rough idling

[sfd4]

I have a 2003 Windstar with 43,000 miles. Every few days when I start car it runs rough for a little while. Sometimes it runs rough when at a light.Most time runs ok ande never a problem while driving. No codes.Any ideas. 3.8 l engine. I tried injector cleaner. I also notice water or moisture when starting at the tailpipe.

[mark v]

This is normal for all vehicles at the first start up of the day, it is called "Condensation". When hot exhaust meets cold exhaust pipes the effect will be condensation that turns into water and blows out the tail pipe till everything heats up.

I cant believe you have never seen this before.

Originally Posted by sfd4

I also notice water or moisture when starting at the tailpipe.

[sfd4]

Yes I have seen this in most of 40 years of driving. Not to this extreme though. I am thinking maybe my rough idling is moisture in fuel which is causing excess condensation