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Discussion Starter · #1 ·
ok so after I run my sled real hard, if I shut it down without letting it idle for a minute or two.. it will backfire after it shut it off.. its a LOUD bang, sometimes a flame will shoot out.. Is this bad or harmful? or is it just because I haven't let it idle long before shutting it off.. I don't think its a big deal, but it makes me jump everytime, and everyone around me.. its kinda funny when it happens at the parking lot of a resteraunt and everyone jumps thinking its a gunshot or something lol
 

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Just flip the choke to make it idle down. Wait 5 seconds then shut her down.

Should help quite a bit.

Sent from my HTC Vision using Tapatalk 2

 

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Discussion Starter · #6 ·
Ok thanks guys.. just needed some reassurance for piece of mind.. its a brand new engine so I got a little nervous
 

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Backfiring all the time is not good. It can blow the crank seals.

Backfires come from unburnt fuel left in the can.

Let your sled come to a complete idle, then wait 10-15 seconds. This will burn off all the fuel and you won't have the backfire.
 

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I find that it does it more for sure after a hard run and not so much when just doing easy trail miles. Its a build up of unburnt fuel in the exhaust. Sometimes we can get pretty good at waiting about 3-4 seconds and timing it, "BANG"!!!!!!!!
 

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The sled could be overheating, carbon build up on the plugs. Not something you want, as stated that backfiring can take out a crank seal real quick.

Check your plugs, change them if need be and make sure the gap is correct. As stated let it idle down for a bit and shut her off.
 

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My 05 SS does this, I think because of a high idle I can't get fixed. And friends 07 500ss with only like 3000 miles does it too
 
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