I have land cruiser 2009 generating smoke while cold for 10 min then disappear. I want to know is it from the PCV ( guide valve seal) since the smoke is blue and sometime black. It only do this at morning when it is clod then never do while heated.Can I replace the PCV seals without dismantling the head.

SOURCE: toyota corolla 1996

is it the 2E engine with carburetor...or the fuel injection one?

SOURCE: 1993 TOYOTA TERCEL 1500cc Valve Seals Replaced now smokes much worse

You either have had the wrong valve seals installed, they are physically missing, or the valves are incorrect (too loose in the guides/stem too thin). The rocker arm seals will not contribute to your issue. If it did not have the oil smoke before you took the head off, the issue is with whatever the machine shop did. Valve seals have to fit TIGHT, or oil will go down the valve stem into the intake.
Take the head back to the machine shop & tell them to fix it. For free.

SOURCE: 97 Land Cruiser Oil Leak,Rear Seal?

sounds like your lower gasket is shot, and while under pressure its slowly leaking through a cracked gasket try getting gasket sealent and put on seal crack let it sit for a day or 2 it should obsorb in and fix the gasket that should probably do the trick

SOURCE: oil consumption, no smoke, no leaks

Yes a crappy PVC valve can cause some of your problems but not necessarily all of them, they are cheap, I always replace it to start. The air cleaner housing being full of oil is like how the oil is being consumed. In addition to a PVC valve, there may also be a blow-by hose running into the housing. check to see what other hoses go into the housing & which ones have oil coming from them. I'm not familiar with the "Motor Honey" you mentioned but I rarely add additives to my Engine oil, especially if they are thickeners. The only stuff I recommend is a Quaker state or similar "High Mileage Oil". These semi-synthetic oils have additives to swell old rubber & cork seals in older engines and can help reduce oil consumption & leakage. Again, it may not be a total solution, but it couldn't hurt to drain out all of the existing oil & replace with a high mileage type & also change the filter at the same time. Never mix it with other oils, despite the manufacturer telling you it may be safe to do so.

SOURCE: newly overhauled toyota corolla 2e engine emits black smoke

I have toyota corona 3s engine it smokes black and fuel consuption is high we have changed the engine oil and cylinderhead gassecate but still black smoke is comming what should i do