dez58pop

hi can anybody help me and tell me what fittings i need please to make a fuel pressure gauge ,does the valve in the injector rail need to come out and a male fittings screws in or a female threads on top of the valve ,just the middle of the valve needs to be pushed in to release fuel ,like a valve in a tyre to relase air ,also doles the gauge need to be liquid filled ,just i have a 100psi gauge with a 1/4 npt fitting thats not liquid filled, thanks for your help

redneckjoe

you should see the male threads on the fuel rail. tap in there. kinda screws on like a kids bicycle air pump.

dez58pop

yep i know where that is so does all that valve come out ,and put a 1/8 npt male thread in its place and build off that ?

redneckjoe

no. i always just screwed the hose/fitting onto the valve. it will depress the needle and allow fuel pressure once its tightened properly. im not sure on the thread sizes. just use the correct one. ive used a cheap one fron harbor freight tools before. worked ok.

dez58pop

ok thanks matey

redneckjoe

i dont think id want a high pressure liquid filled fuel pressure gauge if thats what your trying to do? for a reading or diagnosis,...sure. not permanent.

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