Hey guys. I recently purchased a beautiful K75.
I had some problems come up, and was wondering if you guys could help me.
First off, the bike will not idle correctly. For some reason, no matter what I try, the bike does not want to seem to idle at anymore than 500-600rpm's. I've tried adjusting the idle, but the bike still doesn't seem to really raise the RPM's.
Another problem is the TPS. Could someone explain how to correctly set it? Thanks.
Third problem is that the bike surges. A lot. Basically, I will hold a constant throttle position, and the bike will speed up and slow back down constantly. Makes lane-sharing very interesting.
Well anyways, I rode back home today on my 13 mile commute, and my bike was really acting up. She was surging quite a bit. But here's the weird thing: After like 4 miles, the bike would not accelerate. I was cruising around 70-75mph, and I had to twist the throttle all the way open to maintain speed. Then after a while it started surging, and if I let of the throttle a little, it would start accelerating. Did this for the rest of my 13 mile commute. Thank god for no traffic.
Well when I got home and I looked at the pipe, which is the stock stainless k75 pipe, it was bronzen. Here's a picture:
This led me to believe that the bike was running extremely lean.
Here's the weird thing: I pulled the first two spark plugs and lo and behold, they were clean as a whistle. No carbon at all. Then I pull the last plug, it has a lot of carbon deposit on it. For some reason, while the first two cylinders were running lean/okay, the 3rd cylinder is running extremely rich.
Anyone here ever had this happen? It's really weird IMO.
Oh, and on deceleration and acceleration, my bike will pop and backfire. Just some more info.
If any of you guys could help me, that'd be great.