not so good smoke

[78cumminsconv]

I have a 02 ex-cab sb 4x4 psd with an auto. I have had the truck a couple years it recently started smoking a bluish, white smoke almost all the time and it has an intermittent misfire that comes and goes and ranges in severity. Sometimes it misses just enough to be a pain and then ever once in a while it won’t hardly pull itself the miss seems to occur while already running it will be sitting idling and start running like crap. I have replaced the valve cover gaskets and wiring harness on both sides it has ben on a couple different scanners and i can not remember the code it throws. i will post that asap.



:doh:

 

[Dieselkid]

Sounds like a blown turbo seal. But I would also check the injectors, that could also trigger a misfire, that's usually what a misfire is, most of the time its a injector issue, whether it be a cracked injector cup/sleeve, or a bad injector all together. But I would check the following as well.

Blueish smoke relates to a an Oil/turbo issue
white smoke is coolant
greyish, is injector issue.

Are you throwing codes, make sure you pull them up next time.

 

[fbilly420]

Check for oil in the exhaust pipe. (pretty noticable) Check for shaft play in the turbo.

Get the codes read and go from there for the miss.