Training Wheel Hero
Join Date: Sep 2009
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Help: Runs rough, bad idle and stalls.
I've been scouring the archives but no luck, hopefully someone can help me!
My bike is hard to start, runs really rough, and stalls if I'm not giving it at least a little bit of throttle. It wants to drop below 900 and I have to keep it at 1500 to 2000. I usually need to crack the throttle to even start the bike. When it does get running it sounds pretty lumpy, not smooth at all.
I pulled all the spark plugs and gave them a clean. They were covered in sooty black deposits, if you rubbed the tip on your skin you'd have a black streak there. I cleaned them and I can see the white inside, it's sort of carmel colored and spotty. I hooked up each cylinder's plug and laid them on the head, each one gave consistent purple sparks. The manual has peak voltage tests but if you can see it, isn't that good enough?
I opened the tank to look around and that's weird. If you hold the light at an angle it's super blue, like porta potty fluid. But shine the light in directly and the center looks beerish to the bottom. Is there a blue lining under the top of the tank I cant see?
I have it apart and I can see the idle adjuster is connected and functioning. However adjusting it doesn't do anything, the bike keeps dropping until it stalls.
I've done general checks as far as making sure all the connectors are snug and the wiring (appears) to be in good shape. One thing is I did lay the bike down on the right side. It started running rough until the wind knocked it down on the same, then it was smooth again. No trouble codes, I haven't seen the MIL flashing. I disconnected the MAP sensor when it was running, no difference. I have a PCIII that was on the right side so I disconnected that too.