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F4i sputtered then died

  #1  
Old 05-02-2014, 10:42 PM
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Default F4i sputtered then died

She's been running just fine, has less than 8000 miles on her. On the way home tonight, she started sputtering a couple blocks from home. A few seconds later the engine stopped running. The electrical stayed on, I coasted for a block then ran out of momentum coming up the hill to my home. After I came to a stop, I turned off the ignition, turned it back on then she started right up. I rode her the rest of the way home and shut her off once in my garage.

I'm guessing the issue is fuel related since I had enough juice to restart the bike. She only has less than 8k miles so I didn't think I needed to change the fuel filter or plugs yet.

I can't say for sure but I could swear I've noticed some yellow blinking coming from the FI light while riding now and then but by the time I look back down, everything is good; no FI light on. Perhaps it's the Erion mapping? I've been holding off on a custom map.

History:
-Power Commander 1000 miles ago but changed to Erion mapping 100 miles ago
-Removed O2 sensor, used resistor trick to fool FI sensor 1000 miles ago
-Delkevic Slip-on exhaust 1000 miles ago
-Changed CCTL around 2000 miles ago
 

Last edited by Congee; 05-03-2014 at 03:31 PM.
  #2  
Old 05-02-2014, 11:30 PM
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After searching some more, seems like the issue may be caused by a bad Fuel Pressure Regulator?
 
  #3  
Old 05-03-2014, 01:05 PM
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with so few many miles it would be hard to determine the cause, could be multiple things.. the map, fpr, voltage regulator... i would start with checking the regulator as mine did the same thing when the regulator went out on me. check the voltage at 5k rpm and then go from there..
 
  #4  
Old 05-04-2014, 12:38 PM
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You sure you're not just out of gas? My reserve fuel indicator doesn't read very accurately so this happened to me one time. had 3/4 bars left and it started sputtering so I had to push it into a Taco Bell parking lot. But if you went very far at all after it shut down this probably isn't the case.
 

Last edited by theadamie; 05-04-2014 at 12:40 PM.
  #5  
Old 05-04-2014, 02:18 PM
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Originally Posted by Congee View Post
After searching some more, seems like the issue may be caused by a bad Fuel Pressure Regulator?
In my experience with FPR, I was still able to ride it but it feels like it was on 2 cylinder and have rich symptoms. Do the FPR check and see if its the problem.
Fi light should be red?
 
  #6  
Old 05-04-2014, 04:29 PM
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Thanks for the suggestions folks. Definitely has fuel, I fill up at home with gas cans, I think the gas is OK as I've already run 5 gallons of the stuff. Although the symptoms were as if I had run out of fuel (ie. everything is running just fine then it felt like she was starving for fuel, a slight bog then dead.).

No FI light is on whatsoever after the she's started up.

I just finished checking the FPR and there's no fuel coming out of the vacuum side of the FPR so now it doesn't seem like that's the problem either. I also took a sniff around my motor oil cap and it didn't smell like gas either.

Perhaps it's the PC map?
I'm about to check electrical charging system with my multi-meter...
 

Last edited by Congee; 05-04-2014 at 04:51 PM.
  #7  
Old 05-04-2014, 07:13 PM
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check map and also check voltage from regulator and possibly stator
 
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