Thinking my ddrp is taking a crap on me. Hopped in this morning and had 11 or 12 psi at idle and usually have 18 or 19. Wot is usually 12 14 now is 8 or less... Thinking that could be my power thief when I was pulling the trailer? 

Guys any suggestions for a mechanical gauge?? What do I need to make one? 

Electric gauges can work too but most install them wrong and the fuel pressure sensor will fail quickly. The key to long life from fuel pressure sensors is DISTANCE! You need to relocate the electric sensor at least 5-6 feet away from the tap point. Never just install a fuel pressure sensor at the tap point even with a snubber. You still need distance. 

 

I have the Isspro mechanical fuel gauge with the isolator

Its been working great for many years

 

 

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Edited December 8, 20177 yr by GSP7