Came back from Afghanistan in August. My 97 now smokes for a little while upon start up. My wife drove it while I was gone to keep everything turning. It has fresh fuel. Everytime I start it up after sitting for a few hours or over night, it smokes pretty bad for a little bit. The longer it sits, the longer it smokes. Then it clears up. Tell tale sign of a (some) leaky injectors that are bleeding during down time?