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john24ssj |
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john24ssj Trackday Trickster
Joined: 08 Aug 2014 Karma :
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Posted: 13:20 - 19 Mar 2017 Post subject: CBR600f uneven jumpy/idle |
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Hello everyone,
I just bought CBR600f 2001 and it's lovely only has 10000 on the clock. The owner did not ride it much over past 5 years he only did 900 miles and it's been sitting in a garage for the last 10 months before I bought it.
Now there is a small issue with engine not running evenly, at higher speeds it's hard to tell but at lower ones and idle you can feel it. I've got a video of the idle and you can see the bike idles at 1000rpm but keeps jumping to 1100rpm which when riding at lower speed is very annoying.
This is my first fuel injected bike but it does not seem right. Any ideas what could be the possible issue?
Thank you ____________________ Bikes: Honda CBR600Fi, Kawasaki ER5 |
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jaffa90 |
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jaffa90 World Chat Champion
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john24ssj |
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john24ssj Trackday Trickster
Joined: 08 Aug 2014 Karma :
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Posted: 14:03 - 19 Mar 2017 Post subject: |
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So far I have not seen it blinking but I will pay attention to it. Going through the users manual it seems that at 1000rpm it's idling too low. The manual says the bike should be at 1300rpm +/-100.
Could idle set too low cause this issue? ____________________ Bikes: Honda CBR600Fi, Kawasaki ER5 |
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jaffa90 |
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jaffa90 World Chat Champion
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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Matt B |
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Matt B World Chat Champion
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jaffa90 |
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jaffa90 World Chat Champion
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Matt B |
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Matt B World Chat Champion
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john24ssj |
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john24ssj Trackday Trickster
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john24ssj |
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john24ssj Trackday Trickster
Joined: 08 Aug 2014 Karma :
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Posted: 09:38 - 23 Mar 2017 Post subject: |
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I feel quite disheartened, I rode my new bike in to work this morning and I did not enjoy it at all It was an awful experience.
Anything below 3500rmp the bike is jumpy/lumpy and juddery, it tries to lurch forward and then stops. It made for a very unpleasant ride.
4000rmp and up it was beautiful, tons of power and all was smooth. I think it might a vacuum leak or something, it feels like the engine is trying to adjust/compensate for something. ____________________ Bikes: Honda CBR600Fi, Kawasaki ER5 |
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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john24ssj |
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john24ssj Trackday Trickster
Joined: 08 Aug 2014 Karma :
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Posted: 20:52 - 23 Mar 2017 Post subject: |
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Took the bike home but this time I went on a dual carriage way then motorway and it was absolutely lovely. Did 80mph even 90mph and no hesitation or anything at all from the bike and everything was super smooth.
But the moment you go down to lower speed and below 4000rpm the bike was jumpy
Not sure if to just take it to Honda garage or try to check it myself. ____________________ Bikes: Honda CBR600Fi, Kawasaki ER5 |
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john24ssj |
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john24ssj Trackday Trickster
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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fatjames |
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fatjames World Chat Champion
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fatjames |
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fatjames World Chat Champion
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john24ssj |
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john24ssj Trackday Trickster
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chris-red |
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chris-red Have you considered a TDM?
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Hong Kong Phooey |
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Paulf |
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Paulf Nova Slayer
Joined: 24 Jan 2017 Karma :
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Posted: 20:53 - 24 Mar 2017 Post subject: |
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Hi low speed or idle problems can be many things, I note you say it Fi honda motorcycle. Common fault with honda FI bike is IAC valve (Idle Air Control) valve, a reset is recommended according to honda workshop for small bikes I.e. 125 fes, sh, pcx, etc could apply to big bike. But also valve timing, spark plug, ignition timing ie pulse generator, induction pipe leak, ecm, faulty ignition coil are possible causes. IAC reset is easy though but worth systematically working through the other possible causes first. I can tell you the process for the smaller bikes as I have said do not know if it translates up to larger bikes. But successfully performed on my 125 fes 2006 vintage and your bike is younger. |
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john24ssj |
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john24ssj Trackday Trickster
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Posted: 22:13 - 24 Mar 2017 Post subject: |
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Paulf wrote: | Hi low speed or idle problems can be many things, I note you say it Fi honda motorcycle. Common fault with honda FI bike is IAC valve (Idle Air Control) valve, a reset is recommended according to honda workshop for small bikes I.e. 125 fes, sh, pcx, etc could apply to big bike. But also valve timing, spark plug, ignition timing ie pulse generator, induction pipe leak, ecm, faulty ignition coil are possible causes. IAC reset is easy though but worth systematically working through the other possible causes first. I can tell you the process for the smaller bikes as I have said do not know if it translates up to larger bikes. But successfully performed on my 125 fes 2006 vintage and your bike is younger. |
Thanks for the reply. When you say reset do you mean the main computer reset? ____________________ Bikes: Honda CBR600Fi, Kawasaki ER5 |
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Paulf |
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Paulf Nova Slayer
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john24ssj |
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john24ssj Trackday Trickster
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john24ssj |
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john24ssj Trackday Trickster
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Posted: 16:03 - 25 Mar 2017 Post subject: |
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I checked the stored fault codes on the computer and got this. I don't know how to read it.
https://youtu.be/u6X9csSM3sU
It seems to be 2 codes 1 blink (0.5seconds) and then 9 blinks(0.5 seconds) ____________________ Bikes: Honda CBR600Fi, Kawasaki ER5 |
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
Joined: 30 Apr 2016 Karma :
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Posted: 16:31 - 25 Mar 2017 Post subject: |
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Faulty IAT sensor or wiring, try cleaning the electrical contacts before just replacing. Just check the procedure because I thought the engine should be running under 5krevs on the sidestand.
Not at home so can't confirm from the manual, but these are the codes.
https://stuntride.com/vbstunt/showthread.php/36775-F4i-FI-light-codes ____________________
'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8 |
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Old Thread Alert!
The last post was made 7 years, 32 days ago. Instead of replying here, would creating a new thread be more useful? |
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