Can't tell what is causing the bike to run on one cylinder, spark plugs are brand new. Could it be a carburation problem, weak coil, or something electrical? I just cleaned out my jets and everything because of a gas leak problem I had but that was from (what im guessing) was a vacuum line hose that the clamp broke off from. replaced that and no leaking but now the problem of the cylinder.
07 Spirit 1100 only firing on one cylinder
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^^^That. The first thing you need to do is figure out why the one cylinder is not firing. Is it spark or fuel? Did this start after you changed the plugs or after you cleaned the jets, or did you do both at the same time.
First check to see if you have spark to that cylinder. If not. Proceed to electrical troubleshooting. If there is spark, check to see if the plugs are wet in the bad cylinder. Then check the air intake to see f you have a leak or something not connected
plugs were changed not to long ago and are getting spark and aren't wet. I just cleaned the jets (yesterday) but I dont know what it could be. judging from the heat from the tailpipe, the rear cylinder is firing and doing fine the front is heating up but not nearly as fast as high of a heat. I have a feeling it may be a fuel problem but I'm not entirely sure.
As for when it started, I have no clue. My buddy is the one looking at the bike and he noticed as soon as I pulled into the driveway of his shop. I thought something was iffy but another friend of mine, who owns a shop and I took it to for a tune up recently, said that the bike was fine. I guess I learned my lesson on that one.
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Check your primary coil wire blade connections. Unless they're fully seated they will make intermittent contact or none at all if the blade connection of the coil is jammed between the boot and female connector. That connection should be rock solid without any flex at the coil connection. I had the same problem with my Shadow.
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