My truck seems to have a new issue now. When you first start it up if you let it idle it's fine however if you rev it up like in neutral or park the exhaust smokes some when you hit the gas. Not a ton but some smoke comes out when you hit the gas. After a few minutes this completely goes away and it's back to normal. Do I need piston rings or whats going on now? I tired of fixing stuff on this truck.

 

The valve guides are going bad happens alot in chey motors.

 

I would say its the valve seals

 

Any downside to just letting it do this or is this something I should fix asap? It only smokes when you rev it up high and only for the first few minutes after you start it.

 

plenum?

 

no harm. keep it full of oil, leave it alone and drive it.

 

Chevy motor?? isn't this a dodge site? kidding is the smoke blue??? I had some black smoke at start up the throttle body was bad its all gone now

 

Not the pleneum as I had a APS kit put on there not long ago to fix that.

As for thes moke blue I thought it was whitesh blue but wasn't sure so I looked today and at first the first time I thought it was but the 2nd it looked more black. It's not a ton of smoke or anything so it's hard to tell what color.

 

black is better, i guess. that would be carbon (right?).
better to be that color than white.

 

It's not enough that it's easy to tell what color it is. I have a feeling I'm just over paranoid like usual but I don't know.