>Unfortunately, saw a mid-70s camper catch on fire this weekend (next to a 
gas
>pump, of all places).  When I inquired, the station attendent said the 
cause
>was that it "backfired."
>
>The question:  What is it that makes these buses burn?
----
my 73 camper had a 77 fi motor in it.  After a few years with long summer
road trips i wore the thing out.  On thing it did in it's final throes was to
backfire and shoot flames out the tailpipe.  It only did this a couple times,
but hm, i suppose that could help a bus catch fire.