Quote:
Originally Posted by ol'George
FWIW:
The the fuel shutoff solenoid does multiple things beside helping to eliminate soiling yer britches when it backfires. 
The EPA had a hand in it to prevent raw fuel from entering the combustion chamber, adding about as much pollution as a flea fart.
Also it tends to prevent "dieseling" which is the engine continuing to run-on, after the spark is stopped because the combustion chamber is hot enough to cause ignition (usually called preignition)
So now you know all the reasons for it.
Its a good device when it works  |
It has a place, but it also adds a new failure point 
Beats a manual shutoff for accessibility, though.
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