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K1200 / K1300 Forum / Throttle at low revs
« on: April 19, 2021, 05:14:57 pm »
As a frequent lurker, and rare contributor, I come with a question for the experts here....I've read through this thread, and am hoping my problem has something to do with one of the two parts Costas mentions...(https://eurokclub.bike/index.php?topic=756.0).
Background: K12s 2005, slowly closing in on 80k km....had a head gasket leak last year, and took it to the stealers for the replacement. Following that service, I did a fairly long 7 day tour from Geneva through Livigno, Stelvio etc...and when I arrived home everything seemed fine. Put the bike in the garage for the winter...(I just disconnect the battery for the 4 month hibernation).
Current issue: I got the bike out again a couple of weeks ago, and on the first startup, heard a fairly grindy sound from the timing chain side (all recall services have been done at the dealer, tensioner/oiler). I find that sound has occasionally happened in the past...and not had problems afterward. I figured after a long sit, it was less lubricated on the first turn over. But, now I have what I assumed was 'stuck throttle bodies', but after reading the above mentioned thread am wondering if it's one of the parts quoted above.
Symptoms: Idle seems slightly strange, but not disconcerting, maybe a tiny bit high? Acceleration from a stand still feels like it's missing a beat, or gurgling or something..honestly it makes me think of a chopper's sound...after it passes 2k rpm, it snaps out of it and accelerates as it should, and humms as it should. I rode it for an hour the other day, thinking maybe there was condensation or something causing misfires and that it could work it's way out...but hasn't made much difference. No other symptoms, decelerating is fine, doesn't die at idle. On the autoroute I noticed it sort of lacks power when I try to accelerate quickly....
Any suggestions? I don't have any tools, so I will probably have to go back to the dealer anyway...but was curious if you could help me with a diagnosis.
I could try to add a video if that would help.
Many thanks!
Wait a minute, this symptom describes issue with the idle control system and not the bodies. IMHO your bikes faces an issue with the idle control device s/n 13717705442 or the valve under s/n 11737681005.
Background: K12s 2005, slowly closing in on 80k km....had a head gasket leak last year, and took it to the stealers for the replacement. Following that service, I did a fairly long 7 day tour from Geneva through Livigno, Stelvio etc...and when I arrived home everything seemed fine. Put the bike in the garage for the winter...(I just disconnect the battery for the 4 month hibernation).
Current issue: I got the bike out again a couple of weeks ago, and on the first startup, heard a fairly grindy sound from the timing chain side (all recall services have been done at the dealer, tensioner/oiler). I find that sound has occasionally happened in the past...and not had problems afterward. I figured after a long sit, it was less lubricated on the first turn over. But, now I have what I assumed was 'stuck throttle bodies', but after reading the above mentioned thread am wondering if it's one of the parts quoted above.
Symptoms: Idle seems slightly strange, but not disconcerting, maybe a tiny bit high? Acceleration from a stand still feels like it's missing a beat, or gurgling or something..honestly it makes me think of a chopper's sound...after it passes 2k rpm, it snaps out of it and accelerates as it should, and humms as it should. I rode it for an hour the other day, thinking maybe there was condensation or something causing misfires and that it could work it's way out...but hasn't made much difference. No other symptoms, decelerating is fine, doesn't die at idle. On the autoroute I noticed it sort of lacks power when I try to accelerate quickly....
Any suggestions? I don't have any tools, so I will probably have to go back to the dealer anyway...but was curious if you could help me with a diagnosis.
I could try to add a video if that would help.
Many thanks!
