Clinician
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Post by shambles on Jul 4, 2012 13:36:13 GMT -6
150Cc BMS Pathfinder
Electric starter struggles to turn over engine. Kick starts right away. Had battery load tested and it was find. Checked the relay, it works. Removed the starter and tested it and it spun freely. But when it is attacted to the scooter, it does not turn or turns a little. I jumped my car battery to the scooter and it was able to turn the starter and start the scooter. I have a battery tender and it states the battery is fully charged. I even checked it with my voltage meter.
Is it possible that my battery is not good even though it passed a load test?
Do I have a bad starter or Stator?
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Doc's Anything Goes
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Say no to scooter abuse
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Post by jct842 on Jul 4, 2012 13:52:42 GMT -6
All I can tell you is on a used 50cc gy6 I just bought for a gift the battery checked good but just barely can turn it over. the battery out of another scooter was swapped and now it starts fine. I ordered a new battery. those little batteries just don't test right at least on walmarts testers. john
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Scooter Doc
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Post by sprocket on Jul 4, 2012 14:51:00 GMT -6
Hope the car wasn't running when you jumped the scooter battery... if it was running you have likely fried the regulator...
On the battery issue test the voltage on the thin red wire on the positive battery terminal...you should have 13.5++ volts DC. It is the wire with the fuse inline
Also check the green ground wire from the engine to the frame..clean the point where it attaches to the frame very well, attach the wires again and cover the area with silicone to prevent corrosion.
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Clinician
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Post by shambles on Jul 4, 2012 20:04:32 GMT -6
Scooter is 1 year old with 320 miles on it. I did not jump it with the car running... no need. Car battery has more than enough juice to turn over a scooter.
Maybe I will just buy a new battery, but I believe it is fine.
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Post by Alleyoop on Jul 4, 2012 21:30:40 GMT -6
Well they can test good with a meter, But it may not take a LOAD, I say you have a bad battery.
Alleyoop
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Post by Bashan on Jul 5, 2012 3:43:51 GMT -6
All of the above is accurate. Also, before a starter is about to burn up they'll start drawing a lot of current but won't have much cranking power. You might need a new starter. There's ohms tests but they're not very accurate. If it was me I'd get a new starter if the battery and grounds are good....they're not that expensive. Rich
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Doc's Anything Goes
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Post by tvnacman on Jul 5, 2012 8:44:26 GMT -6
Do you have a clock on that scooter?
John
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Clinician
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Post by shambles on Jul 5, 2012 18:59:24 GMT -6
no clock. I guess I will buy a new battery.
Thanks all for the advise.
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Scooter Doc
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2008 Roketa MC-74-150cc & 82' Honda CM 250 Custom
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Post by bcgreatness on Jul 6, 2012 2:09:08 GMT -6
try making a new ground, that spruiced up a few of my low power issues. i put the extra ground on the valve cover. run 1 wire from negative on battery to the valve cover, and second, see the ground on the fan cover? tap into that and run a wire from there to your valve cover and tighten the bolt down, try the voltage test again. also not a great idea to jump ur scoot from cars even if they are off  if anything, disconnect your battery, and hook the jumper cables to the battery and let it sit for a few mins, that usually charges them up enough to turn over. in addition, i own a roketa 150cc, and the stock oem battery calls for a 6 pound battery. i upgraded mine to a 9 because that was the largest one i could stuff into the battery box. hooked up my trickle charger and have not had any starting issues since. if you get new battery go for the 9er. happy scootin'! |
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Scooter Doc
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Post by sprocket on Jul 8, 2012 9:52:31 GMT -6
I would replace the starter first..it is a crap shoot..starter or battery...
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Doc's Anything Goes
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Post by tvnacman on Jul 8, 2012 15:10:00 GMT -6
I have a spare starter .
John
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Clinician
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Post by shambles on Jul 14, 2012 20:21:46 GMT -6
I replaced the battery and it starts with no problem.
Thanks all.
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Post by Alleyoop on Jul 14, 2012 20:46:28 GMT -6
Yep, the batteries can test good but will not take a load. If you have a meter on the scoot you would see the volt meter drop like a rock as soon as you pushed the start button.
Alleyoop
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..BAD TO THE BONE..
if anything, disconnect your battery, and hook the jumper cables to the battery and let it sit for a few mins, that usually charges them up enough to turn over. in addition, i own a roketa 150cc, and the stock oem battery calls for a 6 pound battery. i upgraded mine to a 9 because that was the largest one i could stuff into the battery box. hooked up my trickle charger and have not had any starting issues since. if you get new battery go for the 9er. happy scootin'!