Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
12-28-2016, 06:09 AM,
VStar 650 Classic Carb Sync Question
Hi Folks,

I have a VStar 650 Classic and figured it should be easy to do my own carb sync, following the descriptions I found in the Yamaha Service Manual and videos on the web.

I found the two sync ports, one plugged, the other connected with a hose to the Air Cut Valve Assy. As I wasn't sure whether these were the right ones, I connected the two ports with a long 3/16" PVC hose that I was about to use to build a simple difference manometer, i.e. use the same configuration as when measuring the difference, just without the oil in the hose. However, the bike didn't really start anymore when I did that. It seems that disconnecting the hose to the Air Cut Valve Assy destabilizes the carburator system too much.

I am now considering a t-junction to avoid having to disconnect the hose to the Air Cut Valve, although the videos and descriptions around suggest that it should work without. Unfortunately none of the videos I found shows clearly what to hook up
where and what to do with any dangling hoses.

I would be grateful for suggestions.
02-24-2017, 04:22 PM,
RE: VStar 650 Classic Carb Sync Question
Are you 100% sure you don't have any air leaks in the manometer?
Possibly Related Threads...
Thread Author Replies Views Last Post
  Bike will run good and then cut out and vice versa. Carb Issue AlbinoRyno88 0 740 08-29-2018, 04:07 PM
Last Post: AlbinoRyno88
  Carb issues Exodis 0 1,037 04-25-2018, 10:49 PM
Last Post: Exodis
  Cleaned Carb | Idles without Choke but can't rev engine nm8shun 0 1,161 11-27-2017, 10:28 PM
Last Post: nm8shun
  2000 650 Carb reduild questions apbling 1 1,833 08-23-2017, 10:31 AM
Last Post: apbling
  2003 1100 Vstar Carburetor question amauro 1 2,101 07-04-2017, 07:52 PM
Last Post: amauro
  V Star 1100 carb sync cmHg RuggedNorth 0 2,015 03-15-2017, 06:01 AM
Last Post: RuggedNorth
  2006 1100 midnight custon carb specs joshobermueller 0 1,577 01-15-2016, 02:30 AM
Last Post: joshobermueller
  Cost to clean, rejet, sync carbs??? pablotech1 2 3,957 09-21-2015, 03:20 PM
Last Post: pauli466
  Carb change after AIs removal. johnvelo 12 9,307 12-18-2014, 12:27 PM
Last Post: Keith
  Which carb rebuild kit? Bulldog7906 11 8,714 07-15-2014, 11:28 PM
Last Post: nick59

Users browsing this thread:
1 Guest(s)