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TownsendsFGR...I read your link to the FJR forum. It makes sense and I will refine my setting that way. FinalImpact...I realize my method was a bit crude but it did show me that the setting was off. I opened the throttle part way and measured from the high edge of the open butterfly to the top...

OK, just finished another round and this feels good. I used a machinists steel rule to check butterfly leading edge heights at partial throttle openings. Neither the original butterfly sync setting nor my changed one put them in exactly the same position. After some work they were as close to...

Before, I have restrictors

Thanks, It is the original paint mark. I'll set it back and check butterfly positions. It may be possible that the screw was previously turned one full turn in or out so that the paint mark ended up in the same location ? I don't think I have any leaks through rubber. One more clue. I briefly...

Is there a procedure for that ? I don,t see it in the manual. It is marked with paint so I can put it back where it was.

Making progress. I did the checks suggested. Coolant and air temps are good. TPS is good. Coolant is full. I tried adjusting the butterfly proportioning screw. Turning the screw in 1/2 turn brought the idle down. At this point I found the point at which the idle adjust screw started to affect...

Both cables have slack

Thanks for the help. All the plugs are present in the sync hoses. TB clamps and boots are good. There is slack in the return cable I didn't run with the airbox off. Will try that tomorrow and check the coolant level. I'll check temps in the diagnostic mode. I rode today in 80's. At these temps...

I took the airbox off and can,t find any obvious problems there. All of the hoses are intact and where they belong. I should be able to do the sync this week when the fittings arrive. Another clue....ambient temperature makes a difference. The colder it is outside, the higher the idle. Engine...

Just bought all the parts locally to make a monometer save for the Dorman bits which are ordered now. Going out to inspect the sync hoses etc. Thanks for the help ! Steve

Thanks for the replies. Seems to be a vacuum leak. I'll go looking. Just read the make your own manometer thread. A project for today. Steve

Hi all, New here. I just bought a 2006 FZ6 for a great price with a few issues. Nice bike. My other is a Triumph Sprint RS. The one that is baffling me now is the idle. When warm it idles around 1680 RPM. I found the idle adjust screw but turning it has no effect on idle speed, up or down...