CBR 600F 1987 - 1990 CBR 600F Forum

fuel delivery problem

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Old Dec 25, 2007 | 04:54 PM
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Default fuel delivery problem

i think my problem is in the wiring and i was wondering if any one could check their connector for the fuel pump with just the ignition switch on and see if both ports have power or if only the green one does. thanks
 
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Old Dec 25, 2007 | 08:38 PM
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Default RE: fuel delivery problem

i will try you haould have power to 1 and ground to 1. with the switch off probe a wire to see if it lights up when you turn the key on. find the 1 with power and check the other for ground. when you know which is hot you can run a wire from the battery to check the pump hope this helps
 
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Old Dec 25, 2007 | 10:26 PM
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Default RE: fuel delivery problem

yeah the black and blue one is hot and the green one is brown but what did you mean by running a line and seeing if the pump works? i dont quite get it wiring is not my thing. if you could explain that one more time fore me that would be appreacated. thanks
 
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Old Dec 26, 2007 | 04:35 PM
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Default RE: fuel delivery problem

check the ground with a test light to the postive battery post should light. if the ground is good make a test lead with a fuse in it and run from the postive to the postive on the fuel pump make sure the pump is grounded stright wire the fuel pump then you know if its good or not. be careful use safty glasses and a fused hot wire be safe
 
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Old Dec 26, 2007 | 07:29 PM
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Default RE: fuel delivery problem

run it positive to the positive like from the wire back to it self or from the terminal and have a fuse in it. then just straight wire it to see if it will work that will make sure for positive thanks ill post back after ive checked all of that
 
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Old Dec 26, 2007 | 07:46 PM
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Default RE: fuel delivery problem

dont forget the ground
 
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Old Dec 26, 2007 | 11:16 PM
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Default RE: fuel delivery problem

yeah i wont, thanks so i got all that right in my description of how to do things.
 
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Old Dec 27, 2007 | 06:19 PM
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Default RE: fuel delivery problem

ok i checked to see that it was a ground and the one wire was but the pump didnt work when i tried to straight wire it that means my pump is blown right but are there any more things that i should try to check before i try to plug in a new pump
 
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Old Dec 28, 2007 | 05:43 AM
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Default RE: fuel delivery problem

if you have a good ground and ran power from the battery to the pump and it didnt run the pump is bad replace the pump and you should be ready to ride. you did check all the fuses right?
 
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Old Dec 28, 2007 | 04:13 PM
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Default RE: fuel delivery problem

alright so nothing else could be causing a problem i did check all my fuses i got the pump i have from a dismantler and it just doesnt work. i had one before that just chuged but it only delivered 12oz of fuel when i rea it needed like 22oz so that was bad to i tried to start it on that and it would turnover but not stay running even with full chock does that sound right i need a new pump and do you know where i could get one
thanks
 
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