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I think the best place is at the end of the fuel rail before the return if you have an aftermarket regulated return, that means the regulator block. If not, one of the head ports that has a 1/8npt plug is a good source.
I am still waiting on the new DiPricol fuel pressure gauge that does not require an isolator. Dennis at ITP told me it's release was imminent but that was a few months ago. Still nothing. Wherever you tap it, make sure you don't plumb fuel into the cab. A disaster waiting to happen. Sorry, no pics. I do have a gauge that I can slap on at a moments notice though. Harbor Frieght unit.
Electric fuel pressure gauge, there is a port on the back side of the fuel bowl just asking to have a sender installed... Isspro has a 100psi Fuel pressure coming out in a few weeks, autometer has one too
no kidding thats about half of a complete regulated return system, or more I think I have about $350 into my regulated return DIY system including the gauge which BTW is hooked into the port in the regulator itself.
Its nice though, I can see exactly whats going on all the time, and when my fuel is gelling(the reason for the guage, it was used for diagnostics) Its the silver thing almost directly in the middle of both pictures. In the second one I mvoed a wire out of the way for better look. Its ont he right side of the bowl in the pictures in the back the silver sensder with teflon tape going into it.
Ouch! $200.00 for an electric sending unit fuel gauge? Now that hurts.....
Yeah it's not exactly cheap, but I like mine. I watch it wiggle around under different loads and it really is a nice early warning system that you are about to run out of fuel. I have watched mine fall to below 10psi going up over an overpass under heavy load with very little fuel in the tank. The fuel runs to the back, away from the pickup, and the pressue falls. I've found it beneficial to be near a fueling station under this condition.
You dont have to remove the sender to drain the fuel bowl, the factory drain valve is still there... The Fuel pressure gauge in the cab is and should be about the 3rd or 4th gauge anyone puts in there truck, I rank it higher then the boost gauge... 300 fuel pump+ $400 tow bill because I didnt know the fuel pump was bad= $200 fuel pressure gauge good investment...
It was my 4th gauge. There is a test port in the bowl you put the sender in. Also the drain valve is on the other side and much lower. Im running approx 58psi now at idle but drops to about 45psi , i had it shimmed at 73 psi but i ended up screwing up the regulator cap, so i left it alone.
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