Backfire "Pop" When Engine Shuts Off - Normal?
 

Whenever I get done riding and turn the key off, the motor slows, and a half a second after everything seems to stop, a fairly loud "pop" comes out of the exhaust. It's not extremely loud, but it has a nice "pop" sound to it.

What is it, and how come it happens? Is it normal? If not, how can I fix it?

Thanks!!

Sounds like advanced timing .... just like on a car. Do you have the service manual for the bike? If not, download it from this forum (check the stickies in general)

Yep, I just downloaded it earlier today. I'll check it out when I have time, it's not a big deal, just kinda annoying when I turn it off.

I'd go right to the section on timing. That should fix the problem right up

Hmmm, I didn't find a specific section on the timing, just that it's controlled by the ignitor.

I could be wrong?

I don't think the timing is adjustable.

Yeah, that's what I found....

Hm, well i guess its not adjustable then. Maybe the ignitor then??

Just to add to the advanced timing possibility, when I rev the engine pretty high and then let off the throttle, it sometimes lets out a few minor pops, but they aren't very noticible. This is probably normal, and it's not a big deal to me, unless something mechanically is off.

See your other post that i answered, might be crapped up in the carbs from sitting.

I think you might want to get it checked for the over running its doing when shut off, unless the seafoam i suggested in the other post clears it up.