Husaberg FE 570 - Bike won’t start

Check your fuel pressure should about 45 to 50 psi (just a guess) if so replace fuel pressure regulator

Stad79 said:

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!

Click to expand...

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!

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?

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

I had similar (progressively worsening) issues on my 2011 FE570S. I was at the point of selling/parting out the bike. I spent many hours searching/reading posts of others having similar issues. These were my issues, hot running temps at all times (much worse when not moving in traffic), loss of power (hard to tell at first, just felt sluggish), stalling/"flame out" when starting after a traffic light for example, and eventually it would not run at all for more than 10 sec. but would run with starting fluid down the throttle body. What I did to troubleshoot, check for spray and proper pattern at the injector, check voltage at the TPS, advanced full CCW-~.750 helped slightly (and makes sense now as the injector was not flowing as it should have been), replaced TBS, replaced plug, cut 1/4" off of coil lead, new spark plug cap, removed 90% of the wiring harness from the bike (from rear to around the throttle body, beyond that didn’t seem necessary) and checked all wires for crush or other damage (at the subframe under the gas tank is a terrible pinch point. Not as bad of a project as I thought it would be, but not fun. Had to cut off all factory rubberized plastic sleeves and retape with high temp fabric automotive loom tape from Amazon, worked well), cleaned all connections at wiring harness, checked resistance at coil and stator (both were within spec). cleaned injector two ways; 9V battery method while on the bench with carb cleaner and the second with injector connected to bike hose (from radiator overflow) over injector nozzle and carb cleaner straw connected to hose forced cleaner backwards through the injector while cranking the bike. This helped but only for a 1 mile test ride than all symptoms returned. Finally, I purchased a new injector, changed TBS voltage to factory, and all seems resolved. I so far have taken it on a ~8 mile ride with not a single pop or stall. Like I remember it back in 2013 when I bought the bike. Hopefully this helps someone who faces the same problems. What seems tricky on these bikes as that all fueling issues, regardless of the cause, manifests itself with the same, or very similar symptoms. Looking back, this issue was not a switch flipping, but progressive as I stated earlier. On the last long rides, I spent many hours, in various locations, pulling the bike apart but learned a great deal about the bike. Moral of the story is to filter, filter, and filter your fuel and carry an extra injector. Hopefully this will help the next person that faces poor fueling issues.