- Location
- Point Pleasant, NJ
After my porting and bore job I got my ski dialed in pretty close to where I want it, just has to mess with idle screws to get it to idle after first touch of start button
But after I do a wot run, maybe 10 seconds, I let off the throttle and coast to idle speed, if I hit the gas it feels like it's loaded up excessively for a second
If I blip throttle it will go away at low speed until I got wot again
Also on stand if I rev it it will seem like it hesitates if I have the rpms high then back low and hit it again
Seems kinda strange to do it on stand with no load on it
I remembered this on group k
Engine Hesitation When Accelerating After a High Speed Deceleration
You may find it desirable to increase the number of anti-siphon valves (part# BN34/107), If you ride very fast and find that you have a noticeable stumble when reopening the throttle after a long, high speed deceleration. This is caused by excess fuel in the carb. The engine revs fairly high while decelerating, but it uses very little fuel. The fuel pump still pulses hard, but there is no demand for the fuel. A small amount of fuel will overfill the fuel chamber, leak through the high speed circuit and get deposited on top of the closed throttle valve. This fuel causes a momentary rich condition when the throttle is reopened. The solution is to use one or two additional anti-siphon valves. Never use more than two extra, and recheck your calibration after installing any extra valves; in some cases extra valves can adversely affect throttle response
I haven't heard many people adding more, is it a common thing to do or am I dealing with another problem?
I just fully rebuilt carbs with mikuni parts too even though they didn't need to be done (had carbs out anyway for port jetting)
But after I do a wot run, maybe 10 seconds, I let off the throttle and coast to idle speed, if I hit the gas it feels like it's loaded up excessively for a second
If I blip throttle it will go away at low speed until I got wot again
Also on stand if I rev it it will seem like it hesitates if I have the rpms high then back low and hit it again
Seems kinda strange to do it on stand with no load on it
I remembered this on group k
Engine Hesitation When Accelerating After a High Speed Deceleration
You may find it desirable to increase the number of anti-siphon valves (part# BN34/107), If you ride very fast and find that you have a noticeable stumble when reopening the throttle after a long, high speed deceleration. This is caused by excess fuel in the carb. The engine revs fairly high while decelerating, but it uses very little fuel. The fuel pump still pulses hard, but there is no demand for the fuel. A small amount of fuel will overfill the fuel chamber, leak through the high speed circuit and get deposited on top of the closed throttle valve. This fuel causes a momentary rich condition when the throttle is reopened. The solution is to use one or two additional anti-siphon valves. Never use more than two extra, and recheck your calibration after installing any extra valves; in some cases extra valves can adversely affect throttle response
I haven't heard many people adding more, is it a common thing to do or am I dealing with another problem?
I just fully rebuilt carbs with mikuni parts too even though they didn't need to be done (had carbs out anyway for port jetting)
