Petcock leak - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 4 (permalink) Old 02-17-2016, 11:55 PM Thread Starter
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Unhappy Petcock leak

So, I recently laid my bike down at high speed and I went from smelling gas, to a visible leak out of the petcock. Now it could be just not seated firmly because of the accident, but I don't think so.

It only leaks when the engine is running and in the ON position. Any thoughts? I know, pretty loose amount of information, but I have zero prior knowledge fixing bikes or cars. I'm great at a schematic read tho.

Basically I'm a newbie, but generally a good learner.
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post #2 of 4 (permalink) Old 02-18-2016, 01:04 AM
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1) check all fuel lines
2) if it is the petcock itself, you can rebuild it or replace it (same one or tw200 petcock)

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #3 of 4 (permalink) Old 02-18-2016, 06:28 PM Thread Starter
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Ill take a look at let you guys know! Gotta throw on another left side peg down too. I'm thinking I can throw the rear one on there till I can get my hands on another. Oh and gotta get my rear turn signal put back on (same side)
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post #4 of 4 (permalink) Old 03-14-2016, 08:33 PM
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You went down at high speed and your worried about the bike? Something is messed up in the petcock. It only leaks when the engine is running because it requires engine vacuum to open the petcock. My petcock is also starting to leak, though I didn't crash it. This is the third time on a bought new 2002. Ethanol gas melts all the rubber parts in the petcock. I rebuilt it twice before, but I think I'm going to get a TW200 petcock this time.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
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