Apex Back Firing a lot...any ideas?

[stoutner]

Hey guys, when i'm running on the asphalt and let off the gas at the end, I am getting a lot of backfiring. I also get it on the return lane if I rev it up and let off. It only happens when I am off the throtte. I notice it in the winter also but not quite as much.

Anybody know what may be causing this? If it is a fuel rich/lean problem, I can adjust it through my controller.

Any ideas would be appreciated.

 

[Viper_Dave]

My Attak did this after a LONG WFO run in the Western UP this winter. Noticed afterward that the exhaust seemed rather loud. Found a cracked exhaust clamp on the flex pipe to collector pipe. When I removed the tank and other STUFF, found it and lots of gunk blown forward on to the motor. Has since been repaired and is much quieter!!

Dave

 

[RX1-er-2005]

Yep that's usually symtoms of leaking exhaust dounuts...or cracked exhaust manifold when you let off the throtle and she backfires I'd check them out first.

 

[stoutner]

Thanks, you guys are probably right. I have noticed a slight "ticking" sound when I first start it up. The ticking does sound like an exhaust leak.

I'll check it out.