I just recently bought two 05 400's (both relativity low hours), one had a 45 pilot put in (not me, former owner had dealer do it) while the other one is stock.
Both start right up but continue to cough / stall for a good 10 minutes if not longer in 50 degree weather.
Air filters are clean.
If I feather the throttle above normal idle they will keep running but this is bordering on ridiculous how long these take to warm up.
I see the choke mod on here calls for a 42 so not sure why dealer installed a 45 pilot but 45 seems to make no difference compared to the stocker.
Maybe 1st thing I should do is check the valve adjustment and then proceed back to the carbs if they are not off at all ?
All the Hondas I own through the years were always cold blooded but these 400's win the cold blooded award for sure!
The warm up time length (In no rush) really does not bother me though and my main goal is to get them to stay running on their own with out having to keep feathering the throttle constantly.
I did not try warming up with out airbox lid on but would suspect that would make the problem even worse since they are lean to begin with from factory, I will try that today though...
Both start right up but continue to cough / stall for a good 10 minutes if not longer in 50 degree weather.
Air filters are clean.
If I feather the throttle above normal idle they will keep running but this is bordering on ridiculous how long these take to warm up.
I see the choke mod on here calls for a 42 so not sure why dealer installed a 45 pilot but 45 seems to make no difference compared to the stocker.
Maybe 1st thing I should do is check the valve adjustment and then proceed back to the carbs if they are not off at all ?
All the Hondas I own through the years were always cold blooded but these 400's win the cold blooded award for sure!
The warm up time length (In no rush) really does not bother me though and my main goal is to get them to stay running on their own with out having to keep feathering the throttle constantly.
I did not try warming up with out airbox lid on but would suspect that would make the problem even worse since they are lean to begin with from factory, I will try that today though...