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FX450 Off idle sputtering. HELP!

Joined Apr 2016
4 Posts | 0+
Flagstaff, AZ, USA
I'm new to both Husabergs and fuel injected bikes. Point me in the right direction.

I just bought a 2010 FX450. It had a new fuel pump installed last year. It runs fine at high rpm, but when I blip the throttle off idle, the engine sputters and dies.

If this were a carb bike, I'd start by checking the accelerator pump, fuel screw & pilot jet but I have no experience with FI bikes.

So far, this is what I am planning to check: battery voltage & connections, the spark plug & cap, the fuel pump pressure, the fuel pump filter, the in-line fuel filter, the fuel line inside of the tank, and the TPS.

Am I missing anything?

What is the TPS voltage or resistance suposed to be?

Thanks for any tips or advice.
 
Don't know that is will help but you should clean the injector. Use injector cleaner not carb cleaner may F the injector!
 
Last edited:
Check the spark plug boot look for arching in the dark
Then try new spark plug

easy things first


keep us posted with the results

TPS .601 stock .610 it runs better

Ohm rating on TPS 1.5- 2.7

TPS

Yellow = signal or wiper wire
Blue= power wier + 5v
Black = EFI computer gorund
 
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