Cold start problems - throttle switch

[Benjamin Weste Pearre]

Hey...

My car recently started experiencing cold-start problems.  I can crank
and crank, and the engine just won't start.  Eventually it catches,
and then either it idles roughly at about 100? rpm (almost stalled)
for 20 seconds or so (?) and then I give it gas and it's happy
thereafter, or it just catches and runs perfectly.  Subsequent warm
starts are fine (usually).

The timing roughly coincided with me replacing the throttle switch and
MM hose.  I'd assumed that all the WOT runs I'd done had affected
something, but here's a new idea:

What if I mis-adjusted the throttle switch?  I adjusted its idle
position so that it was pretty sensitive to the throttle being
depressed.  What would happen if the throttle switch didn't close at
idle?  Say, with the engine warm it was closed, but when the engine
cooled off it opened slightly?  Would that make the car hard to start?
I don't think so, since I should be able to depress the gas and still
start fine (just how does the start cycle work in an MC engine?).  But
it's a thought -- could it be the problem?  Another reason to believe
that it's not the problem is that the car doesn't show any other
symptoms of the idle position not working, but possibly the switch
works better when warm...  The car's at the mechanic now, which is why
I ask here rather than re-adjusting it...

Thanks very much!
-Ben

--
Ben Pearre          1990 200TQA          http://hebb.mit.edu/~ben