California smog analysis, ask a smog tech

[85Ram50]

I wonder if that oil flush that Geezer101 suggests would work?
I've done it but I don't need smog where I live. Anyway He says to drain the oil and the filter. Put the old filter back on add 1/2 the the amount of new oil suggested (2 qrts) and 1/2 qrt of diesel. Then drive it as normal for a day or so. Then drain it while its warm and put on the new filter and add full amount of oil. He says it fixes valve seals and stuck rings and removes a lot of gunk. I've done it on my Ram50 and my Dakota no harmful effects.

[geezer101]

He says it fixes valve seals and stuck rings and removes a lot of gunk. I've done it on my Ram50 and my Dakota no harmful effects.

It will break down old oil residue inside the engine but it won't fix valve seals. It may 'clean' them out a little and take some of the old oil that has laminated onto the valve stems which might be enough to get them seal better, but when a seal is dead - it's dead. The oil flush is primarily to freshen up the hydraulics first, and then to prolong the life of the new oil by decontaminating the engine as much as possible.

[Sampson]

I definitely appreciate the ideas on how to clean out old crud and oil residue from the engine, and I figure I'll try it, but how likely is that to be the culprit for such high NOx emissions?