Magneto Marrelli... When I start it in the morning it fires right up and goes to 1400rpm for 4 seconds, then props to about 850rpm. It struggles to stay running for about 7 seconds then jumps up to 1200rpm and is fine. It goes down as bike warms up. Eventually idleing at 850 as bike is fully warm. It only happens the 1st time u start it then is fine all day. Please help?
SOURCE: Bike running rough 96 Wide Glide
check plugs and wires, also coil my be weak, sometimes a bad ground will cause this also and weak battery. I've had these problems before on my older Harleys that I built
SOURCE: High idle below 72 degress
If this is still a problem. I had a similar issues with my 06 Road King. Mine ran extremly hot and the idle was horrible too. On cold mornings five miles in I had to get off the bike because it felt like I was going to burn up. Two years dealing with Harley dealerships, who were completely worthless, and nothing. I even got to the point I told them to come pick the bike up I was not making anymore payments. Well that did not work.
I called a chopper shop, PeteG's in Longwood FL, told them what was happening. I had the carb drilled out, a new breather put on, and pipes (of course those were what the hell). Anyway, since the work was done, I don't run hot, my idle is normal, and fuel consumption has improved by almost six miles per gal. I just hit 43 mp/g this week. Since the repairs were comlpeted about three weeks ago I've put almost 1500 miles on the bike no problems yet.
One note... Do not deal with Harley if your bike is out of warranty. Ask around and find the names of some independant shops. Ask them. The benefit is they usually will give you a straight answer and two they cost a lot less.
Hope this helps.
SOURCE: 1999 road king wont start
Its your fuel pump if you can't hear it. And its inside your tank. Not a hard fix if you have a book that tells you how to remove it. Alot of procedures to follow to get it right. And yes it does work off a relay.
SOURCE: 1998 roadking fuel injected idles to fast after it
One item you might want to check is for a vacuum leak. All the rubber plugs and stuff on the module sometimes wear and leak. If the change was sudden or recent this might also be the culprit.
The IAC motor is not that difficult or expensive to replace if you feel you need to do that just let us know. Hope this helps,
JP
SOURCE: 2009 Dyna Super Glide Custom starting problems:
Does the start quit turning or does it continue to sound like it's turning? If the starter quits turning, I'd suspect the battery. Take it out and have it tested. Usually no charge for this service at most any auto parts house.
If the starter sounds like it's still turning but the engine isn't, that's an indication that the "starter clutch" is bad inside the starter. This is the "one way bearing" unit that turns the engine to start it but then freewheels when the engine starts. I've seen many of them go bad. If the bike is still under warranty, take it back to the dealer before the warranty runs out. At least have a documented complaint of the problem within the warranty period. That way, if the warranty runs out you may can still get it fixed under the warranty.
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