Because watercraft engines may backfire, all powerboats (except outboards) that are fueled with petrol must have actually an approved backfire flame arrestor on each carburetor. Backfire fire arrestors room designed to protect against the ignition of gasoline vapors in instance the engine backfires.
You are watching: Eq-21 which of the following is true of a carburetor backfire flame arrestor?
backfire To undergo an explosion of prematurely ignited fuel or the unburned exhaust gases in an internal combustion engine
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