I recently bought an 08 fatboy and haven't had a chance to ride it much. It sounds like it is running on one cylinder and the check engine light will come on. The ethanol gas has been in the tank for awhile, about 1 gal. I put some seafoam gas treatment in the tank, fresh gas, and changed the plugs but the problem is still there. Any suggestions? I am new to this forum so I apologize for asking this question twice.

 

Not what you want to hear but that can turn into a long thread, quite a few things be the prob. I suggest that you drop it off at the local shop only because you arent familar with it.

 

do yourself a favor and post a new thread about asking for a good indy shop around your area

 

Did you buy it from a dealer? There might be some warentee things they can do or at least inspect it. If not you could always go to the person you bought it from but that usually never works. There are many many things that could be going on and without specifics on whats going on or what mods have been done to the bike we arnt gonna be of much help

 

When you post a question like this it invites a year long thread while the rest of the forum makes educated suggestions. If you're going to work on this yourself, get a service manual. Before you jump on the forum, check the easy stuff first. Are you getting spark? what does the plug look like, etc...That way we won't be wasting time starting at the most basic level and you'll get a little more cooperation from the good people here.

 

Thanks to all. I have retrieved the codes and called them into the dealer. I live a ways away from a dealer but he said he would call me back. I'm sure I'm going to have to take it to them anyway but thanks for your replies.

 

Do some homework and check for the simple things before you take it in. It might turn out to be something very simple, but if it's over your head, take it to a good indy.

 

a dead cylinder can be so many things yet just a few basic checks can get it checked for the right direction to go.. ck for fire at each plug wire.. loosen them before you start the bike, then slowly pull the wire off the plug and see if hear a snapping sound on both wires and what cyl makes the least difference with the wire pulled off. if thats good then you have fire. note what cylinder didin't change when you pulled the wire off. now swap plugs and see if the miss moves to the other cyl. if it does, then you know that plug is bad. if that doesn't change, ck the injectors and make sure they are connected all the way. since it is the easiest, you may want to look in and check before you do the plug wire deal. listen for a hissing noise while its running like a vac leak. that info should get ya somewhere if it is actually missing.