Chaharly Posted April 12, 2018 #1 Posted April 12, 2018 Hey guys! Getting my buddy into riding and we picked him up a $300 GS750L that had the tank rusted through and hadden been run or ridden in years. We got a new tank for it and with a little bit of seafoam actually have it running wonderfully! When he first got it the turn signals worked slowly, but then one day one of em flashed real bright and they haven't worked since. No flash no noise nothing. I don't know anything about those old school blinkers, but I'm sure a few of you guys have a good idea how to trouble shoot them. Where should I start? All the bulbs and fuses are good
cowpuc Posted April 12, 2018 #2 Posted April 12, 2018 Never ever was much of a blinker man myself Cha and generally still use hand signals instead of blinks but, if he were my friend I would probably tap in a test light in front of the flasher unit and check it for voltage and do the same behind the flasher.. Sounds suspiciously like a bad flasher.. On another note,,, maybe double check voltage across battery at high idle and up for over charge and also A.C. presence as a failing regulator could fry a flasher resulting in that bright flash you saw.. b
BlueSky Posted April 12, 2018 #3 Posted April 12, 2018 Sounds like he needs a manual. https://www.ebay.com/itm/Suzuki-Factory-Service-Manual-with-Binder-SR-8010-E3-suzuki-dealer-GS750L-manual/201805603245?hash=item2efc8d21ad:g:a3sAAOSwo4pYlLaa&vxp=mtr
Chaharly Posted April 12, 2018 Author #4 Posted April 12, 2018 Never ever was much of a blinker man myself Cha and generally still use hand signals instead of blinks but, if he were my friend I would probably tap in a test light in front of the flasher unit and check it for voltage and do the same behind the flasher.. Sounds suspiciously like a bad flasher.. On another note,,, maybe double check voltage across battery at high idle and up for over charge and also A.C. presence as a failing regulator could fry a flasher resulting in that bright flash you saw.. b It might also explain why the headlight and taillight were blown as well thanks puc!
Chaharly Posted April 13, 2018 Author #5 Posted April 13, 2018 Hey @cowpuc if i set the multimeter to AC volts and test the battery i shoulDNT GET ANYTHING RIGHT? its showing 12.7
snyper316 Posted April 13, 2018 #6 Posted April 13, 2018 Hey guys! Getting my buddy into riding and we picked him up a $300 GS750L that had the tank rusted through and hadden been run or ridden in years. We got a new tank for it and with a little bit of seafoam actually have it running wonderfully! When he first got it the turn signals worked slowly, but then one day one of em flashed real bright and they haven't worked since. No flash no noise nothing. I don't know anything about those old school blinkers, but I'm sure a few of you guys have a good idea how to trouble shoot them. Where should I start? All the bulbs and fuses are good Is this a new Venture or an old one with engines swapped?
Chaharly Posted April 13, 2018 Author #7 Posted April 13, 2018 Sounds like he needs a manual. https://www.ebay.com/itm/Suzuki-Factory-Service-Manual-with-Binder-SR-8010-E3-suzuki-dealer-GS750L-manual/201805603245?hash=item2efc8d21ad:g:a3sAAOSwo4pYlLaa&vxp=mtr I agree wholeheartedly, but getting him to spend money is easier said than done
Chaharly Posted April 13, 2018 Author #8 Posted April 13, 2018 Is this a new Venture or an old one with engines swapped? Suzuki Venture 1500!
cowpuc Posted April 13, 2018 #9 Posted April 13, 2018 Hey cowpuc if i set the multimeter to AC volts and test the battery i shoulDNT GET ANYTHING RIGHT? its showing 12.7 I am no guru on electrical stuff Cha but, IMHO, if you do have AC voltage up on the battery cables then yea, sounds like you found a faulty regulator/rectifier which definitely could/would cause stuff to pop.. Possibly a bad ground down on the reg/rect but not an uncommon failure of diodes/internal components.. Hopefully the ignition system is ok - some of that stuff is sensitive.. I would double check the meter by testing on another system,, say a car or another scoot.. Any system would be fine as no battery should be charging off AC voltage = make sense? If it does turn out to be a regulator - probably find a cheap used one on Ebay to test the system and make sure you dont have other huge issues like failure of major hard to find ignition parts.. I know the old Kawasaki's were extremely sensitive even to low voltage from a poor battery or bad connections = I think I still have 15 or 20 failed H1 Kaw 500 igniter boxes in my junk pile out back from those days.
BlueSky Posted April 13, 2018 #10 Posted April 13, 2018 Yep, the stator/rotor makes AC power and it is converted to DC.
RedRider Posted April 13, 2018 #11 Posted April 13, 2018 TheGSResources.com The 'go to' forum for all things GS related. Used to have one. RR
bongobobny Posted April 14, 2018 #12 Posted April 14, 2018 Which type blinker fluid did you use?? The organic stuff can break down faster, you should use the synthetic stuff, and don't overfill! Sorry, couldn't resist! In all seriousness, if you are reading an AC voltage then indeed the R/R is bad! There are devices called diodes inside them that convert AC from the stator to DC to feed the battery. With the bike turned off you won't see the AC but with the bike running you will see AC if the rectifier part of your R/R is kaput!
Chaharly Posted April 14, 2018 Author #13 Posted April 14, 2018 I think I have a junk multimeter then. When I put it on AC it still reads DC voltage
bongobobny Posted April 14, 2018 #14 Posted April 14, 2018 Well I guess there's always that possibility! You can always find a cheap voltmeter at a lot of places for $5 to $10 and confirm it, and then you have a spare one...
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