07 M8 backfires when shutdown hot.

[ak-dmk]

My sled is new although an 07, just bought it off the showroom in January. When it's hot and I shut it down, after idling for a couple seconds, it backfires. Does anyone else have this problem?

It's also pretty boggy on the bottom when I first start it hot but I'm assuming that's the fuel pressure problem I've read about on here.

Only mod is an MBRP can.

 

[AKM7]

Some people can run Can's on their M7's and others can't, not sure about the M8! I tried 2 different cans and they both caused bog so I took them off. My M7 will pop a little if I've really had it pinned in deep snow and its a little warmer outside! Yesterday up at Placer mine backfired for the first time of the season!

 

[JHG]

It happens, nothing really to worry about. There is fuel in pipe when you shut it down.

 

[MUZBOMB]

X2 my old 07 M8 did it all the time nothing to worry about and the bog is part of owning a 07 M8. Just means she is good riding:beer;

 

[ak-dmk]

thanks guys.

 

[XFIRE800]

The bog is most likely caused by the MBRP can since the 800 laydown motor doesnt like many cans if any ( some people can use them with no bog others can't) and i have heard the most bog issues with the MBRP can. If you let your sled idle for 30-60 seconds before you shut it down that should help the backfiring a lot, mine did the same thing for a while.

 

[sildoc]

The back fire happens with all makes from poo, doo, cat, on the larger engines. it will happen more when you are riding hard come to a stop and then shut her down. fuel in the hot pipe ignites causing a back fire. Don't worry about the back fire. Yami being a 4 stroke doesn't have this problem, but also doesn't need the back pressure to build hp.