I am experiencing an unstable acceleration problem at low RPM with the I/S and a flat spot when starting off. This condition is getting my attention especially in slow traffic and 2-up. I changed spark plugs today and very little help. The flat spot is particularly bothersome when taking off as the RPM does not follow the throttle and if I give it too much throttle--well you know what that causes with a Valkyrie. Bike starts easy but sometimes not easy to keep running until warmed up.
Standing beside the bike and slowly advancing the throttle you can tell a little roughness in the RPM and about 1500 RPM it wants to go. I am guessing this is about change-over from primary to secondary. I have run some Sea Foam through it and no help. I am wondering if this might be a candidate for a carb sync??? Also, wonder about ethanol. The bike has 13K on it and yes, it does need more driving. I went to my local wrench today, who is a Valk driver, and did not get the feel they want to be bothered with a sync job. They have not done one is some time and may not have equipment. I would not have asked them but I do not have a sync setup nor have I ever done one, but may be better off trying it rather than going to the wrench. Any suggestions on this problem will be appreciated. If I have to go to a wrench what do I expect to have to pay? Any recommendations on where to get a good sync job I can travel--located in central SC.
