Shifting,
You know enough to get you by, what more could you ask for? Here experience is the ultimate teacher, but I still manage to failed the pre-req test to Jetting 101.
bryan,
Cold weather could very well be the culprit. If everything else is in order, fresh gas, air filter, etc. then try doing what Shifting suggested and go up one main jet at a time.
You know enough to get you by, what more could you ask for? Here experience is the ultimate teacher, but I still manage to failed the pre-req test to Jetting 101.
bryan,
Cold weather could very well be the culprit. If everything else is in order, fresh gas, air filter, etc. then try doing what Shifting suggested and go up one main jet at a time.
This time of year lean hesitation is pretty common. Before you start changing jets it might be worth looking more closely at the problem.
If your hesitation is from 1/2 to WOT throttle then you are crossing over 2 circuits the needle and the main. Within the needle travel you will be dealing with a large portion of the needle's taper, which has a profound effect on the fuel curve.
It's worthwhile to mark the throttle housing at 1/4 1/2 3/4 and WOT and doing some snap-roll on tests under load between 1/4 & 1/2 , 1/2 & 3/4 etc. The idea being to determine where specifically the hesitation is starting from.
There is a good chance that adjusting the fuel screw and the needle clip position is all you need to add some fuel to the initial throttle opening positions to smooth the transition to WOT. Most riders spend very little time and full throttle , but tend to adjust the main first becuase it's easiest to access. Working from the bottom up will give you a better idea of which circuit is the major culprit.
If your hesitation is from 1/2 to WOT throttle then you are crossing over 2 circuits the needle and the main. Within the needle travel you will be dealing with a large portion of the needle's taper, which has a profound effect on the fuel curve.
It's worthwhile to mark the throttle housing at 1/4 1/2 3/4 and WOT and doing some snap-roll on tests under load between 1/4 & 1/2 , 1/2 & 3/4 etc. The idea being to determine where specifically the hesitation is starting from.
There is a good chance that adjusting the fuel screw and the needle clip position is all you need to add some fuel to the initial throttle opening positions to smooth the transition to WOT. Most riders spend very little time and full throttle , but tend to adjust the main first becuase it's easiest to access. Working from the bottom up will give you a better idea of which circuit is the major culprit.
