hello, Ok, like you probally seen my post before. I Had took my motor out and painted my frame and stuff, and done little work to the bike. Put the motor back in and Very Little Power. When i give it to the bike she just kinda bogs... I got my coil's tested and they said the one on the throttle side was gone. Bought a new one. 165.00 canadian. wow, didn't bother me cause they said it was the problem. Put it on still the same thing. heres the information i got, took the plugs out, brand new plugs. The plug on the throttle side is BLACK, Plug on Clutch Side WHITE.. Tryed for fire, and on the throttle side, and when lots of fire at idle, when i step the bike up pretty much no fire at all, maybe this is normal. Anyways guys, could you guys please help, I wanna get out riding. and planning on going for a ride with a few guys. I also cleaned the carbs up.
thanks
hope you guys can help.
Sync your carbs? Lean on left, rich on right. Sync your carbs. Just a guess. I'm not a carb guru. My specialty is knives.
how do i sync my carbs lol, whats that mean. I am good with working on bikes but never heard that before. help please.
RTFM! :flipoff:
just kidding. Buy a manual if you are going to do any kind of work on a bike, much less remove and reinstall the motor!
a carb sync or syncronization is adjusting the screw throttle pully between the carbs that control carb butterflies. Basically you are getting both carbs to idle the same. So that both cylinders will have the same combustion mix.
May not be the right fix, but it will eliminate a possible cause, and doesn't cost anything.
If you had the manual you would know this. :icon_lol:
[3
kk guys, well i bought the bike off a friend of mine, he never had a manual. And this is the first problem i had with the bike, Like i said, i'm pretty good with them, had 4 or 5 dirtbikes, and done all my own work. anyways can ya tell me how to no if the carbs are both working together right? what should i do to no?
one other thing, when i put the bike up on the centerstand and give it alot of gas, seems perfect, Just when the weight is on the tire, that's what it seems like anyways? seems perject on the stand.
check your ground wires
scrape the paint off the frame where a black wire attaches
scrape the paint off where the coils attach to the frame
since you painted it....
Quote from: Wrecent_Wryder on March 30, 2006, 04:39:44 PM
Quote from: JamesG on March 30, 2006, 04:32:29 PM
a carb sync or syncronization is adjusting the screw throttle pully between the carbs that control carb butterflies. Basically you are getting both carbs to idle the same. So that both cylinders will have the same combustion mix.
Is this different for the later models with dual throttle cables? I'm assuming it must be- there are independent cable adjustments. Haven't taken the tank off yet to really look.
There is only one sychronizing screw for the two butterfly shafts. The screw does not adjust either of the throttle cables; the throttle cables have their own adjusters for slack.
Ok, I was thinking, trying to get this figured out, umm i scraped the paint for my coils. but there is a black wire that goes to the back of the engine almost on the bottom. it's a black wire, and a painted that part when i painted my engine?? Would this do it??? something else, i thought off. I took the left lower side case off, the one that covers the clutch and gears. on the other side of the bike, on the lower side, i remember the little round plate, and took off the Magnets, and a ground there. could someone show me a picture of this, so i could make there that's right. thanks
Wasn't there a problem, where the little ground wire to the battery breaks/comes loose, then you only get one coil firing?
[6
Quote from: Wrecent_Wryder on March 30, 2006, 08:27:49 PM
Quote from: scratch on March 30, 2006, 05:46:57 PM
There is only one sychronizing screw for the two butterfly shafts. The screw does not adjust either of the throttle cables; the throttle cables have their own adjusters for slack.
Ok... so what's the advantage of two cables?
More direct throttle control, since the problem of the spring in the carb not being able to pull back a stuck cable is eliminated.
Jeffery: grounding of the engine should not be your problem since one of the plugs works fine.
ya i dunno, i'm done, until you guys tell me something, both of my plugs are wiring at idle. but when i step the bike up, they stop??? is this what's suspose to happen. Like i said, i painted my engine while i had the bike out, could the ground on the back of the engine be bad??? would this do it? hopefully i can get this straightened out today.
couple of questions...
did the bike run good/great when you bought it?
did it run good right before you painted it?
did you touch the carbs?
if it ran good and you didn't touch the carbs....it is probably not the carbs
it the bike will start the main ground wire is good
i still think a wire is loose or something is not attached properly
go thru the bike and check all elec connections
hey guys, Ya the bike worked wickit when i bought it. The bike worked soon as i took it out of storage. It ran perject before i painted it too. I painted the frame and i painted the motor and took the motor out all the same time. I only took the carbs off to clean them, thought maybe it was dirt. The bike will start good. But sometimes she sputters while she's idling. Like idling rough. What wires should i check for that might be bad?? Thanks guys.. Hope you guys can help me out.
Auxillary ground. Battery cable negative to wiring harness there is a thinnish wire ... its plug being a bit loose etc ... kills 1 side.
Cool.
Srinath.
Explain a little more please..
any help guys?
3d
Quote from: jefferygs500 on March 31, 2006, 11:04:06 AM
Explain a little more please..
Our friend Srinath is referring to this connection:
(http://216.77.188.54/coDataImages/p/Groups/41/41309/folders/208237/Thumbnails/1606906harnessearthconnector2.jpg) (http://216.77.188.54/coDataImages/p/Groups/41/41309/folders/208237/1606906harnessearthconnector2.jpg) View without contrasting backing (http://216.77.188.54/coDataImages/p/Groups/41/41309/folders/208237/Thumbnails/1606904harnessearthconnector1.jpg) (http://216.77.188.54/coDataImages/p/Groups/41/41309/folders/208237/1606904harnessearthconnector1.jpg)
I painted my battery box with red Plastidip, so you won't find that on your bike.
This is the combo cable that connects to the negative of your battery. The smaller plastic connector is the wiring harness ground (earth, return) connection to the Ignition Module.
The big part of the cable runs to the bottom of your engine where, as werase643 pointed out, you should have a clean, non-painted, non-greasy point to connect to the engine. Even with that clean, you could have a bad "frame ground" via the mounting bolts.
i started the bike up in the building. and i noticed that the left side of the engine gets really hot, but the right side doesn't get near as hot. Is this common??? or could this be the cause of the loss of power. thanks. could this be a head gasket gone?
OK Head gasket ... do this ... start it up and put your face especially your eyes right in the middle part of the motor ... sorta eye level with the float bowls in the carb ... OK stay that way and rev it ... now if you still can see out of your eyes ... you're good.
Its electrical and the crank trigger and the ground are the only cuplrits. Oh yea the famous kerry problem, connections on the crank trigger to wiring harness ... Yea that too ...
Cool.
Srinath.
hey thanks alot, what about the people before told me about the doing the sync to the carbs. i found the screw. How many turns should this be out for stock jets
thanks
Quote from: jefferygs500 on March 31, 2006, 05:26:15 PM
hey thanks alot, what about the people before told me about the doing the sync to the carbs. i found the screw. How many turns should this be out for stock jets
thanks
What ... carb synch is different ... its synching vacuum, and you're talking about turning out the air mix screws, and with stock jets ... I'll guess 32 turns after it falls out should be about right ...
OK since you're clueless ... Yea its impossible to get the mix screws to where it even runs right with stock jets. In any case ... synching isn't your problem ... it may run like crap but it will run on 2 ...
Cool.
Srinath.
Jeff stop!
Put the screwdriver down!
Take the bike to the shop/dealer. Let them fix it and get it running and rideable for you.
Sorry dude but you are apparently in over your head. A streetbike, even a simple one like a GS is alot more complicated and the margin or error much smaller than for dirtbikes. There are lots of things on a motorcycle that have to be right for it to be safe.
Just don't want to see you get hurt or the bike so fouled up that you throw it in the street and set it on fire in frustration.
what??? I never done nothing like that??? A person a while back in the post told me to do it. I knew i couldn't do it, jsut wanted to no what it was meant by it.. listen guys,, I called the dealer they told me $600 to fix it, and they didn't even no what it was. so thats way to much. if you guys tell me i no me and dad can fix this... thanks guys. this really does suck. like i said, the bike is perject on the center stand. you can notice the bogginess on the levels, but you can barly make it up any hills. thanks
Ok if you can't afford to have a shop fix it up...
The first thing you should do before even looking at the bike again is to buy the repair manual for it, either factory Suzuki or the Clymers (preferably).
Then READ the book.
Cover to cover.
Then have your Pop read it too.
Thus armed with the knowledge of the clever little Japanese people who built the bike, then try to fix it.
Where are you ... bring it to my house and I'll guarantee you will ride it back to yours ... In am in NC.
BTW your battery is probably flopping back and hitting the positive to ground ... or you got no fuel in the bowls ... Level ground its fine and its bad up hill ... how is it down hill.
Cool.
Srinath.
Quote from: Rema1000 on March 30, 2006, 08:05:34 PM
Wasn't there a problem, where the little ground wire to the battery breaks/comes loose, then you only get one coil firing?
I was referring to LCDS (Left Cylinder Dysfunction Syndrome), described by Starwalt here:
http://gstwins.com/gsboard/index.php?topic=24219.msg248537#msg248537
...but I guess that would cause the left cylinder to stop firing; not the right cylinder.
hey, she is at the worst on the hills. Like i said on the stand in the building Wicckit. on the Levels. you can deff notice the problem. down hills is better. she won't even make it up any size hill with 2 small people. like she lugging herself up. thanks
could the MAGNETA do this to the bike???
I would bet you ten dollars that the main jets have a small piece of dirt in them. I had a 600 radian would rev right to red line in neutral but with a load on it, it would not rev past 5.5 and would not go past 60 km hour. took off the carbs and the main jet was sitting in the bottom of the bowl. last owner did not tighten them after cleaning the carbs. just worked it self out. coils either work or dont so it would not run right at any time. carbs should not get that bad out of sinc buy just taking them off.
Could clogged jets cause one cylinder to run lean and misfire, while the other one remain fine?
yes you have two carbs and two cylinders. One carb does one cylinder so if the main jet in one carb is bad then that cylinder will not work properly and if the other is clean then that cylinder will work fine.
Main jet does top end about 4000-5000 to red line
pilot jet idol to about 5000 rpm
Have you vrified that you are getting gasoline to both carbs? As in-turn on the petcock and loosen or remove the float bowl drain plugs and you should get gas draining out.Or, when the engine is cold-start it up and carefully touch the exhaust pipes near the head. Do they both get hot? Or is one way colder? I believe you said you had the engine out of the frame? Are the fuel lines hooked up properly? Are the wires all hooked up properly? You do need a manual.
JJN
hey guys, ya this is almost a month now, and i still haven't figured it out. nothing at all. Ummm i'm going to try to explain it alittle better for yas. Like i said, cost me 600-700 for my dealer thats way to much. Umm i'm taking my carbs off and giving them to my friend he's going to check them all over, he said he'll no he's good around that stuff... but i checked them and i cleaned them all anyways here wa it is. Took it out again for a drive. When going 80-90 km's she's revving around 6200 rpms. kk coming up my gravel driveway... just a little slope, i slow down to about 20 km's in first, turn the throttle, the bike just bogs and slowly goes, the back tire won't even make a mark in the gravel. parked the bike, and came out again, i find it kinda hard to start stubborn. Lots of fire, when the bike is going and i pull of the plug caps, you can deff notice the difference in sound. anyways hope this help thanks. I was thinking maybe a low battery would cause this not sure tho, thanks guys
bump
Air filter maybe? (At least I'm trying something different) :dunno_white:
I don't really know, but, I washed my 93 GS at a carwash the other day and got the air filter wet, :icon_rolleyes: (yeah, I'm a clutz) and it didn't want to start, or run right after it did start :2guns: till I got the filter dried out. Maybe yours has a problem?
My cousins bike (CBR250RR) used to struggle like this when he had his high beam on (100W globe).
Maybe your electricals are weak?
It sounds like you have an intermittant misfire on one cylinder. You either damaged a wire when you pulled it apart to paint, or you painted something you shouldn't have. There shouldn't be any paint in ground strap bolt holes, the bolt should make a good clean connection to bare metal. Check wires going into the wiring harnesses for damage; make sure the strands aren't broken and there is no visible corrosion. Double and triple check your electrical connections. Lightly sand them and WD40 them... If your coils are ok, it starts and it runs and kinda drives, it is more than likely a electrical connection.
mm.. tough one.
everyone. LET the powers of GSTWIN combine!!!!!!!
BRAINSTORM!!! Get this man back on the street.
Quote from: 3imo on April 10, 2006, 11:52:45 AM
mm.. tough one.
everyone. LET the powers of GSTWIN combine!!!!!!!
BRAINSTORM!!! Get this man back on the street.
Have you read this thread? He doesn't really understand the engine, and hasn't even bought a book.
The bike quit running after painting, so he's probably painted over a ground point, causing it to misfire. However, he's apparently not checked the grounds yet. You can't help those who won't help themselves.
I was giving the guy the benefit of the doubt.
I have been reading the posts. I doubt he doesn't understand engines, hes just got a tough one, is all.
according to his posts he did check the grounds.
Aside from not having a book, I thought he was on track. he's bouncing around from ground to carbs, but thats because other GSTWINNERS have brought it up.
I think it is definitely electrical. I would check the electrical to the right spark plug with a multimeter. compare spark strenght (if there is any at all in the right side) if not check out the ignition module. disconnect and reconnect.
I doubt he's an idiot. just a guy with a GS500 in need of some help. Thats what I was when I found this sight.
also check the ignition sensor ground, as suggested before. if you painted in there that will need to be sanded as well.
one thing that confuses me about the whole grounding issue is that the bike runs good while on the center stand.
try looking for things that move when you move the bike...ie...batterry. (i think someone brought that up)
Quote from: 3imo on April 10, 2006, 12:46:30 PM
I was giving the guy the benefit of the doubt.
I have been reading the posts. I doubt he doesn't understand engines, hes just got a tough one, is all.
according to his posts he did check the grounds.
Aside from not having a book, I thought he was on track. he's bouncing around from ground to carbs, but thats because other GSTWINNERS have brought it up.
I think it is definitely electrical. I would check the electrical to the right spark plug with a multimeter. compare spark strenght (if there is any at all in the right side) if not check out the ignition module. disconnect and reconnect.
I doubt he's an idiot. just a guy with a GS500 in need of some help. Thats what I was when I found this sight.
It just seems to me that he doesn't grasp the concepts that have been mentioned. e.g. carb synchronization, idle speed screw, fuel/air mixture screw, etc. I don't know if he doesn't understand them, or he just doesn't know what they are because he won't go buy a book.
ok :thumb:
hey man, buy the book!! its worth every penny. hell i have two of em'
hey guys, i did check all the grounds, cleaned them up very well, I never painted the whole frame just the parts you see when everything is together, i never painted underneath the seat and stuff. i checked the idle screw, i didn't syn the carbs don't no wa that is, But i never touched the carbs, so i no that isnt it, I checked the grounds with a tester all are good... bike is really good on stand, when ya put a load on it like i said i dunno, checked the battery.
turn the bike on and pull the plug off the spark plug right side. does the bike stay on? does your hand get shocked?
reconnect
do the same to the other side. does the bike stay on? does your hand get shocked.
I bet if the bike stays on both times then one sides shocks you harder than the other.
------
this might distinguish between a carb issue and an electrical. do youhave spare parts to work with?