I purchased a new John Deer 700 series mower with a 23 hp Kohler engine ,thay engine had problems made terrible noise Dealer said they could;nt find anything wrong ,it finally threw a rod or rod cap and they replaced with a new 19.4 hp Kohler . The new motor has plenty of power and runs good the problem I have with it now is when it's sats in my shop for a week or longer when I crank to mow it floods my shop with smoke ,it's seems to be oil smoke not gas smoke ,after the first initial cranking it does not smoke and if cranked every couple of days it does not smoke. The local John Deer Tractor dealer shop manager says this is common for Kohler engines and is not concerned but I am