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TOPIC: The great fuel injected Roadie Forum Tools Post New Topic Show latest posts Rules

#675977 blue_star (User) Platinum Boarder Posts: 6570 Re:The great fuel injected Roadie 4 Years, 6 Months ago   Just because the exhaust manifold bolts are tight doesn't mean you can't have an exhaust leak. Been there, done that. Since it runs good for a short while after cleaning the plugs and O2 sensor, I would try switching the O2 sensors. If your problem changes to the front cylinder then the sensor is bad. You could also have a bad injector on the rear cylinder. If it's leaking fuel, that would definitely cause the rich condition.   Logged       The administrator has disabled public write access. #675983 texasscott1 (User) Two of a kind Platinum Boarder Posts: 4486 Re:The great fuel injected Roadie 4 Years, 6 Months ago   +1 on swapping the sensors. About the only way to clean the carbon off an O2 sensor is with a propane torch. You have to remember, these things operate in temperatures exceeding 1,000 degrees. They are also very sensitive to contaminants in the exhaust, antifreeze, trans fluid, engine oil, engine cleaners, etc. All you're cleaning is the metal cover that protects the actual sensor. As far as an error, it may be that the sensor is operating okay but just returning lower voltages than normal. The computer has no way of telling if that's the case. Kind of like a temperature sensor, the computer will believe a return of 100 degrees when it's actually only 40. Make sense?   Logged     Last Edit: 2013/08/21 12:09 By texasscott1.   My 99 Standard Test Mule Scott B.   The administrator has disabled public write access. #676069 Gadgetman728 (User) I've live in pursuit of the next adventure Gold Boarder Posts: 852 Re:The great fuel injected Roadie 4 Years, 6 Months ago   Well... I swapped out O2 sensors, easy to do. I went 30 miles, no problems ... yet. When everything is clean, it runs great. I have to go move a rototiller I sold for a guy, then I'll go on another ride. I' post results later - That is all!!   Logged       The administrator has disabled public write access. #676565 Gadgetman728 (User) I've live in pursuit of the next adventure Gold Boarder Posts: 852 Re:The great fuel injected Roadie 4 Years, 6 Months ago   We wnt 110 miles total yesterday and last night. Everything is still running fine since swapping O2 sensors. After the swap out, the whole bike seemed to run smoother while accelerating, although it's still unable to cruise evenly (still jerky) at any slower speeds. I ordered a new O2 Sensor from Bike Bandit - $134. My Napa friend doesn't like the universal O2 sensors, and convinced me that the extra price was worth it. I'll take another ride tonight and see if she doesn't foul.   Logged       The administrator has disabled public write access. #676620 texasscott1 (User) Two of a kind Platinum Boarder Posts: 4486 Re:The great fuel injected Roadie 4 Years, 6 Months ago   If after swapping the sensors the front cylinder didn't start fouling and the rear is still fouling then the problem isn't with the sensor. Finding out for sure what the problem is might save some money in the long run. Those so called "universal" sensors are probably made by Bosch and are every bit as good as the factory sensor as long as the threads are the same. The O2 sensors aren't used for fuel control during acceleration, just during a steady cruise.   Logged     My 99 Standard Test Mule Scott B.   The administrator has disabled public write access. #676673 Gadgetman728 (User) I've live in pursuit of the next adventure Gold Boarder Posts: 852 Re:The great fuel injected Roadie 4 Years, 6 Months ago   Texasscott1 - You are so right, the Universal O2 sensor is made by bosch. The OEM already has the plug installed, so I don't have to mess with that. This bike has over 40,000 miles on it, There are only 2 injectors and 2 O2 sensors. I don't want parts that I don't need, but I'd like to git er done right the first time and not chase the same problem. I'll replace all 4 parts, just for peace of mind if need be. I'm going to run another tank through her tonight and see how she acts. If she fouls the back again, I'll probably just order an injector and change it out. My new O2 sensor should be here in a week or so.   Logged     Last Edit: 2013/08/22 15:35 By Gadgetman728.     The administrator has disabled public write access. #677297 Gadgetman728 (User) I've live in pursuit of the next adventure Gold Boarder Posts: 852 Re:The great fuel injected Roadie 4 Years, 6 Months ago   Well, I rode off almost a whole tank last night, then I ran another one through her today. After 377 miles, it's still running like it's supposed to. I was getting a little irritated at having to change plugs every ride. Around 325 miles she kinda hesitated @ 60 MPh, I smiled and thought, "there goes the front plugs", but I accelerated just a little bit, and she staightened up. My bike is truly running much better than when I bought it. It would never hold a steady RPM in 2nd or 3rd in town, it was jerky, or you had to rap the gear higher than you wanted to. Now it's "in town" drivable, although she's always ready for 70+ MPH hiways. I am truly mystified. All I did was swap O2 sensors and install fresh plugs. Any thoughts from the peanut gallery?   Logged     Last Edit: 2013/08/23 21:30 By Gadgetman728.     The administrator has disabled public write access. #677338 River (User) Platinum Boarder Posts: 2847 Re:The great fuel injected Roadie 4 Years, 6 Months ago   Yeah, change the rear o2, and switch them back.   Logged       The administrator has disabled public write access. #677347 blue_star (User) Platinum Boarder Posts: 6570 Re:The great fuel injected Roadie 4 Years, 6 Months ago   I say if it's running good now, leave everything alone and enjoy the ride. The only thing I can figure is that the O2 sensor connector on the rear cylinder wasn't quite right for some reason but by switching them, you have everything working correctly.   Logged       The administrator has disabled public write access. #677349 texasscott1 (User) Two of a kind Platinum Boarder Posts: 4486 Re:The great fuel injected Roadie 4 Years, 6 Months ago   During acceleration and, according to the FI manual, over about 15% throttle the O2 sensors are ignored. It could be that there was a bad connection but time will tell. Try a lot of steady cruise and see if it holds up.   Logged     My 99 Standard Test Mule Scott B.   The administrator has disabled public write access.

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