5 Min fuel press gauge

[LarryB]

I got to thinking about my fuel pressure and like everyone else, The more I thought about it, the more I worried. I decided to just make a quickie gauge to check my overflow valve. I found a pressure gauge, internally dampened, liquid filled, stainless case, vibration proof, that was only 1-1/2" in dia. I made a double banjo bolt that includes the origional bleed screw on my lathe. I also turned and tapped a ring for the gauge. It mounts firmly right on top of my fuel filter housing.



It's probably not as good as a gauge mounted in the cab because you cannot see it while under load. But it took me all of about 5 min to install it. Total cost, about 35$ I can make up some more if anyone is interested.



My idle press is about 17 and 2500rpm is about 30. Does this seem about right??



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[Bob Wagner]

your pressures are ass backwards

pressure should decrease as RPM's increase



Mine are 13-14 PSI at idle and 9-10 at WOT



30 seems very high for a stock set up



Are you running a pusher pump?

 

[LSMITH]

Bob, mechanical pump on a 12V. It is not a constant displacement pump as ours are. The 12V feed pump will increase pressure by increasing volume with an RPM rise, more strokes of the pump per time = more volume.