Hey Guzzi Gurus, I have a 2014 V7 Racer that's misfiring badly at low load, light throttle, and low to moderate RPMs. Improves slightly when the bike is warmed up. Improves under high load, heavy throttle. Has a 60 degree F temperature differential between the two cylinders (as measured by a laser thermometer at the valve covers and at each header) after a 20 minute ride. My plan to diagnose is as follows:
1) Check for exhaust leaks at the heads causing a lean condition.
2) Swap fuel injectors left to right and see if the problem follows the injector.
3) Swap O2 sensors left to right and see if the problem follows the O2 sensor.
4) Connect my wideband O2 reader to each O2 sensor and check for differences in AFR.
5) Remove injectors from intake but leave electrical and fuel connected, place injectors in jars, crank engine over for 10 seconds, weigh the fuel dispensed into the two jars and note differences.
Am I missing anything? Any other words of wisdom from folks who have been down this road before? Thanks!
1) Check for exhaust leaks at the heads causing a lean condition.
2) Swap fuel injectors left to right and see if the problem follows the injector.
3) Swap O2 sensors left to right and see if the problem follows the O2 sensor.
4) Connect my wideband O2 reader to each O2 sensor and check for differences in AFR.
5) Remove injectors from intake but leave electrical and fuel connected, place injectors in jars, crank engine over for 10 seconds, weigh the fuel dispensed into the two jars and note differences.
Am I missing anything? Any other words of wisdom from folks who have been down this road before? Thanks!