Anyone know anything about spark arrestors? What makes the spark arrestor chirp like crickets? It's driving me nuts. I took the arrestor out and it stops, I put my finger in the exhaust(when cold) and put pressure against the side of it and it stops. Is it burnt out or how can I make it stop?
Mike

 

My 05 Honda Rubicon was making the same chirping noise recently too. I adjusted my valves and started it back up and the chirp was still there. Eventhough the valves were do, it did not help a lot with the chirp. So i removed the 3 screws on my tailpipe and pulled the tip out and the chirp went away. I have no clue why the stock tip develops the stupid chirping. So i bought an aftermarket powertip for my ATV off EBAY for around $50 and relplaced the old tip with it. The tip comes with a spark arrester screen that makes it legal and increases the air flow making my Honda have a tad bit more power and makes the exaust a little louder and more throaty, but nothing too loud to annoy me. I think it now sounds nice, and anything beats that bird chirp that it was making before.