Volks,
I've got a brand-new (~3000 mi) 2.1L that runs like a champ once it's
warm.  Here's the mystery problem that only happens when the bus is
started from cold:

1) runs _roughly_ for the first two minutes or so
2) exhaust smells like fuel during that time
3) six out of ten times, the engine abruptly shuts off about thirty
seconds after startup.  No warning, no drop in rpm, just screech! and
it's off.  It starts right back up and idles fine after that.

Often, once the engine gets revved to over 2,000 rpm the rough idle
disappears.  Where do I start troubleshooting?

Best,
d.

1990 GL -- "Mudskipper"