Question about 1989 Suzuki GSX-R 750 K

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Somthing draining my battery

Hey gota k3 750 and i thought i had a bad battery but dont think thats the issue. bought a new battery august 3 and had to get in charged within 3 weeks. then the other day it was dead again so i thought maybe bad battery. so went and got it exchanged and it was kool for the day. then yesterday(sunday) my bike was dead again. what could be draining my battery? voltage regulator or what? the connections are good i keep chekin them so thats not it. thinkin maybe the regulator is messin up. any help would be appreciated so i can try and fix it myself before i take it to the shop

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  • Anonymous Mar 21, 2014

    new battery went dead after two weeks. something is draining the charge

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  • 2,336 Answers

Check the stator

Posted on Nov 10, 2008

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Voltage leak


and now the new one is dead too. It charges 13.5 volts which i think is ok but I did a battery leakage test with the ignition off negative cable off the battery and multimeter (set on volts) between the negative terminal and cable and it seems to be leaking though the circuit that has the 3 amp fuse. I can't find a wiring diagram anywhere to tell me what this circuit supports. Can anybody tell me what fuses power what so i can find the culprit stealing my electricity?,Voltage won't tell you anything about a battery being drained. Two things to check. 1. insert an ammeter between the negative battery post and the ground wire(s). With ignition off, you should read zero (or single milli-amps). That will tell you if you have some sort of parasitic drain. if it is 100's of milli-amps, then you have a parasitic loss. If that is the case, then you need to start opening circuits to try and find the circuit which is causing the loss. once you open the circuit and the drain drops, you've found the bad loop. now you just have to find the issue with that loop. 2. if you read zero or single milliamps, then you probably aren't charging. you should also use an ammeter to see if you're putting current back into the battery. If you are, then you need to see that you have a voltage rise at the battery terminal when the bike is running (probably over 3K rpm). You have to look at both voltage and current to get a good handle on the charging system. ,,,

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Voltage leak


and now the new one is dead too. It charges 13.5 volts which i think is ok but I did a battery leakage test with the ignition off negative cable off the battery and multimeter (set on volts) between the negative terminal and cable and it seems to be leaking though the circuit that has the 3 amp fuse. I can't find a wiring diagram anywhere to tell me what this circuit supports. Can anybody tell me what fuses power what so i can find the culprit stealing my electricity?,Voltage won't tell you anything about a battery being drained. Two things to check. 1. insert an ammeter between the negative battery post and the ground wire(s). With ignition off, you should read zero (or single milli-amps). That will tell you if you have some sort of parasitic drain. if it is 100's of milli-amps, then you have a parasitic loss. If that is the case, then you need to start opening circuits to try and find the circuit which is causing the loss. once you open the circuit and the drain drops, you've found the bad loop. now you just have to find the issue with that loop. 2. if you read zero or single milliamps, then you probably aren't charging. you should also use an ammeter to see if you're putting current back into the battery. If you are, then you need to see that you have a voltage rise at the battery terminal when the bike is running (probably over 3K rpm). You have to look at both voltage and current to get a good handle on the charging system. ,,,

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replaced with a new one. i hit the start button motor will barely turn over. i am lost. its doing the same thing as the old battery which was new last year. sure culd use some input. almost forgot also tried to jump alsojust dose not have enough balls to roll the moter overit tries but no go.what does it sound like when it is turning over? like the starter motor is really straining, or like the starter motor is really slow and lifeless? is the head light bright or dim? could be the engine is siezing up, but I doubt it. if you try to pop-start it (get it rolling on the street in high gear w/ the clutch in, then hop on and release the clutch), does the engine turn over? I'm willing to bet it's somthing simple, like one of the battery leads or leads to the starter is loose or damaged and not enough current is getting through.,,,

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Starting issues


replaced with a new one. i hit the start button motor will barely turn over. i am lost. its doing the same thing as the old battery which was new last year. sure culd use some input. almost forgot also tried to jump alsojust dose not have enough balls to roll the moter overit tries but no go.what does it sound like when it is turning over? like the starter motor is really straining, or like the starter motor is really slow and lifeless? is the head light bright or dim? could be the engine is siezing up, but I doubt it. if you try to pop-start it (get it rolling on the street in high gear w/ the clutch in, then hop on and release the clutch), does the engine turn over? I'm willing to bet it's somthing simple, like one of the battery leads or leads to the starter is loose or damaged and not enough current is getting through.,,,

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