Sort of a white gray, blue mix. I have not pulled the throttle body. Is this difficult to do? Do I need gaskets or something to get it back on?

 

You dont need to pull it off completely, turn the key to run but with the engine off and put a brick or something on the gas pedal (opens the throttle blade) and wipe a rag or paper towel on the inside of the intake.

 

Went out to follow your instructions, and it started raining! I will check this out as soon as it stops.

 

You in the Houston Area? It was pouring here. FINALLY!

You won't need a new gasket when you do take it off. Too get

it clean you will have to remove it, but to check for access oil you can do as Atomic instructed.

 

[QUOTE=Junkyard Dog;4811886]Sort of a white gray, blue mix.

That would be OIL.

 

my truck has 120K miles.. i also have no smoke except at start up.. and what is more crazy is it isnt at every start up... hot or cold doent make difference either..

 

i have electronic throttle....

 

DBW or DBC will not make a difference. High mileage engine's and the use of low viscosity oil are usually the cause of the smoking on startup. I run atleast 10w40 in my HD. 15w40 in the summer.

 

I am running 10W-30 Valvoline, and have since new. Remember, though, this problem showed up last year and went away for 8-9 months - did not use a drop of oil or smoke at all, then returned, which leads me to believe it is not rings or valve guides or seals - those do not just fix themselves for no reason.

Oh, no doubt! Lots of black soot in the tailpipe, too. Like I said, a few weeks ago it was not using a drop of oil, and now it is guzzling oil like a sailor after pay day! I was just answering an earlier question.

And it is still raining! No rain for three weeks, and then somebody asks me to do something outside, and it will not stop. I need a garage. Is the purpose of this check to see if it is sucking oil up through the PCV (actually, orifice, no "valve," it's a 2005).

Also, valve seals - is there a test for this? I have changed valve seals on an older Pontiac before - it was easy since I had to pull the heads for something else, and I bought this awesome but too expensive tool for valve spring compressing when the head is off the vehicle, but changing them on the vehicle sounds like a pain, and I would like to avoid it if possible. I do not know how to check the valve seals.

 

From my first post. What keeps the engine from sucking oil up this other tube? If it has a screen or filter or baffle, could this passenger side valve cover becoming clogged cause the engine to suck oil up through the PCV? The purpose of this side is to let in fresh air, correct? If it is clogged, then there is a really high vacuum situation at the PCV/orifice on the driver's side.

Why would the PCV issue happen only at start up? It seems to me that it should smoke anytime there is a high vacuum situation. This is very confusing.