cold start chatter for 5or6 seconds

[nh 1500 owner]

Have a new 2025 and on cold start up i have a chatter for a few seconds almost sounds like oil starvation 2024 never sounded like this ??

 

[Clubin]

COld start at what temp? I’ve done one at -25c and it started fine. You could tell it was a cold start though.

 

[JCLND]

My 25 stumbled like an old carbed cold blooded motor. Took it in and dealer reflashed the ECM with an update from Polaris. made it
much better even at -15 -20 after sitting in the trailer for a week.

 

[nh 1500 owner]

COld start at what temp? I’ve done one at -25c and it started fine. You could tell it was a cold start though.

Starts ok just sounds like valve train chatter for 5 seconds or so until it gets oil pressure ok on starts when warm not sure but maybe oil filter has a bad check valve??

 

[MIbowhunter]

Starts ok just sounds like valve train chatter for 5 seconds or so until it gets oil pressure ok on starts when warm not sure but maybe oil filter has a bad check valve??

My 24 does the same.

 

[gdh]

I have a 24 and did this after 1st oil change and only after it sits for few days. Talked to dealer and they tell me its normal as the cam chain tensioner is adjusted by oil pressure. Has not ben a problem but I only have 1800 miles on unit. It sounds bad but again dealer says its normal.

 

[nh 1500 owner]

I have a 24 and did this after 1st oil change and only after it sits for few days. Talked to dealer and they tell me its normal as the cam chain tensioner is adjusted by oil pressure. Has not ben a problem but I only have 1800 miles on unit. It sounds bad but again dealer says its normal.

Dont think its normal sounds bad to me going to have to make a trip to the dealer

 

[Captain Bob]

I have a 2025 and had those same issues with cold starting, one of the latest updates specifically addressed the cold weather start issue, much better now.

 

[DrNautica]

I have a 2025 and had those same issues with cold starting, one of the latest updates specifically addressed the cold weather start issue, much better now.

I have this issue also on my 2025 but mine is more of a stumble/backfire and will sometimes stall. Do you have any idea of when the latest software update release was made? Mine was built late June, 2025. Had it back to dealer for this issue a couple months after delivery but no newer re-flash was available then. Thanks.

 

[jj46]

The update came out in October I believe.
The only drawback to the update is they really richened the idle fuel mixture (typical for cold start issues)... it chokes you out when it's warming up.