My Workhorse smokes sometimes

[streetking]

I just traded my 99 club car cart in on a 2002 Ez Go Workhorse, the guy I traded with told me it smokes like a freight train sometime and then sometime not at all, the little bit I have got to ride it proved him right, sometimes may start it and no smoke even after 30-40 minutes of riding, then sometimes you start it and she is ready to fog the bugs... I checked and there is some oil in the bottom of the air box, what causes this ? The workhorse has a Jakes 5 or 6 inch lift, does that change anything on the oil level ? I notice the cart seems to set more level than the the lower front that most stock ones seem to have..... Thanks from the NEWBE