Should the vacuum tube be hooked to both intake boots or is one enough. I currently have mine hooked up to one and a cap on the second. Bike runs fine at idle, runs fine a highway speeds but after running a high RPMs for a while, when slowing down at a stop (without gearing down, just pull in the clutch a brake to stop) the idle drops way down and it stalls. If I give it a little throtle just before stopping it comes back and no problem.
You can post your question, answer or comment as a guest. Or
enter your e-mail to join the forum and get notifcations of new messages.
More 1981 Yamaha XS 400 Special information
Our discussion forums are intended for short messages. We also welcome more extensive motorcycle reviews.
Bikez also recommends that you check out the technical
data and the riders' rating for the 81 Yamaha XS 400 Special.
You can also rate it yourself. Use our efficient motorcycle
classifieds to sell or
buy
this bike. Your motorbike gets a high quality presentation. Ads are free.