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Re: 2000 Fat boy starts sputtering and lights flash on...
Well it's not points (there are none ) so now we have to figure out if it's elec. or fuel ? so after the motor has warmed up and idling spray soapy water onto or at the intake seals from the left side of bike if idle changes your intake seals are leaking, as far as the regulater goes there is no way to test (says harley ) other than a voltage output test, the primary coil grounds thru the ecm
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If it is backfiring and dying I would be willing to bet you have a crank angle sensor going out when it get warmed up. Also check to see if your fuel pump is running by listening in the gas door with the cap off. I have had them do this when the fuel pump gets hot it quits pumping fuel.
Hi Anonymous, take a ride or trailer your bike over to your local dealers service/parts department, I'm sure they will be happy to take your Harley Davidson for a test ride if necessary/possible and offer professional advice and assistance concerning your issue. Good luck have a nice day.
The problem is either withe the coils or with the ignitors,the ignitors don't usually cause the problems that you're discribing but the coils can come and go as the temperature changes so i would start there.
May be the fuel pump, experienced similar problems in 1995 Intrepid. When the pump warmed up, it would start to loose pressure and car would sputter and die, but would start back up. If it started it would usually begin sputtering again and eventually die.
Could be a fuel line restriction, bad petcock, problem with the vacuum line to the petcock if this is a carburated engine. Could be something as simple as a bad gas cap. Try loosening the gas cap just a bit and ride to see if does it then. Loosen the right side tank cap.
If it's fuel infected, I'm sorry but I can't help you.
The sputtering was a bit of water in the bad gas you got and the smoke was probably from a bit of diesel fuel that was put into a gasoline storage tank in error. The temp guage going bad is just one of those things that happen from time to time, probably just a bad sensor. The idle speed change is a bit quirky but easy to adjust. Stick a fresh set of plugs in the bike and the starting problem should clear up.
I don't think there's anything wrong with your bike. I'm assuming that all the required services have been done and you have a good battery. The **9 bikes absolutely require a good strong battery. If you don't already have one get and use a battery tender. It will save you a lot of headaches with a weak battery. As for the starter speed, the 749 turns over S-L-O-W-L-Y. It's normal, if you're use to other makes it sounds like it won't start but it will. The Fast Idle lever, not a choke, once you start the bike, let it idle about 2000 RPM or so until the coolant temp gage stops flashing, then you can slowly back the lever to minimum, if you if you just push the lever back fast it drops the idle too fast and it will die. When it's not fully warm and you have a stock injection map it runs a little lean and will be cold blooded until fully warm. The occasional stall on a cold morning is not unusual even on a properly set up bike. I normally on cool mornings keep my fast Idle lever up until I'm either on a highway/freeway or a five or so miles in town before I turn it full off. She can be a real bitch to start if she's only a little warm, not cold/not hot, I really don't know why but mine does the same thing. I give it a minute and try again and she'll fire. All this goes away once she's fully warmed up. Once you get the knack of it you'll be fine, I don't even really have to think about it anymore.