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Topic: TBS readings FJR 1300 Gen II  (Read 1332 times)

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shanewebb32
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« on: July 10, 2020, 12:19:01 pm »

Hello!

I have a Gen II (2010) with 45K miles and am on the warpath against handlebar vibrations. I am in Norcross GA, so the elevation is 1030 ft and I don't think I need to adjust the readings for altitude.

I determined operating temp to be reached when the fan activates.  The haynes manual says my reference TB is #3 which reads 190mm at operating temp, but it should be between 220 and 280 mmHg.  

I synced the TB #s 1,2, and 4 to #3 and adjusted the idle speed to 1100 RPM at operating temp but I am still getting uncomfortable vibrations, but they have improved slightly.

Questions:
-Should I be concerned about the low vacuum reading?
-Can (and should) #3 be adjusted to 250mmHg then resync the others?
-Would correcting #3 make any difference or just hose things up further?

If interested here are the other things that have been done that might impact vibration:
-Progrips with Grip Puppies
-new sparkplugs
-oil recently changed(within 200 miles and one month of use)
-new and properly balanced tires (RoadPilots)
-HVB bar ends (just installed yesterday and will test them out on a ride tomorrow)

I plan to re-torque the engine and exhaust bolts this weekend as well.

Thanks in advance for any help you can offer. This has one has been frustrating!
« Last Edit: July 10, 2020, 12:23:37 pm by shanewebb32 » Logged
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SLK50
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« Reply #1 on: July 10, 2020, 01:43:13 pm »

Have you checked / adjusted valve clearances?
Run some Ring Free through a tank or two to decarbon cylinders?
Verify strong spark to all four cylinders?
Re-torque steering head bearings?
Check for loose or damaged front wheel bearings?
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