It sounds like the spark plug hole in the head may be damaged. Can you get the plug out to check? Plugs should always be removed when the engine is cold, especially with aluminium cylinder heads. If you can get the plug out and the threads are damaged you can a shop to put in a Heli-Coil to repair the threads.
SOURCE: 2008 grand caravan rear brakes
Older vehicles with caliper parking brakes rotated their pistons in a ratchet effect.To retract those they needed to be pushed in and rotated at the same time.I cannot stand rear disc brakes.Seems they fail way too often.GM had that issue with its W body cars (1987-up),pads would wear to steel in 6 months or less. Did the face of the piston have 2 or 4 square/rectangular/round holes in it? There is a tool to hook onto a ratchet to let you turn and push the piston back in. If you banged it in, the system may not work correctly.
Go and rent the Caliper Brake Kit from Auto Zone, it make your brake job way easier. This tool compresses the piston while it rotates clockwise. So if you are going to do your own rear brake job get this tool or something similar.
Good luck and hope this helps. Keep me posted, Recap: The cylinder does not compress on the rears, it screws back in. A special tool for rear calipers works best but a pair of needle nose pliers will do in a pinch.
SOURCE: torque setting on the rear wheel of a 2008 buell
axle torque is 48-52 ft lbs pinch bolt is 40-45 ft lbs
SOURCE: I have a Buell 2008 lightning xb12ss, its just started
Some early 2008 models have issues with the Idle Air Control motor that can cause those symptoms. This would be covered for replacement under warranty.
These symptoms could also be an intake leak.
SOURCE: 2007 Buell Lightning CityX XB9SX
The factory manual is part number 99490-07YA, available from your favorite Buell dealer, or you can also get it from Americansportbike.com
SOURCE: loses power at 4500 rpm, carbs are clean and has
If your carbs and plugs are fine you may wish to check into you wiring harness to see if you have a cyclinder not firing due to a problem with wiring (frayed or disconnected).
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