Need some help
Thread Starter
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Stellar HDF Member
Joined: Feb 2007
Posts: 2,136
Likes: 20
From: Trophy Club, TX
Need some help
Posted this with the Dyna folks, but I thought that it would be a better idea to get everyone's thoughts and advice on a problem I had today with my '08 FXDC. I was out for a ride with some friends when the bike started to run a little rough and the throttle response was sluggish. I thought that I might be low on gas at first, but that wasn't the problem. Here are some more of the symptoms:
- smell of gas
- excessive fuel usage, I used nearly half a tank covering 30 - 40 miles
- pipe from front cylinder looks wet (see pic)
- pipe from rear cylinder looks dry (see pic)
- running with the throttle nearly fully open in 5th gear, but barely able to maintain 65 mph
- bike surged a couple of times, acting like it normally would at full throttle in 5th
I'm thinking possibly a bad/stuck/clogged fuel injector at the front cylinder. If it was a clogged/bad fuel filter, I don't think that the pipe would be wet.
Any ideas what the problem might be?
Thanks in advance for the help.
- smell of gas
- excessive fuel usage, I used nearly half a tank covering 30 - 40 miles
- pipe from front cylinder looks wet (see pic)
- pipe from rear cylinder looks dry (see pic)
- running with the throttle nearly fully open in 5th gear, but barely able to maintain 65 mph
- bike surged a couple of times, acting like it normally would at full throttle in 5th
I'm thinking possibly a bad/stuck/clogged fuel injector at the front cylinder. If it was a clogged/bad fuel filter, I don't think that the pipe would be wet.
Any ideas what the problem might be?
Thanks in advance for the help.
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
first confirm you are getting spark from both wires. Make sure the wires to your coil are pluged in all the way too.
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Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Could it be in limp mode? A bad head temp sensor? Only one cyl firing?
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Thread Starter
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Stellar HDF Member
Joined: Feb 2007
Posts: 2,136
Likes: 20
From: Trophy Club, TX
Checked the plugs, they're all snug. I think that you might be right that the sensor might be bad. It seems that it may either be the sensor or a fouled injector that's stuck open and is shooting so much fuel into the cylinder that it can't fire. I might try some injector cleaner to see if that makes any difference.
'preciate the help.
'preciate the help.
