redlsteg (guest)  |
| Mon Sep 27, 2021 12:21 pm |
| Carb tuning with Pods |
2003 Bike with around 20K miles.
I've decided to get back to riding my bike after it's been sitting on and off a few years. I had put K&N Pods on a while back and never really got the tuning correct. After cleaning the carbs I put in a keihin 108 main jet and added a single #4 washer under the needles. At wide open throttle it seems to run great. Mid range was still a bit jerky. The big problem was that at idle it was so rich the plugs were fouling.
Now to eliminate any of my misinterpretations of the fuel mixture, I built a test pipe with a wideband O2 sensor that went between the manifold and the muffler. This confirmed I was seeing <9>17 but this time I was able to adjust the screw and bring the AF down to 13 or so. Now the bike idles and revs nicely but I'm still seeing some hesitation around 5-7K.
Any ideas? I considered that maybe the washer was hanging up on something and the needle wasn't fully seating. I also wonder if the spring that seats the vacuum diaphragm is weak.
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Carb tuning with Pods — redlsteg, Mon Sep 27, 2021 12:21 pm -
It's a common issue. — MIK, Tue Sep 28, 2021 10:33 am
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Pods — jkv45, Wed Sep 29, 2021 9:21 am