Reply To: Bike only runs on one cylinder once moving – 2009 gt250 carby
Does it accelerate OK at 1st to 3rd gear ? and what RPM is 30mph ?
Grab a fresh set of CR8E , fit them in and ride for a short distance, come back, let it cool down, take the plugs out , take a few pictures and upload them here, so we can see what’s going on?
Either we have a fueling problem or the HT Caps (not coils) are waning or the carbs themselves need attention.
As it’s idling, spray carb cleaner on the rubber intake pipes and find out if the revs change ? (It could be a good idea to change the O-RINGS under the intake pipes as if they are caked up dry , old etc, they will cause all kinds of weird issues when the vacuum system is not sealed tight.