2020 Rocket 3 GT won't start first go when cold

[Gimlet]

Triumph knows there is a problem because the two year warranty doesn't cover the battery which is only covered for one year.

 

[Vector]

Trickle charger, problem solved.

 

[20R3GT]

Hi there guys! I have 2020GT and first year in 2021 start notice same thing happening in cold weather! Crunk first time up to 5-6 time no start, after second time first crank or second it’s start right up! Trying different 87-93 gas, no help! Tight and loose fuel cap no help! Next riding season good guy Chicagorocket was kind enough to download me panner tune and first try was bad because battery was on bad voltage! I changed it and next day he downloaded without issues 20 minutes tune and since than I have no problem in cold weather! I guess it’s Battery or something in tune!! And battery is super small for 2500cc because on my old Vrod muscle I have 430 cranking ampers and engine was half off size 1250cc

 

[Einar]

Hi there guys! I have 2020GT and first year in 2021 start notice same thing happening in cold weather! Crunk first time up to 5-6 time no start, after second time first crank or second it’s start right up! Trying different 87-93 gas, no help! Tight and loose fuel cap no help! Next riding season good guy Chicagorocket was kind enough to download me panner tune and first try was bad because battery was on bad voltage! I changed it and next day he downloaded without issues 20 minutes tune and since than I have no problem in cold weather! I guess it’s Battery or something in tune!! And battery is super small for 2500cc because on my old Vrod muscle I have 430 cranking ampers and engine was half off size 1250cc

Based on your experience, I'm betting it's a fueling issue with the stock tune. I connected a fully charged automotive battery (~600 Ah) and my Rocket still wouldn't start on the first try but had no problems on the second.

 

[20R3GT]

Based on your experience, I'm betting it's a fueling issue with the stock tune. I connected a fully charged automotive battery (~600 Ah) and my Rocket still wouldn't start on the first try but had no problems on the second.

Make sense program is free only OBD reader 120$ and 15$ registration fee, download it or sand it out to moormafia your ecu for 300$ and he can tune it out ! Kill two birds with one stone I guess more hp and no cold start problem