kjouk
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| posted on 24/2/08 at 09:21 AM |
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07 R1 Running Rich
Hi,
Could do with a hand on a 07 R1. This is a new install that appears to be running rich (about 0.8 AFR) right through the rpm range as logged by an
LM-1. We have taken the AIS off and checked all the major sensors are working. The bike lambda sensor appears to be having no effect on this so I am
guess we are running off a default map rather than closed loop.
No indication on any of the plugs that it's just one cylinder that is at fault. Engine runs nicely enough on the road but idle is unstable after
its warmed up for a couple of minutes and its using a lot of juice.
Don't have the clocks on so I can't be sure we don't have a fault somewhere. I can get it back to a more normal AFR by replacing
the air temp sender with a resistor to fool it into thinking air is warmer than it is but obviously I would rather find the cause.
Anyone have any pointers on what to check next, running out of ideas really.
Thanks.
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kjouk
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| posted on 24/2/08 at 09:23 AM |
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Should also have said its running stock airbox with an older R1 can on a custom manifold.
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Coose
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| posted on 25/2/08 at 03:42 PM |
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You've pretty-much answered your own question - check the temperature sender resistance throughout its range....
Spin 'er off Well...
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kjouk
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| posted on 25/2/08 at 08:25 PM |
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Thanks, Coose, will check again but it's brand new (just got it from yamaha) and in spec @ 20C.
Did get a bit more info by getting the clocks on. Had a fault 60 on but traced this to damage caused by a PC tap into throttle wire at ECU. Other than
that just EXUP complaints.
This didn't fix it so checked the CO settings in ECU and looks like they have been reset to 0 by previous owner but backing these off to a level
that gives a normal-ish AFR requires a big change (about -40). Can't believe this is how it left the factory so guessing something else has been
played with or I have messed up but no idea on what.
Hopefully going to try a different ECU on it in a few days but until then any suggestions greatly received.
Thanks.
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tks
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| posted on 25/2/08 at 08:56 PM |
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you should get rid of the exup error...
maybe it makes the difference...
also i would take off your labda sensor because you are running the risk that you brake it (they don't like running rich)..
(offcourse if its to much)...
Tks
The above comments are always meant to be from the above persons perspective.
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