I have sometimes have trouble starting my A4 Audi Avant when the weather is at freezing. I start it in the morning and drive to the post office (2 miles) and when I try and restart after sitting a couple of minutes the engine cranks but the engine does start, so far after trying and letting it sit and trying it a couple of times it starts.
I have already replaced the battery and the spark plugs and it seems to crank over fine. Once it starts it runs great it only happens when the temp is at or near freezing, this problem started last winter but the weather warmed up it went away and all summer it started everytime with no issues, the problem started again when the weather got cold. Does anyone have a clue what would be causing this?