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March 23rd, 2021, 12:14 AM   #1
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Bike wonít start

Hey folks- I could use some help. My FE 570 was behaving oddly during last few rides: stalling out while under throttle, most of the time a quick press on the start button got it running again, sometime I had to wait awhile. Then it stalled out completely during my last ride; bike would not start hot or cold- tried bump starting too. No go.

After reading up on fuel pump issues, I pulled and tested the pump with hot water and it pumped fine. I replaced it anyway with a CA Cycleworks pump and a new in tank filter. Bike still wouldn’t start. Ohm tested the spark plug which was a little low, and replaced, no luck. Checked for spark and it’s there. I pulled the fuel injector and cleaned it and tested for proper spray. That all checked out. Still won’t start and not sure what else to check. I poured some fuel down the throttle body and it did start after all the other tests.
I’ve also checked all the fuses.

Thoughts?

Thanks!

Last edited by Stad79; March 23rd, 2021 at 12:24 AM. Reason: Adding details
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March 23rd, 2021, 05:40 AM   #2
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Check your fuel pressure should about 45 to 50 psi (just a guess) if so replace fuel pressure regulator
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November 16th, 2021, 11:05 AM   #3
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Originally Posted by Stad79 View Post
Hey folks- I could use some help. My FE 570 was behaving oddly during last few rides: stalling out while under throttle, most of the time a quick press on the start button got it running again, sometime I had to wait awhile. Then it stalled out completely during my last ride; bike would not start hot or cold- tried bump starting too. No go.

After reading up on fuel pump issues, I pulled and tested the pump with hot water and it pumped fine. I replaced it anyway with a CA Cycleworks pump and a new in tank filter. Bike still wouldnít start. Ohm tested the spark plug which was a little low, and replaced, no luck. Checked for spark and itís there. I pulled the fuel injector and cleaned it and tested for proper spray. That all checked out. Still wonít start and not sure what else to check. I poured some fuel down the throttle body and it did start after all the other tests.
Iíve also checked all the fuses.

Thoughts?

Thanks!
Hello:

i have what sounds like the same problem, except its with 2 bikes and i dont think its the fuel pumps. both bikes were recently stripped, the fuel injectors tested and cleaned and rebuilt. i know i'm getting fuel flow but dont know about pressure. i did the same thing you did by spraying a fuel into the throttle body and it fired, so its not an electrical spark issue. i have a new LED thats always on so i disconnected that to see if it was affecting the voltage to the plug. again, nope and it fires with the fuel sprayed into the body. the battery was disconnected for months so the fuel injection mapping should have reset to default.

i have a 3rd bike that i also did the same things to but didnt remove the motor as i did on the other bikes. i did remove virtually every connector like i did on these bikes to clean it up, did the fuel injection cleaning, etc. once reassembled, it fired right up!

next up i will check spray but its hard for me to imagine i would have installed two injectors incorrectly. but it sure seems like there is something similar going on here that is keeping both bikes from starting...

thanks for any suggestions.

cheers!
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November 23rd, 2021, 03:54 PM   #4
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I Ride: 2011 FE570S (x2), 2014 Vstrom 1000, 2001 Suzuki 400DR
I have a 2011 FE570 S US model. I replaced the fuel pump, the fuel injector, fuel lines, fuel filter and have placed an in-line pressure tester along the fuel line to the injector. The bike will start up for two seconds and then die all while showing 50 psi which is the correct pressure—roughly 3 1/2 bars of pressure required.

I am fortunate to have extra brains to swap out from an identical bike and that did not change anything.

At this point it’s either a signal to the fuel injector telling to stop spraying or an electrical ignition issue. I’m not quite sure how to check those items.

Are there any kill switches that I should be aware of?

Last edited by Batdorf; November 23rd, 2021 at 03:57 PM. Reason: Added content
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December 3rd, 2021, 07:33 AM   #5
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Having the same issue with my 390. I'm thinking its a clogged injector. Braking it down this weekend. Haven't experienced this with the 570 yet
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