Help diagnose charging issue! SO FRUSTRATED!

N

Ncstatecamp

Been Around the Block
I have an 08 hyosung gv250.

My issue is this, bike will start with a full battery, it will start 4-5 times before the battery is too drained to start it again. The bike runs fine once started, but after those start ups and the battery has been used up the starter will no longer turn over, though I can push start it.

I have had the battery load tested at O'reilly auto parts, tested the regulator rectifier using a diode test, I get a reading in 1 direction but not the other like im supposed to. My 3 yellow stator readings were 58ish volts at 5000 rpm. Every test I can image it passes. I have used this diagram and every step passes http://www.electrosport.com/media/pdf/fault-finding-diagram.pdf. My RR has 3 yellow, red, black.

I dont know what to do, anybody got any ideas?
 
What voltage are you getting at the battery when the bike is running? That's the important bit. If you don't get any increase from the standing voltage, and all the components test OK then it's possibly a bad earth.


BTW - are you trying to start / stop the bike without letting it run to re-charge the battery (IE: the 4-5 times bit)? If so, that's kinda normal - the starter will take a lot of amps to start the bike and continued use without the bike running will quickly drain the battery.
 
Running = 18.4vdc Specs= 12 - 16
Rectifier\regulator = 52 ohm Specs 7-8
Generator 52 - 70vac Specs 72-92vac
Generator 8.4k Ohms Specs 7k - 9k ohms


per this thread

http://burgmanusa.com/forums/16-all-others/40250-help-hyosung-gv250-electrical-issues.html

seems your stator may be weak did you do a ground short test on the stator windings?
 
you may want to ask about it here there are a lot of hyosung owners and info

http://www.alternativecruisers.com/index.php?PHPSESSID=3f0e1967fc304ad658368a107afbe588&action=tpmod;dl=item29
 
If you are getting 18V DC at the battery, your voltage regulator is fried. The question then is why is it fried.

But for whatever reason, you need a regulator. 18V DC at the battery is going to fry the battery too. Boil all the electrolyte out of it.

It is possible your battery is not up to par because of this....
 
Help diagnose charging issue! SO FRUSTRATED!

hillsy said:
What voltage are you getting at the battery when the bike is running? That's the important bit. If you don't get any increase from the standing voltage, and all the components test OK then it's possibly a bad earth.


BTW - are you trying to start / stop the bike without letting it run to re-charge the battery (IE: the 4-5 times bit)? If so, that's kinda normal - the starter will take a lot of amps to start the bike and continued use without the bike running will quickly drain the battery.
Click to expand...

I get it started 4-5 times after riding. The voltage running isn't all that high and doesn't climb when throttled. Where can I check for the bad grounding?
 
hillsy said:
The 18v reading is not from the OP's bike - it's from another thread.
Click to expand...

I get confused easily...LOL....Missed the change in poster.....

For CXman- you haqve the problem...

For the OP, what are the actual readings?
 
Help diagnose charging issue! SO FRUSTRATED!

Completely off batt. 12.95v
Idle 12.85v
4500 rpm 13.08v
Idle after reving 13.81 (this is new....)
Battery after being turned off - started at 13.35 and slowly falling....
(Stopped falling at 12.8) nvm stopped at 12.68v
 
12.6 volts is fully charged battery. that the voltage is climbing indicates the charging system is working.


Maybe you arer not keeping the engine RPM's up enough in your rides to keep the battery charged. If I let my CB360 run below 3000 RPM, it doesn't charge and eventually the battery gets too weak to start it.

These little engines need revs to work. They are not like a car, and usually won't charge at an idle.

If you are stop and go and low rpm, that would explain your issues.

Try running around with no less than 3000 RPM, see if that makes a difference. Won;t hurt anything, and may give some insight.
 
Help diagnose charging issue! SO FRUSTRATED!

mydlyfkryzis said:
12.6 volts is fully charged battery. that the voltage is climbing indicates the charging system is working.


Maybe you arer not keeping the engine RPM's up enough in your rides to keep the battery charged. If I let my CB360 run below 3000 RPM, it doesn't charge and eventually the battery gets too weak to start it.

These little engines need revs to work. They are not like a car, and usually won't charge at an idle.

If you are stop and go and low rpm, that would explain your issues.

Try running around with no less than 3000 RPM, see if that makes a difference. Won;t hurt anything, and may give some insight.
Click to expand...

I'll give it a try and see what happens, maybe something knocked into place.... Shouldnt the volts be up to the 13.5-14v while above 3k?
 
When the battery is fully charged, it will climb. Right after an electric start, it will be dragged down by the need of the battery.

Takes mine 20 minute of 4-5K RPM before I start actually hitting the voltage regulator and getting full volts.

If you charge the battery, and if you can bump or kick start it, then the voltage should be a little higher.

If it doesn't come up, then you may have a stator or regulator issue..
 
have you gone over and simply cleaned and put some dielectric grease on all the connectors to make sure they are making

good contact key switch stator regulator ect? battery connections and grounds?

nothing should "knock into place" it should already be there and stable
 
Help diagnose charging issue! SO FRUSTRATED!

Well seems to be acting up less, but that's only 2 starts. Voltage at work (20 minute ride at 50 mph, 5-6k rpm range) was 12.61, same after I got home just now. I'll thoroughly clean and grease my connections tomorrow. Could be as simple as a connection vibrated loose and me fiddling with it put it back in place, this bike vibrates a lot of shit out (killed an engine that way....)

Will keep updated...
 
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