White smoke coming from motor and tail pipe and no oil was on the oil stick when I checked it

Could it be a timing chain, rocker arm... Thoughts ?

My 99 jeep is not a 4 wheel drive it is a rear wheel only.Mechanic referee to the problem as a death wobble.what could be wrong with it

Alarm light on instrument panel.
"P I" .
Turn key, nothing happens, does not turn over. Just get the alarm lights.

acceleration when i'm drive in it I need help what to look for and how to fix it please

is this the range sensor and if so can it be cleaned or does it need replaced?

Also it has over size tires which rub the fender do I need a lift kit or will a good pair of shocks do the trick ????

When I try to put my jeep in 4wheel high,it just grinds and does not engage,but I can drop it all the way down into 4wheel low and it goes right in w/o grinding and engages right,what wrong?