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Old 04-01-2007, 07:16 AM   #1
micio OP
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Joined: Aug 2006
Location: New York Sh***y
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Question Leaky LC-4 petcock question for ya

I've got a slooooow leak on my '02 Duke ll petcock (it's the Mikuni CK-69 '96).

I haven't had it apart yet but I'm guessing that there's a lil' seal in there that needs replacing. Trouble is, I can only find the petcock assembly complete for about $50...

Anybody know if an automotive gasket will cure it?
Or do I need to man up and buy the whole thing?
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Old 04-03-2007, 01:02 AM   #2
bmwktmbill
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I took mine off and cleaned it and put in a new O-ring.
It leaked just the same. It is a bad design, take it apart, you will see.
Better to cut an old piece of fuel line with a plugged end and stick that on the petcock outlet when the tank is off.
IMHO.
bill
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Old 04-03-2007, 02:42 PM   #3
micio OP
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Thanks, Bill. If cleaning and a new o-ring won't fix it, and it gets to be real bad, I'll kick down for a new one.
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Old 04-03-2007, 09:51 PM   #4
lvdukerider
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The one on my 00 Duke II just started leaking last week. I guess the 50 bucks I spent to order a new one wasen't wasted then.
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Old 04-06-2007, 08:29 AM   #5
ktmMike
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Lengthen the fuel line a bit and add an aftermarket in-line petcock, then just leave the stock one open.
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Old 04-06-2007, 09:19 PM   #6
lvdukerider
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I hear what your saying but mine is leaking around the outside of the part that you turn. Plus I just picked up the new one up from my dealer today. Thanks for the idea though.
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