A few weeks ago my van started missing, hesitating, and acting maybe starved
for fuel.  Sometimes the miss would go away after it warmed up.

For want of a better idea, I poured a can of Sea Foam injector cleaner into
the gas.  In a day or two it seemed to get better, but it still runs rough
when it's cold.  Now, however, it seems to run okay once it's warmed up.

I know when I go out to start it this a.m. in a chilly 47F southern
California morning, it's going to run rough until a few miles down the road.

I have no idea what it might be, but since I don't have a local mechanic
that I trust I'm reluctant to just turn it over to someone and say fix it.

I know it has a cracked head, but it's had that for a couple of years now.
I'm not losing any coolant, no excess coolant pressure build up, no sign of
anything unusual in the exhaust.

I'm hoping list members can offer some ideas as to what the problem might
be.

Paticulars:  '90 vanagon GL Westy AT, box stock, 214,000 miles on original
engine.

TIA, Bob