**update**
Looks like I found the gremlin causing the red service light issue! While riding the bike after checking literally every electrical connection and replacing the sump spacer gasket with no success, I decided to put the bike on the center stand, start it and rev it up to 3500 rpm until the service light came on. This time with me off of the bike, I was able to notice a slight drop in rpm along with some engine popping. It was very subtle at first, but after several attempts the engine popping seemed to get worse almost as if it was running on one cylinder. I popped the plug wire covers and found electrical tape wrapped all around the spark plug boot of the right cylinder. My guess is that when the guys rollerized the bike they damaged the right plug cap. Then, like a cat covering up his s--t, they wrapped a bunch of tape around it and gave the bike back to me. I replaced both plug caps with NGK plug caps and the bike is running fine; however, now I'm getting a code, ECU21, for the oxygen sensor. This sensor is brand new and was installed last March and has less than 1K miles on it. I pulled the sensor and checked the heating element for resistance. According to the service manual, I should be seeing 12-14 ohms. I'm reading 8.5 ohms on my multi-meter. So now I have a question for you all: knowing that the Guzzi service manual has a number of errors, is the 12-14 ohm spec correct? Would the fact that I'm only reading 8.5 ohms be enough to throw the code? I've been through three of these sensors in the last couple of years and this one is only seven months old.
Looks like I found the gremlin causing the red service light issue! While riding the bike after checking literally every electrical connection and replacing the sump spacer gasket with no success, I decided to put the bike on the center stand, start it and rev it up to 3500 rpm until the service light came on. This time with me off of the bike, I was able to notice a slight drop in rpm along with some engine popping. It was very subtle at first, but after several attempts the engine popping seemed to get worse almost as if it was running on one cylinder. I popped the plug wire covers and found electrical tape wrapped all around the spark plug boot of the right cylinder. My guess is that when the guys rollerized the bike they damaged the right plug cap. Then, like a cat covering up his s--t, they wrapped a bunch of tape around it and gave the bike back to me. I replaced both plug caps with NGK plug caps and the bike is running fine; however, now I'm getting a code, ECU21, for the oxygen sensor. This sensor is brand new and was installed last March and has less than 1K miles on it. I pulled the sensor and checked the heating element for resistance. According to the service manual, I should be seeing 12-14 ohms. I'm reading 8.5 ohms on my multi-meter. So now I have a question for you all: knowing that the Guzzi service manual has a number of errors, is the 12-14 ohm spec correct? Would the fact that I'm only reading 8.5 ohms be enough to throw the code? I've been through three of these sensors in the last couple of years and this one is only seven months old.