4g64 burning oil

Since 3 weeks ago I've rebuilt the engine, didn't ride the car yet but just leave i idle and I saw the car began to smoke.
Took the sparkplugs out pistin number 1 and 3 has oil on them 2 and 4 are dry.
Start the engine again leave it run for a while, turn it off, took the sparkplugs out, pistons number 1 and 2 oil on them pistons 3 and 4 dry.
So I took the head off to changed the valve seal, all the intake valves has oil on them.
Saw oil in the intake manifold as well,is that normal?
The car doesn't use pcv valve anymore.
What do you guys think?rings problem or valve seal problem?

do a compression test just to make sure the rings are sealing fine.

Its normal to have oil burning after a rebuild, theres a bunch of assembly lube in there. You should have changed the valve seals anyway.

Do you use oil catch cans? Thats ok, but are the lines routed back to the intake pipe or youre using a breather.

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Originally Posted by microgalant

Since 3 weeks ago I've rebuilt the engine, didn't ride the car yet but just leave i idle and I saw the car began to smoke.
Took the sparkplugs out pistin number 1 and 3 has oil on them 2 and 4 are dry.
Start the engine again leave it run for a while, turn it off, took the sparkplugs out, pistons number 1 and 2 oil on them pistons 3 and 4 dry.
So I took the head off to changed the valve seal, all the intake valves has oil on them.
Saw oil in the intake manifold as well,is that normal?
The car doesn't use pcv valve anymore.
What do you guys think?rings problem or valve seal problem?

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were the valve seals hard to do? i'm going to have to do mine soon and was curious. i'm really sick of the smoke and the oil burning off.