401 svartpilen wont start when HOT

[Kdunk1]

2021 401 Svartpilen 1200 miles
Starts when cold runs great. After 10-20 minutes of riding it won’t start. Turns over, wants to start immediately dies.
Been at the dealership for 4-5 weeks, they are waiting on Husqvarna technical support.
Any suggestions

 

[Zep]

When it gets hot does it run ok or does it die and then won't restart?

Since it is at the dealer not much you can do other than wait or bring it home the same and either fix yourself or find a independent shop.

The dealer must have the scan tool so I am guessing they found no issue with the sensors. a guess

My guess is it is not air or compression related when hot so it is fuel. Either fuel flow restriction or pump or the ECU is giving wrong info due to a sensor.

If it were me I would check for a kinked fuel line under the tank . Also check the IAT sensor for the correct resistance at the current temp.

 

[Kdunk1]

It runs great when it starts. After you shut it down (hot) it won’t restart.
Dealer thought it was battery, I had just replaced that. Then they thought it might be gear position sensor but still the same issue. They do have the scan tool.
I’ll mention what you said.
If they don’t make any progress soon I might take it to an independent shop that was recommended to me.
Thanks

 

[fetor56]

The 401's run hot anyway but it shouldn't run hot enough not to restart .
Since u said it runs great when running and only has this problem when trying to restart when hot i would look at the coolant system (sensor maybe) and progress from there.

 

[gareth79]

It runs great when it starts. After you shut it down (hot) it won’t restart.
Dealer thought it was battery, I had just replaced that. Then they thought it might be gear position sensor but still the same issue. They do have the scan tool.
I’ll mention what you said.
If they don’t make any progress soon I might take it to an independent shop that was recommended to me.
Thanks

Did you manage to find out the problem. My 401 is doing the exact same thing - when I leave the bike for over 1 hour to cool completely cool down, it starts and runs fine. Your help would be greatly appreciated. Thanks