Wokring on another memebrs bike, issue is a low end miss. Idles nice with an occasional pop or sputter but over all smooth idle. Synchs up nicely, but as it is idling every now and then all four will drop off to about nothing on the Carbtune.
Running about 2k turn the throttle and it starts missing, more throttle you give it the more it misses. Adding choke does not help. As it gets up to maybe 3k or so it seems to lessen the miss, but may just be running faster so it is less noticable.
So far, we tried colortuning, synching, no change. Checked the pick-up coils, when I tugged on the white wire of the lower coil the bike died. So we swapped pick-up coils with a known good set. Now the coil wires have no effect, but it still has the same miss.
So we pulled the carbs off. I found one diaphram had a pin hole which I put RTV over, I found another where about half the seam where the main diaphram meets the lip was able to see through it, RTVd it also. Also noted the diaphram in no 4 was soaked with gas, like it dripped off of it. And that no 4 mix screw was black at the tip.
Checked the pilot jet, main jet emulsion tubes all looked fine. Still the same mis under load in low RPM.
Any suggestions are welcomed.
Running about 2k turn the throttle and it starts missing, more throttle you give it the more it misses. Adding choke does not help. As it gets up to maybe 3k or so it seems to lessen the miss, but may just be running faster so it is less noticable.
So far, we tried colortuning, synching, no change. Checked the pick-up coils, when I tugged on the white wire of the lower coil the bike died. So we swapped pick-up coils with a known good set. Now the coil wires have no effect, but it still has the same miss.
So we pulled the carbs off. I found one diaphram had a pin hole which I put RTV over, I found another where about half the seam where the main diaphram meets the lip was able to see through it, RTVd it also. Also noted the diaphram in no 4 was soaked with gas, like it dripped off of it. And that no 4 mix screw was black at the tip.
Checked the pilot jet, main jet emulsion tubes all looked fine. Still the same mis under load in low RPM.
Any suggestions are welcomed.
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