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Old July 11th, 2018, 01:00 PM   #13
jkv45
Rev Limiter
 
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Name: Jay
Location: WI
Join Date: Jul 2013

Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes

Posts: A lot.
MOTM - Jun '18, Oct '16
Quote:
Originally Posted by $wim View Post
Also when I sucked on the vacuum line there didn’t seem to be any vacuum in the line at all
If you mean you couldn't get a vacuum, then either the line or the petcock diaphragm has a hole in it.

Get a new line and see if that changes it, if not it sounds like you need a petcock or rebuild kit. Both are fairly expensive.

We installed a manual (no vacuum shut-off) ebay petcock on one of our Ninjas, and it sucked. It didn't reach down far enough to clear the tank, so when you had to turn it off you had to reach up under the seam of the tank, which was a pain.

I'd recommend an original one or rebuild kit.
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