Engine/Transmission (1998.5 - 2002) Fuel pressure problem

[LLeaton]

I just installed my dipricol mechanical fuel pressure gauges yesterday. I drove it for about 10 miles with 13. 5 psi idle and 10 psi during normal acceleration. I was going up a hill and it slowly started to climb to 25 psi. I bled the lines and it went to 14 psi and then slowly started to climb to 25 psi again. I got back to my house and opened the fuel cap and the tank was pressurized. I then bled the lines again and took a short drive with the cap off. the fp did the same thing slowly climbed to 25psi. When it gets to 25 psi it just stays there and it doesn't move. Any ideas? TIA

 

[Mr. C]

Did you fill the little spaghetti line with antifreeze? I did not leave enough air in mine at first and by the afternoon the ambient air temps left my gauge at 20 lbs with the engine off, so if you filled the cab line clear full like I did try letting some fluid out at the gauge side of the isolator.

Hope that helps, Mike