I have a 1995 Z28 M6 with 26,000 on the clock, I have owned the car for two months.

Right up to this morning it has been perfect, the car had been sitting overnight as it always does before I set off to work. Normally I only need to turn the key for half a second before it starts up, this morning I put the key in the ignition, turned it, I felt it fire up but then it died straight away, I tried a couple more times and the same happened

I had to hold it on the starter for ages before it finally fired up, I then drove to work as usual and it ran perfectly fine. When I came back to the car in the evening after work, I thought I may have to get a taxi home if it had got any worse, but there was no problem at all.

I would like your opinions on what this might be, damp opti? sensor problem? It was a bit out of the blue seeing as the weather is warming up and all

This car is my daily driver and I need it to get to work, I can't have it not starting on me