hoodygoodwood 78 3 Cars Posted April 15, 2015 Does anyone make/sell a gauge that can be fitted to the fuel rail of an XU9JA , maybe even left permanently on the car to monitor fuel pressure .I have seen cars fitted with a small diameter ( approx 25mm ) gauge that looked liquid filled and was a permanent fixture . Ideally it would fit direct to the std fuel rail and the hose from the fuel filter would screw into it - no extra pipework . Could one be made by the hydraulic hose specialists like Pirtek .Would it affect the engine running . Share this post Link to post Share on other sites
tomcolinjones 26 Posted April 16, 2015 those 'power' boost valves can be fitted with a gauge . Share this post Link to post Share on other sites
Slo 283 1 Cars Posted April 16, 2015 I'd be interested in something like this too as i've got an annoying misfire and this would be just the thing to keep an eye on the fuel pressure. Share this post Link to post Share on other sites
petert 641 Posted April 16, 2015 Just buy a 0-50 psi gauge, tee piece, two short hoses and plumb it between the filter and the fuel rail. It's not something you'd leave there. It's only for fault finding. 1 Share this post Link to post Share on other sites
Slo 283 1 Cars Posted April 16, 2015 So left permanently would affect performance/response? Share this post Link to post Share on other sites
welshpug 1,737 Posted April 16, 2015 no, the gauges arent designed to be left there. Share this post Link to post Share on other sites
carlh.1 8 Posted April 18, 2015 I have had a guage fitted in the fuel line for about 8 years now slo not had a problem yet. 1 Share this post Link to post Share on other sites
Slo 283 1 Cars Posted April 18, 2015 (edited) Ahh was wondering if anyone had left one plumbed in permanently cheers pal Edited April 18, 2015 by Slo Share this post Link to post Share on other sites
hoodygoodwood 78 3 Cars Posted April 18, 2015 Where would be the best place to find the correct gauge or have something made up , I imagine you could not use any old gauge as the fuel might damage the diaphragm on a cheap or unsuitable one . Share this post Link to post Share on other sites
Mac Crash 78 1 Cars Posted April 19, 2015 Try British flowplant or similar suppliers of high pressure equipment, the liquid inside the gauge is usually glycerin, it is there to damp the needle. Share this post Link to post Share on other sites
Tom Fenton 1,650 Posted April 19, 2015 As said above gauges can and do fail if left connected permanently. As part if my job I have a lot if kit with hydraulic systems, good practise is to put an isolation valve before a gauge and you only open the valve when checking or fault finding, then leave it closed so the gauge does not get constantly fatigue loaded. I have seen many failed gauges and often they piss hydraulic oil out when they fail. In this situation it would be petrol pissing out all over the engine, NOT GOOD! Aside from that the standard Bosch fuel regulator is a reliable piece of equipment so why would you need to keep checking fuel pressure anyway? Share this post Link to post Share on other sites
