Loss of power and lots of sparks out of my exhaust. What did I break?

rd1959 · 11-12-2020, 10:39 PM

Oh man, I'm sorry to hear that. I never ran the bike that hard. When I adjusted the valves I triple checked everything to make sure it was right.
You say it still starts and runs fine with no weird noises? Will a bike do that if one of the valves is toast?

I've just had a crazy thought- I wonder if those mud daubers or yellow jackets built a nest inside the exhaust and over heated the catalyst?

Last summer I found a couple of good sized yellow jacket nests, one under the rear fender, and one behind one of the radiator shrouds? Both of them were about 3 inches in diameter. That's when I bought the cover.

11-12-2020, 10:39 PM	#1
rd1959 Join Date: Jul 2017 Location: Monroe,NC Posts: 131	Oh man, I'm sorry to hear that. I never ran the bike that hard. When I adjusted the valves I triple checked everything to make sure it was right. You say it still starts and runs fine with no weird noises? Will a bike do that if one of the valves is toast? I've just had a crazy thought- I wonder if those mud daubers or yellow jackets built a nest inside the exhaust and over heated the catalyst? Last summer I found a couple of good sized yellow jacket nests, one under the rear fender, and one behind one of the radiator shrouds? Both of them were about 3 inches in diameter. That's when I bought the cover.
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