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fuel pressure and boost ?????

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Old Jun 27, 2010 | 11:05 PM
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fuel pressure and boost ?????
Just installed a fuel pressure gauge on my 97. i put the sending unit in the schrader valve fitting on the fpr. im reading around 40 does this sound right? Also i put a autometer boost gauge in where it used to be a issipro but i did not change the line i just screwed the old fitting into the gauge and at about 15lbs the needle goes crazy from 15 to 20 lbs i guessing maybe the lines are not interchagable. any Ideas. Thanks
 
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Old Jun 28, 2010 | 10:15 AM
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40 is pretty low. You should be running at least 60psi.

FPR shim would help bring that up to a better PSI for you.
 
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Old Jun 28, 2010 | 10:46 AM
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Where's the best place to purchase a fuel pressure guage? I imaging NAPA would have it. Does it come with a schrader valve already?
 
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Old Jun 28, 2010 | 11:00 AM
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If you are hooking up to the FPR, you want a electric sending unit gauge. I'd order online.
 
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Old Jun 28, 2010 | 12:50 PM
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Originally Posted by Brown Falcon
If you are hooking up to the FPR, you want a electric sending unit gauge. I'd order online.
Have a specific website brownie?
 
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Old Jun 28, 2010 | 01:05 PM
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Here's one ... Fuel Pressure Gauge (Electric) w/sensor - Super Blue 52mm
 
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Old Jun 28, 2010 | 01:20 PM
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Originally Posted by Hussler
Thanks Hussler. I guess I was expecting some non-mountable handheld guage. I'm not looking to mount this, just check the pressure to determine if it nees a shim or not. All of the ones I've found are like the one you linked to.
 
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Old Jun 28, 2010 | 01:31 PM
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In that case just go to Napa and get a cheap fuel gauge, liquid filled is best but not require for occasional use. It will bounce a bit, just take the average of the high / low. Thought you were looking for cab mounted unit.
 
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Old Jun 28, 2010 | 01:31 PM
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stick type tire gauge
 
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Old Jun 28, 2010 | 01:37 PM
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Originally Posted by Hussler
In that case just go to Napa and get a cheap fuel gauge, liquid filled is best but not require for occasional use. It will bounce a bit, just take the average of the high / low. Thought you were looking for cab mounted unit.
It would be nice to have a cab unit i guess. Would have to come up with an area to mount it.
 
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Old Jun 28, 2010 | 02:02 PM
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yep, tire gauge that goes up to at least 85psi
 
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Old Jun 28, 2010 | 02:08 PM
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how many times will that tire guage work until it goes out? I guess it only needs to work 2 times. Maybe 3-4 if something goes wrong doing the shim.
 
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Old Jun 28, 2010 | 02:17 PM
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Originally Posted by Brown Falcon
yep, tire gauge that goes up to at least 85psi
That's what I use, I had to shim my FPR as well
 
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Old Jun 28, 2010 | 08:08 PM
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I used mine about 3 times. Then let it dry out really good and it still seems to work.
 
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