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EFI not pumpin

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Old Apr 13, 2007 | 02:44 PM
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Default EFI not pumpin

When i took my fuel injection system off for my project it was workin 100%, i finally got it now almost complete and i went to start it and no go, i took the fuel line off the EFI housing and fuel shot out bout 6 feet lol, so its pressurized and the fuel pump works, my mech said it seems like the computer is not letting the fuel into the housing, he sprayed stuff on my air filter and the motor fired, everything else works great, the motor is top notch, so we know its the fuel injection system somewhere, anyone run into this before? or have any ideas?
My mech called KMS and they said hook it up to a laptop to check all sensors, but my laptop is down and wont work, so im stuck until i get a laptop to check everything
 
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Old Apr 13, 2007 | 05:08 PM
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Default EFI not pumpin

Sounds to me like the computer is not telling the injectors to open. I would check the ohm's and resistance of the injector plugs and see if they are getting signal from the computer. Sounds like the fuel pump is working. So it has something to do with the injectors. Maybe a sensor or something.

I am sure you have pluged the injector plug into the injector, right? Sometimes they dont make good contact. You may have to wait and plug it into your laptop to find out what is going on.

Good luck
 
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Old Apr 13, 2007 | 05:13 PM
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Yea we are gessin the injectors, they are plugged in, i never took that plug off when it all apart, i left it as connected as i could when tearing the baja down months ago so not to mess it up... now look where that got me lol
Im gonna get my girls laptop and run that EFI software, it has all the sensors on there to check them, hopefully the laptop plug in will fix it
 
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Old Apr 13, 2007 | 06:00 PM
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The injectors need more juice than the rest of the bike. I believe that had to be at 11.5 plus to open. Is you battery fully charged? When I had mine it would turn over normally but the injectors wouldn't fire if the volts weren't up there. I had to replace my battery due to this issue.
 
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Old Apr 13, 2007 | 06:28 PM
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Once you run the software let us know what you get as a response...The diagnostics could be anything really, but I would start with a fully charged battery and see where that gets you...Are all sensors connected tightly and have a clean connection...Are all wires connected tightly and everything hooked up in the correct order?...When you get the computer hooked up it should give you diagnostics on what is wrong and it should be an easy fix.
 
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Old Apr 14, 2007 | 04:26 PM
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Well i dont have a laptop with a 9 pin plug so i bought an adaptor for a 9 pin to a USB, hooked it up via the instructions from KMS and i got no readings. I called and she said the adaptor might not be reading it and i should get a laptop to directly plug into, but i told her my situation and she thinks my injectors could be clogged from sittin for 6 months, now does anyone know how to get to those?
 
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Old Apr 15, 2007 | 03:35 AM
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Take the injector and just pull it out...I would see if you are getting enough pressure to even push fuel through the injector and make sure that all sensors are giving feedback and are hooked up correctly...If you don't have the sensors hooked up the efi will not be working and make sure nothing is shorting out...Also how strong is your battery and can you pop start or check the voltage with an multimeter.
 
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Old Apr 15, 2007 | 10:48 AM
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yea im going to buy a new battery today, my battery is ok but it is old and has been sittin for months during this project so im gonna replace it.
now where on the housing are the injectors at? i dont wanna be tearing this apart lol
 
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Old Apr 15, 2007 | 02:52 PM
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The injector is the thing that has a plug connected into it.
Take a look at picture #9 and do you see the purple and pink wires well right there is the injector.

http://forums.atvconnection.com/Photos.cfm?ID=1861
 
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Old Apr 15, 2007 | 05:49 PM
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OK good i got the right spot lol, and my g/f luckily found her laptop and it has the 9 pin, so im gonna try to plug it in again and see where i get, also gonna return that USB adaptor, POS radio shack equipment lol
 
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