battery drains on start

[tattosti]

Hi Guys, new owner of a Gs650G 1983 here, I have a problem with the battery, in the first start the battery drains, so if I didn't manage to start the bike on the first attempt the battery is dead, I already change the battery for a new one, and already check that is charging. I have now idea what to check now, I will appreciate any suggestions. Thank you all in advance.

[Big T]

Well, your 650 should start in less than a second, so you may have a number of problems.

You say you checked your battery, what were the numbers?

[Rich82GS750TZ]

Do the quick test and post the numbers. How did you determine that the battery is being charged? Quick test and other useful links for you are in my signature.

[tom203]

New to you?? .....understand how the “choke” system works ....it’s actually an enricher device.. it’s supplies an extra dose of fuel into carbs throats. But you must not apply any throttle when you use “choke” during cranking or you defeat this cold start method and bike will just crank away! So apply full “choke”, no throttle twisting,and then crank.

[Gorminrider]

Hi Guys, new owner of a Gs650G 1983 here, I have a problem with the battery, in the first start the battery drains, so if I didn't manage to start the bike on the first attempt the battery is dead, I already change the battery for a new one, and already check that is charging. I have now idea what to check now, I will appreciate any suggestions. Thank you all in advance.

I would look very closely at the starter motor. Take it out, inspect and clean it or repair it.

Do Test it on the bench while it's out of the bike to be sure you have fixed.

It's the only thing I can think of that would drain a good battery so quickly unless your Positive battery cable is intermittentently shorting to the frame. Because, there is no fuse between the starter motor and the battery. Any other electrical fault would blow a fuse before the battery was killed.

[tattosti]

Thank you guys for all the suggestions, I will try everything and let you now the results on the next days

[rphillips]

Just wondering how long it cranks until the batt. goes down?

[Gorminrider]

in the first start the battery drains, so if I didn't manage to start the bike on the first attempt the battery is dead,

Rphillips, I'm assuming it dies almost immediately from original post, but yes-"how long is it cranking?" is a question. It might be turning steadily for minutes for all I know!

[rphillips]

Yep, just wondering. 5 seconds of cranking should easily have it going, but if the batt. is dead after only 5 seconds??? Something ain't right.

[tattosti]

Hi Guys I have some progress, so I found some ground connections lose, after changing the tipa y reconnect everything I don’t have the problem any more, so the bike try’s to start and don’t “kill” the battery trying 😄, but now the bikes try’s very hard to start even with the choke press on full, now it’s a totally different problem but you have any ideas ??
thanks all for your help and interest in my problem, very happy to found this great forum!

[tom203]

Your “choke” system probably is clogged....not delivering extra shot of fuel into carb throats. If you drop a fuel bowl ,you will see a small tube that protrudes out of carb body....this tube gets fed by a small hole in bottom of fuel bowl. Both the tube and the hole are easily clogged preventing the “choke” system from allowing fuel to reach carb throats.

[Big T]

http://members.dslextreme.com/users/bikecliff/

Go to that site and get yourself a factory service manual.
Then, look at the right column for the BS carb rebuilds and follow them

[fastbysuzuki]

All that and look here. https://www.thegsresources.com/_foru...ewbie+mistakes

[carpetbagger]

Now you are back to it could be any number of problems. Adjust the valves, overhaul the carbs and replace all the O rings first. If there is still a problem, it will be a lot easier to track down.

[tattosti]

Thank you all once again, will check the service manual, and the "Top 10 Newbie Mistakes" its a great way to start.
I will keep you updated with the results, thanks to all!