Cold Start Issues...continued...

[S4 John]

For the last month my car (STG 2)has a hard time starting in the morning. It will crank for a while then start up and die out. It will do this a few times and then finally idle. Once it idles if you give it gas it will sputter/boog then rev up. Once warm the car run normal. It gets significantly worse when the temperature drops lower. The car will start right up after it is warm. I first ran stp gas treatment through it. No difference was made. Yesterday, we vag'd the car. There was an intermittent 02 and cylinder 3 misfire code. I had changed the 02 in the summer and never cleared out the code. We cleared them out and they did not come back up after running the car for a while. Does anyone have any ideas as to what it could be? I have no CEL. Could it be a CTS or a problem with the EVAP system? I got a wiff of gasoline driving. But, I think it maybe the shitty cars infront of me. Any help would be greatly appreciated!

Merry Christmas!

John

[VinNyS4]

Did you fix the misfire? Most likely its the misfire, on my brothers m3 when his coilpack went, on a cold start the car died a couple times till it started to warm up a little once it was replaced never happened again. I know they are two different cars but, I would fix the misfire if its still there and see what happens. Goodluck

[S4-ORCE]

Fuel pump check valve