Is my lambda sensor kaputt?
I have a rebuilt '97 K1200rs. All seems fine now after I changed the plugs and fixed the ignition timing. However, under constant throttle, I still feel a rocking motion as if the gas input is fluctuating. Have read a few posts on the bucking bronco syndrome but am not convinced my bike is acting like that. At the same time my fuel consumption is way too high. 83 miles on a full tank and the needle is below the 1/4.
When accelerating, there is a lag in the first two gears that I have associated with being too low in the rev range. (Could be wrong here though as I am coming from a single cylinder bike)
Have had people drive behind me to tell me if the bike is smoking on the motorway but it isn't.
When I let the engine idle, I can see the needle go up and down about 100-150rpm and can also hear the difference.
My gut tells me it is the lambda sensor. Is there a way to test the lambda sensor? I have let it idle with the sensor disconnected and then connected and no change. Read the Clymer and BMW manuals and not been any wiser. Short of going to the dealer for a Moditec run which will have be in 2 weeks time, is there any other thing I can do?
Tempted to just do a full run with the lambda sensor out to see if things are different. Would that cause any damage?
Battery is brand new and terminals are tight.