SixSixoh6
Zone Head
Posts: 660
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posted July 16, 2010 07:43 AM
Fuel Cap Hiss
Has anyone really found a fix for this? Im really starting to get tired of hearing it. Seems to be a common issue on all kawis
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2006 ZX-14: Murdered out, in the dirt, extended, sprayed, air shifted, geared--GONE
2009 ZX-14 SE--has two wheels and an engine
  
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SteveWFL
Moderator
Posts: 27920
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posted July 16, 2010 07:45 AM
yup, my ZX14 did it and My C14 does it and my other branmds don;t...but whats the big deal
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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Compton
Zone Head
Posts: 969
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posted July 16, 2010 09:18 AM
I put a vortex cap on mine, and took the smallest drill bit i had and drilled a little hole in the cap.. i mean tiny and never had a hiss problem.
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b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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gilberjj
Needs a job
Friend of Fast
Posts: 3196
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posted July 16, 2010 09:25 AM
The used to be a thread explaining how to fix it. I believe it went something like this........
1. Take the contraption all apart.
2. Cut off 2 coils off the spring
3. Put it back together
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted July 16, 2010 09:27 AM
I am assuming Taking 2 coils off the spring dosent allow it to seal. I wash my bike with water a lot, and if you do so I don't think this would be the best ideas.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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LAB3
Needs a job
Posts: 2977
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posted July 16, 2010 09:53 AM
My 1986 FJ1200 has done this for 20 years as does my 14. I would think the vent of pressure is a good thing. Not sure I would mess with it. hey I am no expert but the factory did this for a reason???
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gilberjj
Needs a job
Friend of Fast
Posts: 3196
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posted July 16, 2010 09:54 AM
quote:
I am assuming Taking 2 coils off the spring dosent allow it to seal. I wash my bike with water a lot, and if you do so I don't think this would be the best ideas.
I didn't do it to my bike, but I thought about it. I just remember reading how to make it stop.
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SteveWFL
Moderator
Posts: 27920
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posted July 16, 2010 10:12 AM
i'm not taking any measures to unseal my tank, I'll let the damn thing hiss lol
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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rich s
![]()
Posts:
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posted July 16, 2010 10:23 AM
I started mixing water with my gas (50/50) and the hiss went away plus I did not have to spend as much to fill the tank.
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gilberjj
Needs a job
Friend of Fast
Posts: 3196
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posted July 16, 2010 12:04 PM
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LAB3
Needs a job
Posts: 2977
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posted July 16, 2010 12:09 PM
The steam from the water will clean off the carbon on the top of the pistons. The hiss will go away but a new sound will come knocking at your door. :-) Funny pic but he looks a liitle drunk.
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SixSixoh6
Zone Head
Posts: 660
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posted July 16, 2010 12:28 PM
hmm i was just going to get one of those spin in caps. im sure ill figure something out
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2006 ZX-14: Murdered out, in the dirt, extended, sprayed, air shifted, geared--GONE
2009 ZX-14 SE--has two wheels and an engine
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LeonidasZX14
Pro
Posts: 1277
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posted July 16, 2010 01:44 PM
The spin caps hiss too. Who cares if it hisses?
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09' ZX14
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blackbullet76
Pro
Posts: 1134
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posted July 18, 2010 10:11 PM
It's a Kawi thing
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2007 ZX-14 black
Brocks s-meg exhaust
PCIII w/track map
BMC race filter
Flies removed
16 tooth front sprocket
Speedohealer
APE cam chain tensioner
Vortex rearsets
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rocket2117
Expert Class
rocket2117
Posts: 106
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posted July 19, 2010 03:06 PM
dang it i didnt know my bike did it till this post now its driving me crazy lol
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Shane661
Needs a life
Posts: 11494
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posted July 19, 2010 03:08 PM
So, do you guys sleep next to your bikes, or what? 
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LAB3
Needs a job
Posts: 2977
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posted July 19, 2010 03:11 PM
Sometimes.........when I spend to much $$ on it. or stay to long on some of my trips
to the Ozark Mountains.... lol j/k
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scottfarm
Parking Attendant
Posts: 10
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posted July 19, 2010 05:30 PM
I stuck an air hose and blew in the vent and mine never did it again.
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Georgia14
Parking Attendant
Posts: 15
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posted July 21, 2010 11:12 AM
had a tank bag but the bag always smelled like fumes from the hissing. would be nice to vent some other way.
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2009 ZX14 with stock everything and
waiting on the warranty to run out to
upgrade.
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LAB3
Needs a job
Posts: 2977
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posted July 21, 2010 11:29 AM
quote:
I stuck an air hose and blew in the vent and mine never did it again.
I think now it will let moisture in during the winter months. Keep the gas tank FULL in
winter time now (rust). Not sure on the 14 but on my old FJ1200 it has a flapper valve that lets the pressure in the tank out (hissing) by blowing compressed air in the vent you may have damaged the one way flapper valve. I may be wrong.just sayin.
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BIGZXDADDY
Expert Class
Posts: 270
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posted July 21, 2010 01:26 PM
quote:
Has anyone really found a fix for this? Im really starting to get tired of hearing it. Seems to be a common issue on all kawis
yes, 1. remove the cap assembly from the tank and turn upside down 2. remove screws and cover (keep upside untill re-assembled) 3. remove vent pressure spring, cut 2 coils from spring, stretch spring to original length. 4. re-assemble and install
this takes about 5-10 minutes and yes the vent still seals so water won't get in the tank or gas out if you turn the bike upside down. all you have changed is the psi at which the the vent vents which gets rid of the 80's computer modem noise
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"never drive faster than you can see, besides it's all in the reflexes"
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