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This spring my bike started running badly. Now it idles fine after I shut off the choke but the more throttle I give it, the faster it dies. I have had the carbs apart and cleaned them several times and have never found anythng in them. Any ideas?
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Check air filter- clean or replace,
Make sure you have fresh fuel,
A new spark while you are giving it a service,
Do you know how to tune the saw?
Start with basic settings 1 turn on the low and 1 turn on the high
And adjust from there,
You might have turned the idle up too high.
The choke should always be fully in when saw is running.
Hope this is a good start
It sounds to me like your main jet or high speed circuits could be plugged up in the carb(s) or you could have water in the fuel. If you are reasonably mechanically inclined, I would suggest removing the carbs and giving them a good cleaning. You might want to give it a fresh set of plugs and a new air and fuel filter while you are at it.
Sounds like the idle circuit in the carb is restricted. The engine is running on the choke only. When the engine reaches a certain temp the fuelthat does get is more readily burned allowing you to back off the choke. The choke probsbly can't be completely opened? right? Fuel quality is also something to consider Oil content in fuel affects combustion temps and volatility. _good luck_Ned_
How good did you clean the carbs? The idle jets usually have small holes along the side, and if they are blocked with dirt or bad fuel, it won't idle. Make sure ALL of the passages are clear, and all jets are clear, through the center and holes in the sides of the pilot jets.
when you rejetted, did you also change the idle jets or just the main jets? if you didn't change the idle jets, that would probably help. remember you might also want to raise the float level height just a little bit to compensate for the extra fuel going out.
first drain the carby, then set your air mixture screw 2 turns out, from the fully turned in position. The starting proceedure is as follows, when the engine is COLD, turn on fuel, pull on the choke fully, and kick the engine over. DO NOT use any throttle, when the engine is cold, and the choke is on. Remember Choke on, NO throttle. When warm, no choke, and a little throttle when kicking.
sounds like you might have some trash in carb being a clogged pilot or main or needle seat in not letting in the proper amount of gas check all passages and use fresh gas if it has been sitting
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