I'm not sure where to post this, so apologies if it's the wrong place.
Has anyone had any experience with a faulty carb tune gauge? I have had the same Emgo dial gauge for 5 or 6 years and I'm starting to think it's part of the cause of years of problems I've had.
I recently purchased a Kawasaki Concours and everything is running pretty good. I just got back from a 2,000 mile or so trip, however I know the idle isn't spot on. I've synced the carbs a dozen times, but can't seem to get it to smooth out.
So here's why I'm thinking it's the gauges:
1. I noticed that gauge 4/cylinder4 didn't rise at the same rate as the others when throttle was applied.
2. I tried switching the vacuum lines around to determine if it was a carb boot vacuum leak or a leak in the vacuum line going to the gauge. It appeared to be the vacuum line, so I went ahead and replaced all the lines since they were several years old and have been used on several bikes.
3. after replacing the lines I noticed that gauge 4/cylinder 4 is still off. For example, lets say all gauges read 5 (pounds?) of vacuum. #4 will read maybe 7 or 8. I can adjust it to be like the others (in sync) but the idle gets rougher. If I take the line from the #4 cylinder and place it on the #3 gauge it will give a very different reading.
4. As I sat and stewed and drank, I started thinking. I have never been happy with the idle on any of my bikes and I have had trouble with the #4 cylinder on all 3 bikes I've used this gauge on.
So, am I using an inferior gauge that's faulty or am I just grasping at straws to why I can't get a sewing machine smooth idle out of this machine?