gravity feed gas on a 99 zx9r - Kawasaki Forum :: KawasakiWorld.com
 
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post #1 of 7 Old 03-30-2016, 10:01 PM Thread Starter
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gravity feed gas on a 99 zx9r

I found out my fuel pump was bad. i was wondering how long can you ride by bypass the pump and gravity feeding the gas
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post #2 of 7 Old 03-31-2016, 05:26 AM
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Correct me if I'm wrong.... isn't a '99 ZX9R carbureted? So it shouldn't have a fuel pump.
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post #3 of 7 Old 03-31-2016, 07:06 AM
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I've heard of one or two people bypassing the pump to get them about for a short time. Seems to work better with a full tank as there is more fuel pressure then.

Just make sure you switch the fuel tap off each time you stop, because if you have a leaking carb fuel valve then the tank could empty into a cylinder.

I'm sure you'll find a good second hand pump on ebay or craigslist.

For Tech Questions Bike Model letters are more useful than saying the year, for uk owners anyway, as registration year is not always year of manufacturer model.
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post #4 of 7 Old 04-01-2016, 05:12 AM Thread Starter
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Yes it does have a pump. And thank you for the help. I found one
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post #5 of 7 Old 04-01-2016, 05:29 AM
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Quote:
Originally Posted by antman25 View Post
Yes it does have a pump. And thank you for the help. I found one
Interesting. It must just delivers low pressure to the carbs (~5-7psi)? Glad you found one to get ya back on the road.
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post #6 of 7 Old 04-01-2016, 09:49 AM
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In the electrical section of the service manual it says:-
Standard
11 to 16 kPa
1.6 to 2.3 psi.

antman25
Take the screw out of the black end of the fuel pump and slide the black cover up the power cable. Then when you look inside you will see some contacts, these can get carboned up and stop the pump from working, if this was the case scrape them clean and the pump should start working.

For Tech Questions Bike Model letters are more useful than saying the year, for uk owners anyway, as registration year is not always year of manufacturer model.
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post #7 of 7 Old 04-01-2016, 05:02 PM Thread Starter
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That was the problem but I already ordered a new so I will just wait for it to come in. Thanks for all the help
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