[Tigers] Carb Fire Research

[Stu]

I've been doing some research, and found an interesting video:

https://www.youtube.com/watch?v=d7AkcjnCTVU

To summarize, this guy does a good experiment that proves that some
components of normal gasoline boil at around 170F.

Our engines are usually well above this, so when we stop it's safe to
assume that the underhood temperatures spike, heating up our carbs, and
everything else.  So there could easily be some boiling in the carb  bowl.
And once the 170F components boil off,  the temperature rises even more.
When trying a hot restart, new fuel is introduced to the much hotter carb
when the pump comes back on, perhaps there could be a few moments of
additional, perhaps more violent boiling, blowing vapor and fuel out the
vent.

Last weekend I tried recreating the problem.  Similar hot day, drove around
the same loop, etc.  Parked and waited 10 minutes, about the same time as
before.  I had cleaned the top of the carb, so it was obvious that nothing
had come out when I opened the hood and looked  But listening closely, I
thought I could hear a faint sizzling sound from somewhere within the
carb...   I did not try a restart, since I hadn't seen this video at that
point.

Any opinions?

Stu
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