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Junior Member
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296 Posts
Discussion Starter #1
my truck is a 2000 f350 super duty... has diy intake and 4inch straight pipe with power programmer... was wondering how to shim the fuel pressure regulator and how much i should shim it? thanks
 

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Junior Member
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19 Posts
You need to have a way to test the fuel pressure with a gauge first. I tied into the port on the backside of the filter bowl with some extra fittings and a plain old repair shop style fuel gauge, don't remember what I used, but should be easy enough to replicate if you have a gauge available. see what your truck is running now for a base reading, then make very small steps when you shim the spring, some guys claim to be able to use washers, but I've never been able to locate any that would fit, I used a small screw that would fit into the spring, and ground down the head of the screw until I got the pressure to 70 psi, it took 4-5 tries until I got it right. Good luck
 

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Curmudgeon
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472 Posts
I've got a pictorial in my Webshots albums for how to do the 7.3L
 
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nice pics of the fuel regulator. Thanks
 
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