- Joined
- Mar 11, 2019
- Messages
- 55
- Reaction score
- 5
- Location
- Hitchcock, TX
- First Name
- Charles
- Last Name
- Irons
Need help with diagnosing a misfire on my BMW. Started a few weeks back. Will only miss up to 4000 RPM, which for this bike, is barely clutch engaging speed lol. Sounds horrendous, like I'm missing a whole cylinder. Above 4000, pulls as hard as always. I rode an hour away to Team Mancuso Powersports Southwest to have them look at it, issue cleared up by the time I got there. No CEL on the dash. I chocked it up to water in the gas, headed home, refilled tank, added more ethanol treatment, just in case. Sat a couple of weeks, now doing it again. Unplugged my O2 sensors, bike now only sputters under 3000, and even then, is not consistent, but it did not eliminate the problem completely, seems to idle smoother though. Bike is a 2016 with only 8700 miles on it. Full Akropovic exhaust and the ECU was flashed by the dealer before I bought it. O2 sensors for the bike are very expensive, I don't just want to throw money at it. Plan on taking it back to Mancuso, but I didn't know if anyone had thoughts on the matter before I do that. I bought an extended warranty with them. Thanks.