1999 EX500 carb leakage - ZX Forums
 
LinkBack Thread Tools
post #1 of 4 (permalink) Old 02-15-2014, 04:21 PM Thread Starter
Newbie
 
Joined: Dec 2010
From: nova scotia

Posts: 4
1999 EX500 carb leakage

Hello, I've got a 1999 ninja 500. when i bought it the guy said the carbs were leaking. so i hooked them up and saw where they were and took action from there. I've replaced the main jets, and slow speed jets, new gasket for the float bowl. new needle valves, new oring/washer/spring and pilot screw and reset it to 2 turns out as that's what the manual said lol. put it all back together and still leaking. it's really hard to see where exactly its leaking from. i can see gas dripping off the pilot screw area, bottom of the carb itself, and the black adjusting nut in the middle of the two carbs (possibly the synchronize screw?) when i took the carbs off i never separated them and looked into the cross over tubes. so i'm left with 3 things. one, it's the over flow (no tube on it at this moment)...two. the cross over tubes are leaking. or three, the vacuum operated fuel diaphragm on the petcock isn't working right. hoping someone out there will have a little more insight and been down this road once or twice lol
tricountykustomz is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 02-18-2014, 10:39 PM
Senior Member
 
quisp's Avatar
 
Joined: Apr 2012
From: florida

Posts: 847
I assume the drain screws on the float bowls are closed? There should be o- rings at the carb end of that t- connector.
quisp is offline  
post #3 of 4 (permalink) Old 02-18-2014, 10:59 PM
Senior Member
 
e1_ZX-9r's Avatar
 
Joined: Sep 2008
From: Blackfoot, ID (~5,000' AMSL)
I Ride: 00 ZX-9r Lime Green 02 ZX-9r Lime Green, California E1 & F1 models, respectively

Posts: 9,979
Others use baking powder on components they want to trace leaks from. Leaks leave distinct wet runs, while leaving the remaining areas dry and untouched. Identify, rinse, repair and repeat if necessary.

Alright! Trading bikes for a while was fun.I'm ready for mine back. No, seriously, get off my bike. Ahh, what a privilege it is to have such a sweet ride.
At the track she's said to be outclassed, but on the street, she reigns unmatched. She's the only big-bore canyon carving hypermiler I know of. -- Picture gallery, K&N air filter, SuperTrapp Aluminum Racing Series exhaust (Made in USA), ZG touring shield, & otherwise stock.
Science & OODA literate. ACA covered.
e1_ZX-9r is offline  
 
post #4 of 4 (permalink) Old 02-25-2014, 07:29 PM
Quinton Phuckin Tarantino
 
iron8's Avatar
 
Joined: Nov 2010
From: Surprise , AZ
I Ride: 08 zx14, 96 cbr 900rr

Posts: 18,914
Garage
Quote:
Originally Posted by tricountykustomz View Post
Hello, I've got a 1999 ninja 500. when i bought it the guy said the carbs were leaking. so i hooked them up and saw where they were and took action from there. I've replaced the main jets, and slow speed jets, new gasket for the float bowl. new needle valves, new oring/washer/spring and pilot screw and reset it to 2 turns out as that's what the manual said lol. put it all back together and still leaking. it's really hard to see where exactly its leaking from. i can see gas dripping off the pilot screw area, bottom of the carb itself, and the black adjusting nut in the middle of the two carbs (possibly the synchronize screw?) when i took the carbs off i never separated them and looked into the cross over tubes. so i'm left with 3 things. one, it's the over flow (no tube on it at this moment)...two. the cross over tubes are leaking. or three, the vacuum operated fuel diaphragm on the petcock isn't working right. hoping someone out there will have a little more insight and been down this road once or twice lol
What I do when I have a problem like this is hook a remote fuel reservoir and test the carbs on a bench but an old gas tank will work. From your description it's probably your crossover tube that leaks, if they sit on one place for years then you turn them or put pressure on them they can easily leak.

Sir 14 Thrashin, Sometimes Peg Scrapin, Electrocutin Greasmonkey Whore of ZXF
iron8 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the ZX Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome