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Old October 10th, 2019, 05:21 PM   #16
RiderDonnie
ninjette.org member
 
Name: Donnie
Location: Missouri
Join Date: Sep 2019

Motorcycle(s): 2005 Kawasaki Ninja 250r

Posts: 38
Quote:
Originally Posted by DannoXYZ View Post
Search for "petcock hoses"

Big hose goes between big fuel-port on petcock and side fuel-rail inlet on carb.

Small hose goes on to small vacuum-port on back side of petcock to brass vacuum-nipple on carb.

While you're there, test petcock:

1. attach small hose to vacuum-port on back of petcock
2. attach big fuel-hose to petcock and aim free-end into measuring cup
3. apply vacuum or carefully suck on small vacuum-hose
4. does petrol flow from petcock into measuring cup?
5. let petrol flow for 30-seconds
6. how much did you collect in measuring cup?

Common issue is vacuum line between carbs and petcock leaks due to cracks or loose hose-clamps on ends. TIP: unbolt back of tank, lift it up and hold it up with prop-rod (wooden stick). This lets you get at back of petcock easily to attach vacuum-hose. Or when disconnecting, leave hose-ends attached to petcock and disconnect from carbs.

What do you mean by number 3? Where is the small vacuum hose located.
2. I attached the big fuel hose to the petcock which is connected to the gas tank, correct? And then do Is take the end that’s connected to the carb off and point and aim that free end into cup and measure? <4,5,6>
1. Still kind of confused on this one, I’m sure it’s in the right spot, it’s the smaller one. I will link pictures here soon. It’s a super tight fit and just looks odd maybe you can help me. Thank you again, so much!!
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