Front cylinder not firing

[Dellinger]

What year is your bike? Is the front injector not working properly? May be dumping fuel. All the computer tweaking in the world won't fix a bad or malfunctioning injector.

[BUELLner]

'09 XB12Ss with 4k miles. Seems to start up without the issue when temps are above 45degrees (few turns over today, but did not stall after first start-up and ran both cylinders fine). Pops a bit on deceleration too... seems like it could be dumping fuel. How is the best way to access and check the injector?

[user_deleted]

'09 XB12Ss with 4k miles. Seems to start up without the issue when temps are above 45degrees (few turns over today, but did not stall after first start-up and ran both cylinders fine). Pops a bit on deceleration too... seems like it could be dumping fuel. How is the best way to access and check the injector?

do the simple and obvious things first which involve removing airbox cover, airbox inner lid, filter, airbox base, disconnect IAT switch....set all aside then:
1-if not done before replace plugs with NGK DCPR9EIX. rideability and cold start noticeably improved and virtually "foul-proof". factory gap is .040 but be DAMN CAREFUL if adjusting same. the center electrode is extremely fragile as is the ground electrode inner surface.
2-check your IAC (idle air controller) assembly for tightness and that the factory plug is installed tightly.
3-carefully check your plug wires. your bike is 7 years old and though low mileage i've seen these 2 wires act up after just a few years.
report back

[jbern58]

Not trying to be a smartass but, I don't get why so many folks let their rigs sit for months at a time and don't bother going out once a week and crank em up and/or have a trickle charger on em.

I lived in a locale where I got upwards of 5-7 feet (not inches) of snow accumulation with temps below zero regularly over the winter, and I still made a point to start all my rigs once or even twice a week and had a trickle charge on em.

For what it is worth, cold dry temps play havoc on the fuel, oil, batteries, hoses, electric wires and contacts. Variable temps create condensation in the tranny, main oil res and the fuel tank. Wise to ensure fuel and oil stabilizers are at least added to them if one does not intend on starting their rigs over the long winter months as well as ensuring all electrical contacts are cleaned and coated as well as disconnecting the battery, all prior to putting it away for long periods.

I say charge up the battery, do a complete deep clean of all electrical connections and fuel lines, replace the plugs, drain the oil and fuel and start from fresh. Bet ya all works just fine after doing so.

Good luck.

Not advisable to be cranking up an engine with 20W50 weight engine oil in anything less than 45 degree Fahrenheit temps, let alone sub zero temps! Good way to destroy your motor. YouTube 20W50 weight oil in winter. It pours like cured cement.