socorob Posted October 5, 2014 Share Posted October 5, 2014 I have seen a few photos of people that looks like they have a 90 degree fitting on the service port on the fuel rail with a pressure gauge on it. Anyone know who makes those or what type of threads are on the service port? Quote Link to comment Share on other sites More sharing options...
EastTnZ Posted October 5, 2014 Share Posted October 5, 2014 I just typed this in on eBay and bought mine "ls1 fuel rail pressure gauge" and it's fairly cheap Make sure you take out the needle in the end first before installing the gauge. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted October 5, 2014 Share Posted October 5, 2014 Ditto Quote Link to comment Share on other sites More sharing options...
socorob Posted October 5, 2014 Author Share Posted October 5, 2014 Thanks! that was fast. Quote Link to comment Share on other sites More sharing options...
mattd428 Posted October 5, 2014 Share Posted October 5, 2014 Usually 1/8" npt I think. Quote Link to comment Share on other sites More sharing options...
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