Kawasaki Concours Forum

The C10, aka Kawasaki Concours - The Original => The Bike - C10 => Topic started by: Eseljaye on October 06, 2020, 11:46:47 AM

Title: Pops no bangs
Post by: Eseljaye on October 06, 2020, 11:46:47 AM

98 C10. 22k miles, Carbs rebuilt/serviced about 500m ago.
Once warm/up to running temp, I get mild pops (not real backfire/bangs) from exhaust when decelerating. As far as I can tell carb boots are tight (now) as are bolts holding exhaust header to motor.
Any thoughts on this?
Thanks

Title: Re: Pops no bangs
Post by: Boomer on October 07, 2020, 01:37:17 AM

If you have aftermarket or modified mufflers then it is probably caused by the PAIR valves introducing air into the exhaust.
If you have OEM mufflers (unmodified) then it's probably a leak in the exhaust where the mufflers join the headers, or else the balance pipe under the engine has a hole in it. Either way, air is getting into the exhaust and burning the unburnt gas in the hot exhaust on deceleration.

Title: Re: Pops no bangs
Post by: Eseljaye on October 07, 2020, 07:23:00 AM

OEM cans.
Time to take a much closer look at the whole exhaust. yip   ee.
I'm getting quite adept at removing/replacing the fairings. Anyone using "quick release" pins or similar?

Title: Re: Pops no bangs
Post by: Boomer on October 07, 2020, 07:36:28 AM

I replaced all my screws with Murphskits Allen screws and use a Bosch IXO screwdriver to speed up pulling the fairing sides and belly pan.

https://murphskits.com/deluxe-black-stainless-screw-kit-for-your-concours-1/ (https://murphskits.com/deluxe-black-stainless-screw-kit-for-your-concours-1/)

https://www.amazon.com/BOSCH-Professional-Cordless-Electric-Screwdriver/dp/B00C09PS3S/ref=sr_1_2?dchild=1&keywords=bosch+ixo&qid=1602077725&sr=8-2 (https://www.amazon.com/BOSCH-Professional-Cordless-Electric-Screwdriver/dp/B00C09PS3S/ref=sr_1_2?dchild=1&keywords=bosch+ixo&qid=1602077725&sr=8-2)