01 7.3 white smoke at cold idle

97cherokee · Jul 27, 2015

hey guys i noticed my truck when i first crank it in the morning and back out that their will be a puff of white smoke. it wont smoke if its just idling from what ive seen. if the trucks warm and i rev it up a little their is no smoke that i can tell of. the truck does have 300000 miles with what i am pretty sure is the original injectors and heui pump. truck uses about a quart every 4000 miles so i dont believe it is oil that im seeing. is it an injector issue? truck does have new glowplugs, injector cups, uvch's, i rebuilt the turbo with a billet wheel due to some minor dusting. thanks for the help!

Arisley · Jul 28, 2015

It is completely normal.

ghohouston · Jul 28, 2015

How much blowby does it have? Turbo isn't the only thing that gets "dusted", the piston rings do too

97cherokee · Jul 29, 2015

arisley what do you mean its normal???? blowby is not bad, like i said it doesnt use hardly in oil so i dont think cylinder wear is an issue and im also aware that rings can get dusted too, but this compressor wheel had just started to get dusted due to a fesh hole in the rubber af boot.

Arisley · Jul 29, 2015

When injectors get a lot of miles on them, you will get some white smoke on a cold start.

ghohouston · Jul 29, 2015

97cherokee said:
arisley what do you mean its normal???? blowby is not bad, like i said it doesnt use hardly in oil so i dont think cylinder wear is an issue and im also aware that rings can get dusted too, but this compressor wheel had just started to get dusted due to a fesh hole in the rubber af boot.

And where do you think that dirt went after it sand blasted your compressor wheel?