FE450 2010 problems. Engine stalling, help desirable

Dear members,

I'm having trouble with my 2010 Husaberg FE450.
I've got the bike for a couple of months now but I'm facing some problems I can't solve...
It all started after I washed the bike. The bike started to stall and I've had difficulties to start it again. After I dried the air filter, the bike drove great, for a while.
After a short period of time, the bike began to develop missfires and won't idle anymore. This occurred when the bike was warm.

I started searching on fora and my symptoms matched the symptoms of a dying fuel pump, a common failure. So I installed a new one, together with new in-tank fuel filters. Unfortunutely, this didn't solve the problem.
After that, I've tried the following things:

New iridium spark plug.
New spark cap.
New spark lead.
Cleaned the injector, while opening it with a 9v battery.
Removed the small filter inside the injector.
Checked for a small inline fuel filter, my bike didn't have one.
Re-calibrated the TPS using a multimeter. 0.64v when closed.
Cleaned the fuelline coming from the tank, together with the coupling.
Cleaned the fuel rail.
Cleaned the air temperature sensor.
New airfilter.

None of this solved the problem unfortunately. The bike keeps stalling and it sounds like it floods when I twist the throttle fast. The bike backfires and cuts out after I do this.
Is there someting I'm overlooking?
Any help or suggestion is highly appreciated!

Kind regards,

Corné

Hi Taffy,

Thankyou for your input. I'm going to check the fuel line which sits in between the fuelfilter and the exit part of the fuelpump assembly. I allready replaced the one that goes from the actual pump to the filter for a rubber one. Thats the line shown in the picture, the fuel filter is replaced aswell.

I also tried to adjust the idle speed. Unfortunately, this did not solve the poor running problem.

Any further suggestions are more than welcome.

Kind regards,
Corné

Changed the other fuelline aswell, without result. The bike keeps dying on WOT and when you quickly twist the throttle. It also backfires while doing this. I’ve also disconnected the temperature sensor and shorted it when the bike was warm, this made no difference and it only made the warning turn light on.

I’m running out of ideas and I was wondering if anyone has a suggestion what could cause these problems. Thanks in advance!

Kind regards,
Corné

I've ordered a new injector, I will post the results when I've installed the part.

I've changed the injector for a brand new one, still no results...
The bike keeps bogging at WOT and even stalls sometimes.
The bike also "floods" when I quickly twist the throttle and then it dies again.

I'm running out of ideas. Does anyone has a suggestion what could solve these problems?

Thanks in advance.

Kind regards,

Cor

rikschipp said:

Here's a long shot, seems you've covered the fuel side, but if you have weak spark it will show up more at high load- quick throttle opening and/ or WFO.

Make sure ignition coil is earthed correctly- have seen loose bolts or when frame has been painted make the earth less than perfect. Make sure it's clean metal underneath coil mounts. Maybe check coil resistance specs while you're there.

Rik

Click to expand...

Hi Rik,

Thanks for your tips. I've sanded down the coil earths, there was a lot of corrosion on these surfaces. I've also checked the coil's resistance. The manual says it needs to be in between 0.425 and 0.575 ohm. Mine was 0.9 / 1.0 ohm.
To much resistance results in a weak spark, just like you said.

I'm trying to borrow an other coil from a friend so I can test it out. I will let you know what the results are. Again thanks for your input!

Kind regards,

Corné

rikschipp said:

Here's a long shot, seems you've covered the fuel side, but if you have weak spark it will show up more at high load- quick throttle opening and/ or WFO.

Make sure ignition coil is earthed correctly- have seen loose bolts or when frame has been painted make the earth less than perfect. Make sure it's clean metal underneath coil mounts. Maybe check coil resistance specs while you're there.

Rik

Click to expand...

Hi All,

I've cleaned the coil earths and replaced the coil for a new one. Still no results... The bike keeps stalling when I twist the throttle. I've also disconnected the MAP sensor but this didn't help either. I've made 2 videos about the problem.




Anymore suggestions are more than welcome!

Kind regards,

Corné

Rainerio said:

Shot in the dark. The throttle body has a cold start knob in is normal out is cold start. Did you check the earth by the battery it’s at the frame. Maybe you should try a module off a other bike. Good Luck

Click to expand...

Hi Rainerio,

I've checked the cold start knob but this didn't solve the problem.
I've also sanded down one earth point near the battery, how many are there?
Unfortunately I don't know where I could borrow an other module...

Kind regards,

Cor

cambo said:

Check the resistance of the the spark plug cap you mentioned you changed it but it’s good to check the resistance. Mine had a similar stall out issue

Click to expand...

Hi Cambo,

I will check it and post the result, thanks for the tip!

Kind regards,

Cor

Hi all,

I've checked the MAP sensor for any faults but it seems to work as it should. But I've discovered something else.
The sparkplug does not spark when you fully twist the throttle!
It does spark normaly but the spark cuts out as soon as you fully twist the throttle. I've checked the values of the TPS but these where stable, even when the throttle was fully open.
Does anyone has any thoughts on this?
Please let me know!

Kind regards,

Cor

Fixed!

Hi all,

I've finaly fixed the mighty Husaberg!
After checking the timing, I noticed that de spark plug was cracked.
I've also cleaned a couple connectors which are sitting underneath the tank. These connectors came from the stator and were very dirty. Plenty of dirt and mud.
I've reïnstalled the old spark plug (left one) and cleaned the connectors. This did the trick. No more bogging, no more stalling, just pure fun. The Berg runs like new. It ought to be since most parts are new

Thanks for all the tips.

Kind regards,

Cor