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Old 10-24-2018, 09:48 PM   #58
Senior Member
Join Date: Aug 2011
Location: Battle Ground WA
Posts: 272
Default Re: Terriable backfiring

Originally Posted by daren007 View Post
how can an electrical issue cause a backfire?
Easy, if the spark is momentarily interrupted, raw air/fuel mixture gets into the exhaust. Then, when ignition is restored, and fire goes into the exhaust, boom, as that unburned mix explodes. Anything that causes a misfire can cause a backfire.

Don't believe me? Drive your A along and turn off the key for a second or so, then turn it back on. Boom. I once destroyed a muffler when scaring my neighbor. He had the last laugh on that one, but it occurred when I was in high school, back in the '50s and I have since gotten a tiny bit smarter.
Subscribed to the KISS principle!
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