Same problem with my 01 Ultra. Changed throttlebody and ecm, ran good. Had injector go bad, pulled tank and replaced both, rode it home. After sitting 2 days, went to start and just cranks. Pulled plugs, checked spark and it's good, but plugs are bone dry. I've pulled the pump out and held it in the gas in the tank, pump spools up and shuts off, no leaking line, but no fuel to injectors. Wondering if filter is plugged or maybe the pressure line quick connect has gone bad.
If your problem is the ECM, dig around here on the forum or EBay and find a used one, should be able to find one for about $100. I replaced mine several years ago because the original had taken on water and shorted out my tuner. The ECM actually worked fine once dried out, I replaced it to be safe and to have the original as a spare.
I'll add to that; Did a brutal rain ride years ago on a MM Road King. Got home fine but next day she wouldn't start. On mine, it didn't throw any codes but had no spark at all. Tuff one to sort out. Ended up buying a used ECM & she fired right up.The old one sat in a warm dry area for a good week before I decided to try it again & it fired right up. My conclusion was those big boxes can take on moisture. Not saying this is your problem, but just saying.
On a side note I had a delphi ECM go bad with a V&H piggy back tuner. It through all kinds of codes but none on itself. It's like they have ego's (LOL).
Haven't used piggy back tuners since. Our ECM's make so many decisions in split milliseconds I cant see using another box to manipulate it in those time frames IMO.
If you have spark then it isn't the crank or cam sensors or ECM or tuner or any other electrical problem, its fuel.
Since you confirmed you are hearing the pump cycle when the switch is on, then it most likely has to between the pump and throttle body. Most likely it's the quick disconnect fitting at the tank. These do go bad and a symptom is the engine just shuts off. I had it happen to me last summer. Disconnect the line at the tank then look at the groove that goes around the black fitting. If there are several dimples above the groove, then the fitting has moved down enough, because of the dimples, and is closing off the one way check valve in the quick disconnect fitting. The dimples come from the 3 small *****, used to hold into the groove to hold the line in the fitting, wearing into the fitting from vibration. Try reconnecting the line and moving it around and see if it starts. If it does, then you at least need the line from the tank to the throttle body, but probably will need the in tank fitting also as the o-rings inside it will tear up and could jam things up in there, causing leaks or no fuel flow.
Here is a photo of the fuel line fitting and the dimples worn into the fitting which caused my bike to shut off while accelerating down the road, then not restart.
I'm pretty sure the bike has similar quick disconnects on the fuel line. And the bike has over 50,000 miles on it, so definitely could be some wear on the that fitting. I'll take the disconnect out and give it a good look.
I have an 01 that died while riding. I found that if I disconnected the fuel line from the tank and hooked it back up, it would start and die. It turned out to be a bad o-ring in the fuel line fitting. If you're not getting fuel, you might replace that o-ring.
The 99 MM does not have a quick disconnect. It screws in, if you pull it be careful when reinstalling it it is easy to cross thread cause it does not go in straight like you would think. Have you tried starting it by adding a fuel (flammable brake clean is what I have used before)?
01-09-2015 | 12:15 PM
