If you are letting the bike idle with the choke on, even part way, you could have carboned up your plugs.
You dont need to let the bike warm up anymore than the time it takes to check your lights and adjust your mirrors. Push the choke in till its running at a normal idle speed and ride off.
About half a mile down the road push it in all the way.
When you are riding the bike the choke is only giving it a slight bit more gas for that first half mile. But when the bike is idling with the choke on, its a very fine balance between flooding the engine and stalling it out.
With a manual choke its nearly impossible to let the bike sit and idle for a few minutes while keeping the mixture right. You would have to keep nudging the choke in a bit every ten seconds as the heads warm up.
As long as you are not getting on the throttle hard for the first couple miles, the bike will warm up just fine as you ride it.
If you think the carbs need to be cleaned, goto walmart and get a bottle of SeaFoam from the auto department fluids shelf. Its about $10. Put 5 ounces in a full tank of gas and let that run thru the carbs.
As long as the bike is running (gas is flowing thru the jets) the seafoam will do its job - google seafoam on this forum - there are literally hundreds of bikes every year that are brought back to top form running a tank of the stuff thru. People cant believe it works so well, but it does.
Then if you still feel like you need to clean your carbs, have at it. But normally you should not have to tear carbs apart unless the bike wont run at all, or its leaned out so bad you cant ride it.
Last edited by KCW; 07-30-2018 at 01:27 PM.