having fuel problems

[chris4g63t]

First off after my car sits for about two hours it takes about 15 cranks to start. second problem is that my low and high fuel trims on my logger are maxed out lean (139), but my mid fuel trim is at 106. I have tried 2 brand new o2 sensors so far and it hasen't helped. The o2 won't cycle at idle anymore but it works at part throttle. Is there any way that could cause o2 sensors to go bad that quick, within 500 miles of driving. My fuel mods are 255 pump, aremotive afpr, stock injectors. Any help would be appreciated

 

[urcnjoe]

First off after my car sits for about two hours it takes about 15 cranks to start. second problem is that my low and high fuel trims on my logger are maxed out lean (139), but my mid fuel trim is at 106. I have tried 2 brand new o2 sensors so far and it hasen't helped. The o2 won't cycle at idle anymore but it works at part throttle. Is there any way that could cause o2 sensors to go bad that quick, within 500 miles of driving. My fuel mods are 255 pump, aremotive afpr, stock injectors. Any help would be appreciated

What is your fuel pressure set at??? How much boost are you running??? Post a log and try to give some more information. With that B16g and stock injectors your set up is not very safe. Keep your boost at stock levels and use your afpr to up your pressure to help compensate for the small stock injectors. Like I said before post one of your logs and we will be able to help out some more.

 

[chris4g63t]

I actually am using a 14b with an evo 3 turbine housing since my 16g sucked up some bearing shavings from my old motor. For now I am running 10 psi until I can get this problem figured out. My base fuel pressure is at 38 psi vacuum line detached. Also my base fuel pressure doesn't stay steady somedays it will be at 38 and other days it is lower. I have to adjust it almost everyday. Luckily for me this isn't my daily driver

 

[steve]

Liquid filled gauge?

Steve

 

[chris4g63t]

Its a summit brand liquid filled gauge

 

[steve]

Thought so. The readings change as the fluid heats up and expands. If it gets hot enough the seal in the back pops out. I've lost two that way until I figured it out and now only use non-liquid filled gauges under the hood. Set it cold and leave it alone until you can get a new gauge.

Steve

 

[chris4g63t]

Thanks for the input on the gauge. Do you have any other suggestions on my other problems that I am having