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Pulled it and cleaned it: definitely not air cleaner
Problem became worse yesterday on an aborted trip to Hamilton. (Son's birthday was tomorrow, now today)
Stopped on the highway for traffic at Oakville and heard a clunk, which I thought at first was mechanical.
Pulled off the highway, drove slowly and heard it again a few times. Up on the centrestand, and found only a loose chain cover bolt. Re-fastened that.
Tried again.... intermittent but solid noise.
Trip cancelled, turned back and went home. Stopped once more, put the bike on centrestand, listened for bearing noise. Noted the loose cover had removed a fair amount of surface oil from the chain.
Back on the highway
Same sound, but mostly on acceleration, regardless of gear, so it was not transmission.
At home I took the helmet off and drove a hundred yards along the street....same sound, but mostly under load.
Into the garage, back on centrestand.....check bearings, wheel and engine, using stethoscope.
Sounds OK.
Engine runs, revs OK, still has pfft chik sound, but something else of deeper tone I could not identify.
Left it alone for a while, until it cooled down, then started it again. Choked for a few seconds to start. ....now the engine revs freely but shakes intermittently at low RPM s, so I move to pre-ignition /possible detonation.
Very definitely timing, believe cam chain has slipped a cog or two, or that would be my diagnosis with the GS1100.
I do not know the internal workings of the B12 1st Gen engine yet, so I do not know what can be adjusted, how to do it, or, if it needs replacing, what is involved in that.
Any experienced advice on this?
.
Problem became worse yesterday on an aborted trip to Hamilton. (Son's birthday was tomorrow, now today)
Stopped on the highway for traffic at Oakville and heard a clunk, which I thought at first was mechanical.
Pulled off the highway, drove slowly and heard it again a few times. Up on the centrestand, and found only a loose chain cover bolt. Re-fastened that.
Tried again.... intermittent but solid noise.
Trip cancelled, turned back and went home. Stopped once more, put the bike on centrestand, listened for bearing noise. Noted the loose cover had removed a fair amount of surface oil from the chain.
Back on the highway
Same sound, but mostly on acceleration, regardless of gear, so it was not transmission.
At home I took the helmet off and drove a hundred yards along the street....same sound, but mostly under load.
Into the garage, back on centrestand.....check bearings, wheel and engine, using stethoscope.
Sounds OK.
Engine runs, revs OK, still has pfft chik sound, but something else of deeper tone I could not identify.
Left it alone for a while, until it cooled down, then started it again. Choked for a few seconds to start. ....now the engine revs freely but shakes intermittently at low RPM s, so I move to pre-ignition /possible detonation.
Very definitely timing, believe cam chain has slipped a cog or two, or that would be my diagnosis with the GS1100.
I do not know the internal workings of the B12 1st Gen engine yet, so I do not know what can be adjusted, how to do it, or, if it needs replacing, what is involved in that.
Any experienced advice on this?
.
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