Is it possible to use an old boost or oil pressure guage for fuel pressure

 

Oil pressure gauge would work.

 

not boost guage, oil, water, fuel anything like that

 

Why wouldn't a boost guage work
Just wondering because I have an old boost guage that matches my other guages

 

there made for air not fuel, but im not talking from experince, so give it a try the worst that can happen is you destroy a guage

 

Daking, pressure is pressure. Will work just fine. They work good for temporarily testing fuel pressure. Any mechanical gauge will die a slow death with a mechanical fuel pump, don't matter what it says on it, fuel, oil, water or boost if used in a permanent manner without a snubber or isolator. I've used just about them all, and for a permanent FPG, I prefer the Westach 30psi electric gauge.

 

Here's my fuel pressure gauge. Cost $10, it's been in there about 2 years.

 

fuel pressure gauges mounted on filter housing on farm tractors some are over 30 yrs old ,not made in china

 

Well why will it die a slow death with a mechanical pump, I have an electric pump on my truck

P.S I'm to dang cheap to go buy a fpg rather use junk I already have

 

The pulsing of a mechanical pump will kill the internals of the gauge.

 

Thanks for the replies I'm gonna go put a boost/fuel pressure guage on my truck