Required Equipment
What is the purpose of a backfire flame arrestor on an inboard gasoline engine?
Answer
To stop a backfire from igniting fuel vapors in the engine compartment
A backfire flame arrestor is required on inboard gasoline engines. It contains any engine backfire so the flame cannot ignite gasoline vapors that may have collected in the engine compartment.
Source: U.S. Coast Guard / Office of the Federal Register — 46 CFR 25.35-1, Backfire flame control — https://www.ecfr.gov/current/title-46/section-25.35-1
Not the answer
- To increase horsepower
- To make the engine quieter
- To cool the exhaust
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