Yesterday while driving my fuel pressure gauge went up from normal 6-7psi to 21psi and held there. Changed filter held at 10 psi overnight parked went to 15psi on 10min drive to work this am. This afternoon was @ 9psi before starting drove home 10min went to 12psi. Parked @ 12psi and in the last 1 1/2hrs went up to 20psi sitting parked. I have Isspro mech. gauge with isolator tapped with banjo bolt @ cp3 stock lp. Any ideas whats goin on bad isolator,gauge these are only about 1 yr old.

 

Did you use antifreeze in the isolator? May have frozen? Antigel in the tank? Just a couple of thoughts off the top of my head.

 

yes 2 both. I found the problem when I installed level kit a couple of weeks ago Imust of knocked the isolator loose and it was bouncing between the shock tower and the battery tray.

 

It's nice when it is something silly.