My 2005 nissan altima has been experiencing hard start issues over the past year. It usually happens when the engine is hotand will eventually start after a few tries. If it's been sitting for more than 30 minutes it starts up fine. My check engine soon light comes on as a result and I finally went and go the codes read which said it was the crank position sensor a common issue with Altimas. I went and had a local mechanic replace the crank position sensor and when I went to pick it up at the shop it wouldn't start! Sure enough the mechanic had just moved it outside before I got there so the engine was hot. He's going to look at it again tomorrow but what could it be?