Hey guys,

My car hasn't been started in a bit over a month, and before that it sat for almost 2 months without being driven (it's a coupe used as a weekend car).

Anyway, yesterday I took it on a 200km trip and it was missing at idle.
It sort of came for 5-10 seconds then started idling fine during warm up.
Then after 1km of driving at the lights it started missing again, then went away and was fine for the rest of the 200km.

What could this be?
The plugs are about 3-4 years old, but only about 3,000km on them.

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Smoke Silver 1994 E220 Coupe Automatic
0 kilometers 6 September 1994
100,635 kilometers - 6 September 2010