likely fuel starvation heating up pump/killing them.
You should get many tens of thousands of miles on a pump, not a few weeks

happens with a full tank
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  #10  
Old 08-19-2017, 06:50 PM
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babywag babywag is online now
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Well something is wrong...

What's the relationship of pump to bottom of tank?
They're designed to push fuel(not pull), if it's not correct it'll struggle.
The rear crossmember is pretty high...

What's voltage @ pump? Wire gauge too small? Poor ground?
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'88 GW (aka Babywag) and '90 GW (aka JUNKbucket) both fuel injected
1994 Caprice wagon
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  #11  
Old 08-24-2017, 08:07 PM
Pillow Pillow is offline
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Join Date: Jun 19, 2017
Location: NoVA / Dallas
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This Novak product is what I am planning on using for the LS swap. For the price it seems reasonable... Unless you all know of a cheaper solution that uses a Walbro or factory GM pump?

https://www.novak-adapt.com/catalog/...sj-fuel-module
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