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Fuel pump not priming

  #1  
Old 09-15-2018, 03:16 PM
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Default Fuel pump not priming

I plan to bypass all the other sensors like kickstand and bank angle sensors, but first i need help with jumping the fuel pump. I tried jumping it with a wire with the bike on and kill switch but did not work. Just wanted to know what that means exactly..is the whole fuel pump bad? I even swapped both relays but i doubt both went bad.
 
  #2  
Old 09-17-2018, 05:39 PM
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If you're bypassing the BAS, make sure you do it right. It could be the reason its not priming, or starting at all. It will turn over but will never fire. The kickstand switch only applies when the bike is in gear, so it wont stop the bike from starting or running in neutral with it down. And i do believe there are only 2 relays that would not let the pump prime if they were bad, the two towards the rear of the bike. Its possible the wiring to the pump is flipped, or some other electrical problem harness related. Also make sure the kill switch is in the run position. But, worst case scenario, you might have a bad pump
 
  #3  
Old 09-23-2018, 01:31 AM
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Replaced my fuel pump and bike started right up. Primed and everything. Let it run for 5min turned it off. Hooked up some fairings. Tried to start it, Pump no longer primes again. Wtfff
 
  #4  
Old 09-23-2018, 06:50 AM
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Originally Posted by omg209 View Post
Replaced my fuel pump and bike started right up. Primed and everything. Let it run for 5min turned it off. Hooked up some fairings. Tried to start it, Pump no longer primes again. Wtfff
Hate it when that type of stuff happens! Makes me feel like taking a sledge hammer to something! I have no other input but hope you get it sorted out and am interested to know what the problem is...
 
  #5  
Old 09-23-2018, 02:31 PM
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I jumped my fuel relay but no fuel pump prime. However when I connect the fuel pump directly to the battery it does spin. So not sure if fuel pump is bad or not. As for the ignition diodes I'm getting 8v instead of the 9. Battery is well maintained with battery tender overnight. Not sure how to get that pink wire voltage any higher, a zener diode would make the problem worse for me. Any input is appreciated.
 
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