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F4i fuel issue?

  #1  
Old 07-30-2016, 04:02 PM
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Default F4i fuel issue?

So i have put a ton of work into this bike. It is a 2002 f4i and i have been having issues at low throttle and the bike jerk forward slighty in any gear. Today i went to ride it and anything above 3k rpms the bike jerks violenty and wont go any faster. I had to ride it back home going 10mph. Is something clogged you think?? Im clueless. It revs fine with the clutch in or in nuetral. Just under load is when this happens.
 

Last edited by AWALLE01; 07-30-2016 at 04:35 PM.
  #2  
Old 07-30-2016, 07:39 PM
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check your ignition system, coils pushed in all the way and connected properly?

is the FI light on? are the TPS and MAP sensors plugged in?

other than that stuff it definitely could be a dying fuel pump or fuel pressure regulator...

So i have put a ton of work into this bike.
details?
 
  #3  
Old 07-30-2016, 08:11 PM
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I painted the fairings, new clutch and fixed some wiring issues. Fuel pump ground wire was shot, fixed that and grounded it to the frame, ran fine for a few weeks. Now this just randomly happens. The kickstand sensor has been disconnected since it doesnt work anymore due to the fuel pump being grounded on the frame (not sure how that works but its all connected). I added fuel injector cleaner the other day to try and clean them up some. Idk if that has anything to do with it, maybe i put too much but nothing online points me in that direction.

QUOTE=rfesu;1297327]check your ignition system, coils pushed in all the way and connected properly?

is the FI light on? are the TPS and MAP sensors plugged in?

other than that stuff it definitely could be a dying fuel pump or fuel pressure regulator...



details?[/QUOTE]
 
  #4  
Old 07-30-2016, 11:43 PM
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Join Date: May 2015
Posts: 105
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The kickstand sensor has been disconnected since it doesnt work anymore due to the fuel pump being grounded on the frame (not sure how that works but its all connected
that doesn't make much sense, sounds like you have some wiring gremlins to sort out that may or may not be the cause of this problem.

if your fuel pump ground wire has been messed up for a while, it might have taken the pump with it
 
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