bad valve seals??

[ryank99]

ok, so my dang truck started smokin out of the exhuast this week. started off with just a little smoke, now its really noticable. it only smokes on start up during the day or a warm engine, not first thing in the morning?? it will stopo smoking within about 5- 10 seconds of idle. the smoke is white or a bluis white color, i cant really tell. could it be valve seals or maybe a leaky head gasket burning coolant?? would it smoke constantlay if it was a leaky HG? some advise would be great. i guess i need to do a compression test this weekend also

i guess i need to add that i ckecked my coolant and it DOES NOT have any oily residue and the i checked the oil, it DOES NOT have any milkyness to it. does that mean its 100% positive i DONNOT h ave a leaky HG??

[SunlitComet]

blue smoke is oil. unless it is constant with cross contamination to match your most likely have bad seals somewhere. You could probably forgo the compression test but take a gander for a suddenly oily plug though to pinpoint the cylinder.

[ryank99]

any thoughts on why it doesnt smoke on the first start up of the day??
bad pcv valve maybe? im just a little dumbfounded about it not smoking in the morning, but smokes every time i start it thought out the day

[SunlitComet]

probably because oil your oil residue drained to the bottom overnight so the seals are probably not as soaked like they would be after running a while.

[ryank99]

that makes sence. but the plot thickens....
so quick over view of just today -
started in the morning, no smoke
drove about 20 miles to day care, truck was off mabye 5 minutes, started and smoked
got to work, started about 1 hour later , NO SMOKE!
started about 2 hours after that, NO SMOKE.
WTF!!!??
so now it seems its intermidant.
i'm wondering now if when i seafoamed the lower intake while changing my injectors if maybe now its knocking loose carbon deposits and burning off pieces of carbon??
...:emotions122:

[SunlitComet]

A distinct possibility. You may be better off waiting it out to see if it gets way out of hand.

[ryank99]

good call on waiting it out....
it stopped smoking on start up friday and on saturday, my p0304(misfire cylinder 4) code went away.
so i'm pretty confident a valve was sticking due to some build up.
looks like all is well withthe engine...now i can start spending time and money on the good stuff like exhuast, and cold air kit :rockit: