My truck only blows smoke when i rev it not on first start up or idleing and it didnt blow the smoke before i had to do a head job on it the heads was cracked blew white smoke then now i dont know what to do if intake was sucking oil thru bottom plate wouldnt it do it on start up and idleing i replaced valve seals but had a problem pushing a few on
could there possible a seal moved up and off when i finally started motorafter i done work

 

Also when i did plenum gasket the old one had a few small spots that was sucking thru but exhaust smoke was only white from burning antifreeze and hadnt thrown out blue smoke till now

 

Was a comp test done on this motor before new heads were put on it? If not it time to do one now, piston rings are probably toast.

 

I havent done one yet but thats cause i dont have one but it didnt do this till after i did top end on motor thats what i dont understand. if it was rings wouldnt it have done this before i did heads and what not and also do it at idle and first start up when cold

 

Thank you for using a period! I have read several of your threads, but gave up reading your posts half way through due to lack of punctuation. They give me a headache trying to understand them, they are very hard to read without periods or commas. I get half way through, get that headache, and give up on helping you because deciphering your posts is too much work. I am willing to bet you'd get more help here if you just made an attempt at the punctuation alone, as many people I am sure are like me and give up.

I am not asking you to be perfect, this is not an English language forum, I am just asking you to try. Even if you get the punctuation wrong half the time, your posts would still be easier to read.

Now to your question... buy a compression tester (they are pretty inexpensive to get) and either test it yourself, or pay a trusted shop to do it for you. On the 5.2L and 5.9L V8s, the first thing you test with blue smoke (burning oil) is the compression and plenum gasket. Could narrow down your issue pretty quick.

 

If you're having doubts about the valve stem seals, pull the valve covers and have a look. If they're OK, do as jasonw says.

Probably need a ring job. Just guessing.

 

Did you replace the heads, or did you just reseal the valve seals on the valves and install new head gaskets?