Lean condition

[xtreme6mwm]

O.K.,i'm getting frustrated. I just changed the cam,heads,and injectors,and i'm getting a really bad lean condition.The car idles and drives(normal driving)fine but when i start to lay into it, Scanmster says get off the gas.Could a fouled o2 sensor do this? It didn't do it before when i had 009's.Any one else have a problem like this.?

 

[MARINES185]

post some o2 and blm numbers. yes a fouled o2 sensor can
cause this.

 

[azgn]

the 02 sensor is out of the circuit at PE/wot, that is likely not your problem....verify your fuel delivery/boost is tracking

 

[xtreme6mwm]

The O2 readings jump between two numbers,something like 395 and 402 and i think the blms are around 128,i don't think i understand what you mean by fuel delivery and boost is tracking, please explain

 

[MARINES185]

what he means is for every one pound of boost pressure is your
fuel pressure increasing one pound. what is your fuel
pressure at with no vacuum? what do you have for a fuel
pump?

 

[xtreme6mwm]

I'm almost ashamed to say that it's a postons fuel pump that is ,according to them,supposed to be good to 500hp? But it is not the stock pump.Right now the fuel pressure is at 44lbs with the line off.