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$25 Fuel Pressure Gauge

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Old Dec 21, 2008 | 11:04 AM
  #1  
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Default $25 Fuel Pressure Gauge

The other day I was needing to test my fuel pressure and couldn't cough up the cash for a permanent FP gauge, so this is what I came up with...

Materials:
1/4" x 10' tubing $1.89
Pressure Gauge $8.20
1/8" brass nipple $1.85
2 reducing couplers 1/4" x 1/8" $2.36/each
2 Hose barb adapters 3/16" x 1/4" MIP $2.23/each
Teflon tape $.99

I found all of this on the plumbing aisle at Home Depot.

I started by putting all the brass fittings together
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I left the gauge off so I could purge the line before putting it on
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Here is the installation under the hood, I bumped the starter and ran the lift pump to get rid of the air before adding the pressure gauge
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I tested the gauge before running it through the firewall and into the cab. I mounted it with some heavy duty double sided stuff from my buddy's shop
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And there it is. I am using this temporarily to monitor my fuel pressure under normal operating conditions, I've been having some LP issues come to find out I know the best place to test fuel pressure is at the VP44 itself but this gives me at least some idea. If there are any improvements I can do to make this type of setup better please let me know
 

Last edited by cummins24; Dec 21, 2008 at 01:42 PM. Reason: links didn't work
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Old Dec 21, 2008 | 11:06 AM
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Links=no workie!!
 
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Old Dec 21, 2008 | 11:09 AM
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you have to upload the photos bud

https://www.dieselbombers.com/About.php#Image
 
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Old Dec 21, 2008 | 11:26 AM
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If you upload them to Photo Bucket, it will give you a link under share, then image code. That would be the one you copy, then paste to the quick reply.
 
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Old Dec 21, 2008 | 01:43 PM
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Should be up now
 
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Old Dec 21, 2008 | 01:48 PM
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Masterful install.

I would install a needle valve right off the fuel filter housing to keep your guage from getting damaged. Start the truck with the valve completely closed and then slowly open it until you get a steady/smooth reading on the guage. Any more, and the guage will fluctuate.

Again, nice work.
 
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Old Dec 21, 2008 | 01:52 PM
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yeah thats the problem I have with it right now but I will be adding the needle valve soon thanks for the info
 
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Old Dec 21, 2008 | 07:10 PM
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valve is also good in case the line breaks and you get fuel in the cab
 
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Old Dec 21, 2008 | 08:48 PM
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At low pressures like this - there is only a slim chance of that
 
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Old Dec 21, 2008 | 08:48 PM
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I bought a needle valve while I was in town today but haven't installed it yet. I wasn't too worried about the line breaking it's rated at 70 psi but you can never be too safe
 
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