Slow leak out of the top of the petcock hose

7oxSin · August 21st, 2013, 02:03 PM

yet another thread about fuel leaks

things i already know:
1) my petcock is bad
2) its been bad as long as ive had the bike
3) the slow leak just started
4) it is coming out of the top of the tube connected to the petcock
5) if i work the hose around it will stop
6) also need to replace the vacuum hose

so im pretty sure i need to replace the hose, and of cource i need to get my cheap ass in gear on rebuilding the petcock.

the things i need help on:

1) a good cheap petcock rebuild kit
2) the size and length of the hose
3) best kind of clamps to use on the hose
4) good cost effective fuel filter
5) @Jiggles to bust out some insurance moneys and buy me all this stuff

tc.young · August 21st, 2013, 03:04 PM

i would suggest new petcock. the rebuilds while replacing all the rubber never take for me, and still leak or leak in off position, etc. bring both hoses to napa or autozone and get a foot of each, they can size them.

fuel filter should be under small engine section, most vintage shops have them as they usually have rusted out tanks. bikemaster or anything generic should be good. on some bigger bikes, running a smaller one can restrict fuel flow but the ninja is a gas sipper so anything that fits the ID of your fuel line should be good. as long as it's just a filter, make sure you don't get one for EFI.

advance auto parts should have all this.

7oxSin · August 21st, 2013, 03:36 PM

awesome, i do all my shopping at Oriely's since i get 50% on most items. my petcock doesnt drip in off, just pours in on and reserve, so a rebuild would fix that problem.

Runeknight95 · August 21st, 2013, 03:43 PM

Here try this first

http://www.ninjette.org/forums/showthread.php?t=141972

MaxxVE · August 21st, 2013, 04:13 PM

I'm having the same issue. I noticed my oil smelled a little like gas at the last change. I pulled the hose off the petcock and sure enough it's got a slow drip while on. I'm hoping I can repair it without spending any money on replacement parts.

Motofool · August 21st, 2013, 04:22 PM

Quote:

Originally Posted by 7oxSin

awesome, i do all my shopping at Oriely's since i get 50% on most items. my petcock doesnt drip in off, just pours in on and reserve, so a rebuild would fix that problem.

Ask for a hose rated for gasoline and another for vacuum.

There is pneumatic valve (diaphragm and O-ring) that avoids fuel flowing down without vacuum.

Use these guides:
http://faq.ninja250.org/wiki/Rebuild...tcock/fuel_tap

http://faq.ninja250.org/wiki/How_do_...fuel_filter%3F

7oxSin · August 21st, 2013, 06:45 PM

Quote:

Originally Posted by Motofool

Ask for a hose rated for gasoline and another for vacuum.

There is pneumatic valve (diaphragm and O-ring) that avoids fuel flowing down without vacuum.

Use these guides:
http://faq.ninja250.org/wiki/Rebuild...tcock/fuel_tap

http://faq.ninja250.org/wiki/How_do_...fuel_filter%3F

you rock yoda!

ill rebuild the petcock here and let yall know how it goes.

Jiggles · August 22nd, 2013, 10:16 AM

Yah man, how much do you need?

7oxSin · August 22nd, 2013, 11:24 AM

Quote:

Originally Posted by Jiggles

Yah man, how much do you need?

LOL

think ill be fine with a couple of them nice helmets.

hows that 300 treating you?

Jiggles · August 22nd, 2013, 01:55 PM

I have a spare HJC that has been dropped a few times, you can have it.

Her tires are melting

n4mwd · August 22nd, 2013, 04:24 PM

I've never seen a rebuild kit for the pregen, but I don't see why not. You can buy the essential parts at the dealer and rebuild it. You need to test your membrane. If the petcock itself leaks out the side or you can suck gas out of the vacuum line, then you need a new membrane. If not, then you might be able to get away with replacing just the o-ring on the membrane valve.

MaxxVE · August 22nd, 2013, 05:48 PM

Does anybody know if the newgen petcock fits the pregen bikes? It seems like replacements are much easier to find for the 08+

n4mwd · August 22nd, 2013, 09:03 PM

Its bolt compatible, but I don't know if it works beyond that. The gasket is slightly different on the newgen. The neck may be shorter on the newgen which would but the knob in a bad spot.

August 21st, 2013, 02:03 PM	#1
7oxSin MSF Coach! Name: Lupe Location: Antioch, Tennessee Join Date: Jun 2012 Motorcycle(s): 2003 ninja 250 Posts: 886	Slow leak out of the top of the petcock hose yet another thread about fuel leaks things i already know: 1) my petcock is bad 2) its been bad as long as ive had the bike 3) the slow leak just started 4) it is coming out of the top of the tube connected to the petcock 5) if i work the hose around it will stop 6) also need to replace the vacuum hose so im pretty sure i need to replace the hose, and of cource i need to get my cheap ass in gear on rebuilding the petcock. the things i need help on: 1) a good cheap petcock rebuild kit 2) the size and length of the hose 3) best kind of clamps to use on the hose 4) good cost effective fuel filter 5) @Jiggles to bust out some insurance moneys and buy me all this stuff __________________________________________________ Hey Unregistered wanna ride the dragon? Ninjette group ride! May 16th-20th Join the Ride!!http://www.ninjette.org/forums/group.php?groupid=35

August 21st, 2013, 03:04 PM	#2
tc.young ninjette.org member Name: tom Location: nyc Join Date: May 2013 Motorcycle(s): '89 klr 650, '00 250r Posts: 177	i would suggest new petcock. the rebuilds while replacing all the rubber never take for me, and still leak or leak in off position, etc. bring both hoses to napa or autozone and get a foot of each, they can size them. fuel filter should be under small engine section, most vintage shops have them as they usually have rusted out tanks. bikemaster or anything generic should be good. on some bigger bikes, running a smaller one can restrict fuel flow but the ninja is a gas sipper so anything that fits the ID of your fuel line should be good. as long as it's just a filter, make sure you don't get one for EFI. advance auto parts should have all this.
	1 out of 1 members found this post helpful.

August 21st, 2013, 03:36 PM	#3
7oxSin MSF Coach! Name: Lupe Location: Antioch, Tennessee Join Date: Jun 2012 Motorcycle(s): 2003 ninja 250 Posts: 886	awesome, i do all my shopping at Oriely's since i get 50% on most items. my petcock doesnt drip in off, just pours in on and reserve, so a rebuild would fix that problem. __________________________________________________ Hey Unregistered wanna ride the dragon? Ninjette group ride! May 16th-20th Join the Ride!!http://www.ninjette.org/forums/group.php?groupid=35

August 21st, 2013, 03:43 PM	#4
Runeknight95 ninjette.org member Name: Derek Location: Boynton Beach Join Date: Mar 2013 Motorcycle(s): 08 cbr1000rr, 2008 + 2012 ninja 250, 06 zx6r (636!) track only Posts: 150	Here try this first http://www.ninjette.org/forums/showthread.php?t=141972 __________________________________________________ http://www.1000rr.net/forums/showthread.php?t=90412 http://www.8thcivic.com/forums/ http://www.facebook.com/profile.php?id=1209877267

August 22nd, 2013, 10:16 AM	#8
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Yah man, how much do you need? __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

August 21st, 2013, 04:13 PM	#5
MaxxVE ninjette.org member Name: Grant Location: Mid-Michigan Join Date: Aug 2013 Motorcycle(s): 2006 Ninja 250 Posts: 83	I'm having the same issue. I noticed my oil smelled a little like gas at the last change. I pulled the hose off the petcock and sure enough it's got a slow drip while on. I'm hoping I can repair it without spending any money on replacement parts.

August 22nd, 2013, 01:55 PM	#10
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	I have a spare HJC that has been dropped a few times, you can have it. Her tires are melting __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

August 22nd, 2013, 04:24 PM	#11
n4mwd ninjette.org certified postwhore Name: D Location: Palm Beach, FL Join Date: Oct 2010 Motorcycle(s): 2006 Ninja 250R, 2007 EFI Ninja 250R Posts: A lot. Blog Entries: 1	I've never seen a rebuild kit for the pregen, but I don't see why not. You can buy the essential parts at the dealer and rebuild it. You need to test your membrane. If the petcock itself leaks out the side or you can suck gas out of the vacuum line, then you need a new membrane. If not, then you might be able to get away with replacing just the o-ring on the membrane valve. __________________________________________________ My Ninja Blog Proud member of ABATE.My NYC Road Rage documentary - CENSORED!
	1 out of 1 members found this post helpful.

August 22nd, 2013, 05:48 PM	#12
MaxxVE ninjette.org member Name: Grant Location: Mid-Michigan Join Date: Aug 2013 Motorcycle(s): 2006 Ninja 250 Posts: 83	Does anybody know if the newgen petcock fits the pregen bikes? It seems like replacements are much easier to find for the 08+

August 22nd, 2013, 09:03 PM	#13
n4mwd ninjette.org certified postwhore Name: D Location: Palm Beach, FL Join Date: Oct 2010 Motorcycle(s): 2006 Ninja 250R, 2007 EFI Ninja 250R Posts: A lot. Blog Entries: 1	Its bolt compatible, but I don't know if it works beyond that. The gasket is slightly different on the newgen. The neck may be shorter on the newgen which would but the knob in a bad spot. __________________________________________________ My Ninja Blog Proud member of ABATE.My NYC Road Rage documentary - CENSORED!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Vacuum hose cross caused leak	Quick1	1986 - 2007 Ninja 250R Tech Talk	9	December 23rd, 2013 03:19 PM
Possible gas leak from carbs or petcock issue	agentbad	1986 - 2007 Ninja 250R Tech Talk	7	December 13th, 2013 07:45 AM
Minor Leak: Lower radiator hose	Alkeplar	2013 - 2017 Ninja 300 Tech Talk	11	October 8th, 2013 07:09 PM
oil leak from an overflow hose?	pinkandblack	2008 - 2012 Ninja 250R Tech Talk	30	June 17th, 2011 10:34 PM
Argh! Gas leak from petcock.	Strange	1986 - 2007 Ninja 250R Tech Talk	8	March 17th, 2009 03:07 PM