14-05-17, 12:53 PM
It's possibly none of the above, carb bikes running poorly at below 2- 3k is normally and indication there's an issue with the pilot circuit i.e. blocked pilot jet/s.
Carb balance and TPS's this is a very common mistake in that owners test the TPS position see it's out and move it......wrong! The TPS is a datum set at the factory unless you move it somehow or it fails it's never going to change, what's moving is the carb butterfly. The most important thing about carb balance is to get the Hg level correct at idle on No4 which is what the TPS takes it's reading from, this is done not by moving the balance screw but by adjusting the pilot jet. Then adjust all the other so their Hg is within tollerance, now you balance all the others to No4.
The amount of owners who bring their bikes to me saying the carbs have been balanced by a stealer etc when they are miles out.
Carb balance and TPS's this is a very common mistake in that owners test the TPS position see it's out and move it......wrong! The TPS is a datum set at the factory unless you move it somehow or it fails it's never going to change, what's moving is the carb butterfly. The most important thing about carb balance is to get the Hg level correct at idle on No4 which is what the TPS takes it's reading from, this is done not by moving the balance screw but by adjusting the pilot jet. Then adjust all the other so their Hg is within tollerance, now you balance all the others to No4.
The amount of owners who bring their bikes to me saying the carbs have been balanced by a stealer etc when they are miles out.
Later