Honda Pacific Coast ipcrc Archives

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vacuum piston not functioning
Written by jdoyle_53 on 6/25/2012 at 01:58 am

Can someone point me to a discussion or link describing the workings of the
carburetor vacuum piston on a PC800? My left carb piston doesn't move ? right
carb seems OK even after swapping diaphragms between sides. I left gas in it
last winter expecting to ride but did not. Not much of a rider and no mechanic
at all, I relied on posts here for direction to clean up the mess and have
finally had some success. I replaced low speed jets since I could not get them
clean (a wee little light peaks thru the length of the new ones) and installed a
new fuel filter to get smooth running. New plugs fixed
starting/acceleration/power problems. I rode the misses across county to visit
friends this afternoon ? will ride to work some next week. Now I am baffled by
the non functioning piston on a machine that seems to run just fine and would
like to see if I can get this straight.

Thanks in advance. I live sort of off the grid so I will catch up with any
replies when I venture into civilization.