<VV> Idle vs shut off

[Sethracer at aol.com]

In a message dated 4/1/2008 1:20:13 P.M. Pacific Daylight Time,  
gyoungwolf at earthlink.net writes:

If the  data is interesting and sweeping enough to cover Corvairs, please 
post, but  otherwise please send me a private reply. (Yes, I know the major cost 
problem  is educating the thousands of illegal students we have, but being a 
teacher, I  am not allowed to go there, so the gas savings is fine  :-).
Thanks,
Grant 



Short answer - If the bus has Fuel Injection, always turn it off - any  
period more than 20 seconds or so. The FI systems will restart without use of  
extra fuel.  If Carbureted, turning it off hot may cause other issues,  (fuel 
boiling, etc.) leading to more fuel use- especially in hot Florida. And in  the 
cold times, chokes, etc would cause more fuel usage for start up, not  to 
mention a generally richer running mixture with carbs. I would pick a idling  time 
period for Carbureted buses, say two minutes. If more than that turn it  off, 
and always turn off Fuel injected vehicles. This applies to most cars as  well, 
including Corvairs. - Seth Emerson



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