So for some reason i have gone through 3 fuel pressure gauges in the past 1,000 miles. my first one was cheap and the needle shook like crazy, and it lasted about 400 miles, the second one i got was a jegs fluid filled gauge and that didnt last very long at all, maybe 100 miles, and this last one ive had lasted about another 400 miles.

Has anyone else had his happen? All of my gauges have been mechanical and i tapped the pressure from the banjo bolt coming into the injection pump. Should i get an electrical one? Maybe tap into a different place? Or is something wrong with my lift pump?
Is it normal that the pressure will vibrate?

Thanks!

 

That's a good place. Get an electric one. The OEM mechanical LP is very... violent. At this point, you could have gotten a top quality gauge from ISSPRO. It's still gonna bounce all over unless you get a snubber, and probably a couple feet of fuel line to distance the sensor from the pulse event, but I've had mine for well over 100,000 miles without issue.

 

I have an electrical gauge on my 2500 tapped into the banjo bolt going into the IP with a snubber valve and it still bounces. I'm buying an extension to move the sensor Away from the IP because like SVT said, the pump is very violent. Too much vibration. Just getting my taxes done and doing a bunch more upgrades. Ill let you know how the extension works for the FP gauge.

 

Easiest thing to use for the extension is a grease gun whip. It comes with the requisite 1/8" NPT ends and is a good length. That said, they can be a little stiff and so some work better than others at dampening the pulsation at the sensor. Which, BTW, you'll still need an 1/8" coupler so you can screw the sensor in. But it's more or less pre-made, quick and easy. And cheap. I had best luck adding a needle valve to the snubber, and an orifice to the needle valve. So it goes IP < snubber < needle valve < orifice < grease gun whip < coupler < sensor. Or maybe I put the orifice in the coupler, not the needle valve. I don't remember, but I don't think it really matters. My gauge is an ISSPRO, and Mike (the guy who designed their EV2 series gauges) was nice enough to send me the needle valve and orifice for free.