Carb Sync

[Tilyn62]

I have an 85 VMax, seemes to run and idle well. Just got the bike recently so thought I would check carb sync with my DigiSync. Carbs 1 and 2 on left are 63 and 62, right 3 and 4 are 53 and 52. Adjusting per the service manual doesn't seem to bring RH close to reference carb. This is at 1000rpm. Any ideas?

 

[Fire-medic]

This helps when troubleshooting. The way to remember the order of cylinders is to start with #1, and draw/print a capital letter 'N.'

Honestly, if it seems to run OK and it doesn't 'hang-up' at a higher RPM when you blip the throttle, consider just riding it as-is, set as best as you can get it.

What kind of shape is it in? How-stock is it (carb jetting, airbox, exhaust, ignition)? Have you taken a look yet, inside the carburetors? Compare the brass in-there to these specs:


http://vmoa.net/VMX12-Service-Manual01.pdf

 

[one2dmax]

Don't set them to a specific number. use the adjustment screws to set them to each other.
Left adjusts left pair, Right Reat adjusts the right pair, right forward adjust the left to right pairs.