NX Fuel Pressure Safety Switch ?
Thread Starter
Launching!
Joined: Mar 2002
Posts: 229
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From: Amarillo
NX Fuel Pressure Safety Switch ? How do you check the settings on a NX Fuel Pressure Safety Switch? I'm running a Walbro 255 intank pump and 30 lb SVO injectors. My nitrous works fine for the first run. Then on the second run the nitrous shuts off at the higher rpms of each gear.
So I'm thinking my NX Fuel Pressure Safety Switch is bad or needs adjustment.
Thanks for the help.
So I'm thinking my NX Fuel Pressure Safety Switch is bad or needs adjustment.
Thanks for the help.
!Dial-up Director
Joined: Nov 2001
Posts: 3,100
Likes: 1
From: Louisiana
Re: NX Fuel Pressure Safety Switch ? You can adjust it by removing the rubber boot and turning the dial to change the pressure its set at. You will need some sort of fuel pressure gauge to check this.
Justin
Justin
Launching!
Joined: Mar 2002
Posts: 272
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From: Bel Air, Md.
Re: NX Fuel Pressure Safety Switch ? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by CB99SS:
<strong> What pressure should it be set at?
Thanks </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Like Jsears said you will need a pressure gauge. First check pressure at idle and make sure it is within spec. Then do a wide open throttle pressure check and note any pressure drop and assure it is within acceptable range. Assuming the WOT pressure is good you will usually set the pressure switch to open the circuit at about 5 psi lower than your lowest reading give or take a few psi.
<strong> What pressure should it be set at?
Thanks </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Like Jsears said you will need a pressure gauge. First check pressure at idle and make sure it is within spec. Then do a wide open throttle pressure check and note any pressure drop and assure it is within acceptable range. Assuming the WOT pressure is good you will usually set the pressure switch to open the circuit at about 5 psi lower than your lowest reading give or take a few psi.
