Hi all,

Bought my 2008 XK with p0171/p0174 and p0411 a couple of weeks ago. Lean on both banks, and found that my air intake plenum was riddled with holes. It is like tissue paper. I'm hoping the new intake arriving today will solve my lean codes.

Regarding the p0411 code, I'm wondering what my diagnostic procedure should be here. I removed the hose from the output of the smog pump and used a smoke machine to test for any hose leaks. None found. The vacuum hose that runs between the solenoid and the diverter valve is brand new. (The line that has a t junction)

I don't think I've heard the smog pump start up on cold starts, so will investigate the fuses and relay for the pump later today. Any recommendations on further diagnosis welcome!

Thanks!