so this is the problem, when im taking off i give it a bit of gas and it goes ok, but if i take off and have to accelarate hard the bike wont rev, so then i pull in the cluch rev the bike and then it picks up, the thing is that i have to open the carb slowly if i open it all at once it just dosent rev. if this helps, the bike is a 92, i have pods with 40 mid and 150 main, 3 turns out, carbs are balanced and fuel is ate the gasket level, plugs are new also.
could this be a lean condition?
Have you added a washer under the needle clip?
yap, mine works with cilps, tryed it and nothing :icon_confused:
I bought some fuel for my Ninja 250 last time I rode it in Sept, added Sta-Bil too....started it today and it would not idle or run at any RPM below 4000 until I drained the fuel and added fresh. I have never seen gas turn to crap that fast :mad:
How old is your fuel?
the fuel is fresh, the bike over 2k is perfect, under that in first gear it just dosent rev
Think a hole in a carb diaphragm would give similiar prob`.
partially clogged pilot jet.
pilot jets were clean. but could the pilot jet have infulence on idle?
Jordan, Actually I was having sorta the same problem, kinda still am. but Everyone says its the carbs/ check the carbs, blah blah blah.. I still haven't found the problem, but I know I need to rebuild my carbs, sounds like you already did yours? Check if the boots connecting the carb to the engine are loose/cracked/rotted. Cause that can cause the issue your talking about sometimes.. letting more air in. I actually need to replace mine cause my bike was beat up as a child.. there's different ways for checking for leaks. Google some of them. I'm still a newb so don't wanna give you any misinformation.
Something else to consider, like someone else said, is that there might be an issue with the carb diaphragm. A small vacuum leak could cause what you are describing.
Though, it sounds like you're trying to open the bike all the way up from idle quickly? I'm still not sure. Maybe a video could help us.
Quote from: Kijona on December 25, 2011, 06:23:59 PM
Something else to consider, like someone else said, is that there might be an issue with the carb diaphragm. A small vacuum leak could cause what you are describing.
Though, it sounds like you're trying to open the bike all the way up from idle quickly? I'm still not sure. Maybe a video could help us.
yes that is what i do, and it just bogs down
Quote from: jordan on December 25, 2011, 10:40:42 AM
pilot jets were clean. but could the pilot jet have infulence on idle?
Pilot jet and fuel screw have everything to do with idle up to about 1/3 throttle.........main jet takes over at 2/3 throttle all the way to WFO. Although they looked clean, I would pull them out, clean them with carb cleaner and compressed air, then try it. That way you can rule that out.
it could be a learn contition, im going to open it up to see if everthing is ok
so i messed with the carbs a bit and its 2,5 turns out, so i gave it 4 turns, and went for i ride, so the bike didint bog down so much, i would let the first gear at idle and twisted the dam wrist :D when i did this be four the 4 turns it would just be bogging, know it bogs a bit and then it goes.
one more thing, if you guys are in a strait line and you let you bike idle in first gear, does the bike bog down and turn off or does it keep going withot giving throttle?
could this be the mid jet?
Quote from: jordan on December 26, 2011, 11:46:21 AM
one more thing, if you guys are in a strait line and you let you bike idle in first gear, does the bike bog down and turn off or does it keep going withot giving throttle?
could this be the mid jet?
I'm not understanding what you're saying. Are you saying that you're just rolling along in first gear without the clutch pulled or throttle and the bike dies? If so, that would all depend on how fast you're going. If you're not going fast enough the bike is just going to stall out because it doesn't have enough power to keep it rolling without throttle.
Quote from: jordan on December 26, 2011, 11:46:21 AM
so i messed with the carbs a bit and its 2,5 turns out, so i gave it 4 turns, and went for i ride, so the bike didint bog down so much, i would let the first gear at idle and twisted the dam wrist :D when i did this be four the 4 turns it would just be bogging, know it bogs a bit and then it goes.
It could be that you're just compensating for a lean condition that's caused by something else. What it sounds like to me is your carbs are in need of a good cleaning. The easiest and least effort way that may, or may not work, is to dump half or a whole can of seafoam into a full tank and run it and see if it clears up. I know B-12 Chemtool is CHEAPER than Seafoam but it's a lot more caustic than seafoam and I wouldn't really be comfortable running that crap through. Works great for cleaning jets if you soak them in it but other than that...be careful! Could muck up your carbs worse...just saying.
Or...you can remove the carbs from the bike and take it to a mechanic and have them clean it thoroughly if you're not comfortable cleaning them yourself. It's tedious and can be time consuming and also, if you go to all the trouble of doing it, and it doesn't work, then you'll get really mad and end up taking it anyway. That's what I went through with mine.
Keep in mind that if you start messing with the carbs and taking them apart and stuff, you'll have to re-synch them. I know it sounds complicated but it's actually pretty simple to do - in fact it's easier than cleaning them and you can make yourself a manometer with about $10 worth of parts. There's a thread somewhere about it but I cannot find it. Maybe somebody will come along and link it. Or you could just Google "Home made carb synchronizing tool". :)
well, could the bike be learn, i do live at sea level, could be that maybe??? would a 40 pilot jet be enough?
i already open and cleaned the carbs several time, and it continues the same.
i was talking about the bike rolling along just by idle because i was riding on a yamaha XJ600 and it could do that with no problem without stalling
Quote from: jordan on December 26, 2011, 07:07:43 PM
well, could the bike be learn, i do live at sea level, could be that maybe??? would a 40 pilot jet be enough?
i already open and cleaned the carbs several time, and it continues the same.
i was talking about the bike rolling along just by idle because i was riding on a yamaha XJ600 and it could do that with no problem without stalling
A GS500 will not power itself along at idle in 1st gear. Not like how you say the XJ600 did. My Honda 919 will idle along in 2nd gear even. No way for the GS. So nothing wrong with your bike if it will not power along in idle in 1st gear.
Ok. So over 2k the bike is fine but it won't rev under 2k. So how do you get it above 2k to know it is fine?
Here's what I don't get. There is bugger all difference between idle and 2k. So little difference I doubt you'd notice it bogging down when you twist the throttle. What I think is going on is, you are thinking it is bogging down when you want to get going, but it isn't really anything abnormal, just you not giving it higher revs before letting the clutch out to start moving.
Your XJ600 wouldn't have this problem, so you are riding it the same way. Unfortunately, the GS500 is not an XJ600. And so I believe, you are mistakenly thinking it is a problem when what you describe is standard for this bike when it isn't given enough revs to get going.
Michael
Also, if you "jerk" the throttle from idle, a lot of times it won't respond very well to that. It's because they are CV type carbs.
well it could be that, after all, a gs 500 isnt a xj 600, but i thougt the gs could power idle. but i think the bike may be a bit lean. could be just my ploblem, going to give it one more try to see.