hi guys i have at 93 dakota 3.9 that only has around 70 k on its.last week it just started to smoke from the exhust.i changed the oil and sparkplugs.i had 2 bad rear plugs.now the truck smokes from the air filter and from where i add the oil.

give me the bad news

 

What kind of condition is your PCV valve in? If that's stuck closed then the pressure has to get out some how.

If your PCV valveis ok then I would do a dry and wet compression test to see if your rings are going out on you.

 

yup, sounds like your rings are shot