S
SHEM
Guest
thank you very much
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OK so you have the petcock with a lever, that's good.
It also looks like someone has had it apart a few times based on looking at the screws. (get yourself a good set of Vessel JIS Screw Drivers, you'll never regret it.)
It could also be a stuck needle jet causing the carb to flow fuel into the crank case.
Performing a proper cleaning on a set of carbs is a big job the first few times, but actually is quite doable with a few basic tools and following the guide.
A year ago I would have never considered rebuilding carbs, but now I've done it 3-4 times and it's actually pretty easy with the right tools.
http://www.mtsac.edu/~cliff/storage/gs/Mikuni_BS-CV_Carburetor_Rebuild_Tutorial.pdf
http://thegsresources.com/gs_carbrebuild.htm
And the mother of all info pages.
http://members.dslextreme.com/users/bikecliff/
S
SHEM
Guest
gas in crankcase
gas in crankcase
Thanks. I moved to the drivetrain 4cyl. forum. I wasn't sure if that was more appropriate
gas in crankcase
Thanks. I moved to the drivetrain 4cyl. forum. I wasn't sure if that was more appropriate
Simple temp fix
Pull the vacuum line and cap the port on the carb where the line goes - you can get a cap at the auto parts store
Change the oil
When you ride the bike, turn the petcock to Prime. When you get there, turn it to run
Don't forget to turn it to Run when you get off the bike
Pull the vacuum line and cap the port on the carb where the line goes - you can get a cap at the auto parts store
Change the oil
When you ride the bike, turn the petcock to Prime. When you get there, turn it to run
Don't forget to turn it to Run when you get off the bike
Or just stick a 6 MM bolt in the hose right under the tank,,,no fishing around then to try and cap it at the carbs. And he means ON not run.
S
SHEM
Guest
this sounds good
this sounds good
Please can you give more detailed steps as Ive never done this kind of fix
this sounds good
Please can you give more detailed steps as Ive never done this kind of fix
S
SHEM
Guest
I don't understand why I would turn the petcock to prime while riding. Also, What does capping the line actually do in this scenario?
Capping the vacuum line plugs the line and prevents fuel from dribbling/pouring down it! But this means you have to now put petcock in "PR" spot or no fuel will flow. BUT when you shut off bike, move lever back to "ON" to block fuel from flowing.
S
SHEM
Guest
Newbie blues
Newbie blues
I'm sorry but I still don't understand why I need to do anything with the fuel line
Newbie blues
I'm sorry but I still don't understand why I need to do anything with the fuel line
S
SHEM
Guest
Now I'm really confused. My original problem is that my petcock got stuck on in the on position and flooded the crankcase with gas. I know I need a new one but I have to quick fix it to get to my dads to help. I still don't get the line plugging.
You need to ride it? You did change the oil, right? Just put it on ON and go. When you shut off the engine, the petcock probably won't shut off the fuel again, so disconnect and plug the fuel line from the petcock to the carburetors so it doesn't flood the crankcase with fuel again.
One way to find where oil is coming from is to clean the bike, then look and see where it is coming out from when it is running.
Your petcock does not have an off position. The hose Todd told you to plug is a vacuum line that is supposed to open the valve when the engine is running and close it automatically when the motor is not running. If you have fuel in your oil, then you definitely have a petcock problem 100% for certain. The fuel can get in in one of two ways through the petcock. One is through the vacuum line Todd told you to cap. The other is from the main fuel line because it doesn't turn off on its own as it is supposed to. You can figure out which way it failed, but if you have fuel in the crank case it came through the petcock in a way that it was not supposed to.
There are lots of ways that oil can leak. Someone with eyes, possibly even you, needs to look and see where it is coming from. A big leak like that should be easy to find, and more than likely, easy to fix. Tools will be needed, as will parts.
At this web site:
http://members.dslextreme.com/users/bikecliff/ You will find a GS850G factory manual. That matches your bike pretty well. Bore size and a few internal parts are different. Every parts place on line has microfsche you can look at to see how things go together and come apart. Often that is better than the manual. I usually go to Partshark.com , but they all work.
That is a very good motorcycle. Super comfortable, super durable, and very useful. I recommend that you run some tests on your charging system. If it works at all, it doesn't work as well as it should. You can fix that.
Your petcock does not have an off position. The hose Todd told you to plug is a vacuum line that is supposed to open the valve when the engine is running and close it automatically when the motor is not running. If you have fuel in your oil, then you definitely have a petcock problem 100% for certain. The fuel can get in in one of two ways through the petcock. One is through the vacuum line Todd told you to cap. The other is from the main fuel line because it doesn't turn off on its own as it is supposed to. You can figure out which way it failed, but if you have fuel in the crank case it came through the petcock in a way that it was not supposed to.
There are lots of ways that oil can leak. Someone with eyes, possibly even you, needs to look and see where it is coming from. A big leak like that should be easy to find, and more than likely, easy to fix. Tools will be needed, as will parts.
At this web site:
http://members.dslextreme.com/users/bikecliff/ You will find a GS850G factory manual. That matches your bike pretty well. Bore size and a few internal parts are different. Every parts place on line has microfsche you can look at to see how things go together and come apart. Often that is better than the manual. I usually go to Partshark.com , but they all work.
That is a very good motorcycle. Super comfortable, super durable, and very useful. I recommend that you run some tests on your charging system. If it works at all, it doesn't work as well as it should. You can fix that.
Last edited:
eil
Forum Sage
Hi SHEM,
The previous owner of this bike might have told you that these 8-valve Suzuki GSes are extremely reliable and pretty great all around. What he or she probably neglected to mention is that they require a fair amount of care and feeding in order to be both reliable and great. The only way you're going to be happy with this bike is if you are able to get it caught up on all of its regular maintenance and then methodically troubleshoot and patiently fix the remaining issues. If you are unwilling or unable to do these things, then a vintage motorcycle is probably not for you.
Since the typical OEM parts order takes around two weeks, getting a new-to-you bike road-worthy usually takes quite a bit more than a few days. You may want to think about postponing that road trip.
If this bike is a keeper in your eyes, then it's time to dig in your heels and learn a thing or two. Have you seen the mega-welcome yet? http://www.thegsresources.com/_forum/forumdisplay.php?f=101 This is your starting point to everything you need to know about maintaining your trusty steed. There's lots to read and do. Spend some quality time with the service manual so that you understand how the various systems on the bike work. If you don't have a place to work, you're going to want to find one eventually as not all maintenance tasks are easily handled in a parking lot.
That's a great-looking 1000G, by the way. It'll really look good if you can find a stock seat and tail piece.
The previous owner of this bike might have told you that these 8-valve Suzuki GSes are extremely reliable and pretty great all around. What he or she probably neglected to mention is that they require a fair amount of care and feeding in order to be both reliable and great. The only way you're going to be happy with this bike is if you are able to get it caught up on all of its regular maintenance and then methodically troubleshoot and patiently fix the remaining issues. If you are unwilling or unable to do these things, then a vintage motorcycle is probably not for you.
Since the typical OEM parts order takes around two weeks, getting a new-to-you bike road-worthy usually takes quite a bit more than a few days. You may want to think about postponing that road trip.
If this bike is a keeper in your eyes, then it's time to dig in your heels and learn a thing or two. Have you seen the mega-welcome yet? http://www.thegsresources.com/_forum/forumdisplay.php?f=101 This is your starting point to everything you need to know about maintaining your trusty steed. There's lots to read and do. Spend some quality time with the service manual so that you understand how the various systems on the bike work. If you don't have a place to work, you're going to want to find one eventually as not all maintenance tasks are easily handled in a parking lot.
That's a great-looking 1000G, by the way. It'll really look good if you can find a stock seat and tail piece.
S
SHEM
Guest
went ahead
went ahead
I took the bike on the trip and It ran GREAT! All I did was replace the oil and it never leaked gas in again. I think that the reason it did get gas in the oil was because I filled the tank after a hot day of stop and go. I will only fill up when cool now.
went ahead
I took the bike on the trip and It ran GREAT! All I did was replace the oil and it never leaked gas in again. I think that the reason it did get gas in the oil was because I filled the tank after a hot day of stop and go. I will only fill up when cool now.
Didnt leak any more oil? Great!
You should still check the petcock out. It will happen again.
S
SHEM
Guest
:dancing:I don't know why but yeah, no oil leaks anymore. I will still change the petcock though. Better safe than sorry.
G
Guest
Guest
You have hot days there? Filling up on a hot day shouldn't matter, if it did, I wouldn't be able to fill up here where I live. I think you had some kind build up on the petcock plunger to where it wouldn't shut down the fuel flow and after a couple tanks of fresh fuel it finally kind of cleaned its self off. Might wanna run some seafoam through your fuel system. Also use an ethanol fuel treatment to prevent it happening again. All that said, I would believe I would still change out the petcock like you said.
W
WShie
Guest
Change the petcock. It WILL leak again. Bite the bullet and get a new Suzuki one and be done with it, no more problems. Cheaper than blowing your motor.