I own a 2007 GS500F that I bought last year around August. I've never had a problem out of it. Around a week ago I was driving it home from my boyfriends house & I noticed it bogging a little bit. Not much, but just enough for me to notice something wasn't right. I figured it was due for a tune up. I got a new air filter, spark plugs, oil filter, changed the oil and cleaned out my carburetor. I didn't do a deep cleaning, just took the bowls off and cleaned the jets. I didn't mess with the floats. My fuel filter is still good. It idles at about 1,000. Maybe a little over. It isn't idling very smoothly, either. When I twist the throttle it cuts off immediately. When I turn the choke up the RPM's go to about 4,500 - 5,000, but it sounds awful. When I twist the throttle the RPM's drop and when I let it go, they shoot back up to where they were. :dunno_black: any ideas what it could be??
Btw, that's the first time I've ever cleaned a carburetor.. lol
Also, it runs rich, because the spark plugs I pulled out of it were black. I just ordered a stock exhaust. The guy that owned it before me, I'm assuming, didn't rejet properly or at all even. I guess I'll know when my new exhaust gets here.
Mine goes up to 3-4k with full chock for a bit. do you give it time to warm up be for driving?
i dont know... i'm just guessing right now... cos ive been too lazy to pull the bike that far apart myself...
but i would think from the desc ... you have an incorrectly positioned vacuum line (affects fuel feed from tank?)... or a blocked main jet (also affects fuel feed as pilots 'cut out' as the mains open?) .. or the mixture settings are waaaaaaaaay off....
this thinking from reading with interest the plethora of threads and info made by the real wrenchpeople around here...
i rather expect Addy .. or Weeds .. or Burnin .. or Sledge ... or Yama .. or John .. or Buddha ... may chime in and give you some proper guiding info soon enough!?
My guesses
Running too righ
And one cylinder not firing.
Try the Hillbilly carb sync method. See what that shows.
I didn't even get a chance to drive it. :/ lol it was warmed up. I even let it sit there and idle for a little bit with the choke off. Everytime I'd touch the throttle, it'd still die. Maybe I hooked one the hoses up wrong? It is a possibility. Those things are so confusing, but I'm pretty sure I got them all back in the right spot. What is the Hillbilly carb sync method? haha
http://gstwins.com/gsboard/index.php?topic=63424.msg751951#msg751951
Thanks. :D I'll try that out tomorrow and let you guys know how it goes!
Pull one wire then the other. See what happens. Pull one and nothing .... That side isn't doing much. Pull other and dies.... That side is doing all the work.
And check both plugs.
Post pictures. We love pictures.
First thought was that it needed carb sync or the air filter was clogged (probably both). But then I reviewed the OP and the 'new air filter' caught my attention. So you must have stock airbox, right?
... Anyways what I'm getting at is if you have a stock airbox and you added a new non OEM air filter, some of the 'direct replacement filters' such as HiFlo could actually be more restrictive air flow than the OEM filters... And you get a headache such as this. Some folks swap the filters without incident but best bet for replacing stock filter is to go OEM, and they are around $40 or better if I remember right.
This is one reason why folks upgrade the intake to K&N filters because you might as well pay for the lifetime filter and rejet with an additional performance perk for the cost of the OEM filters.
Also, you say the plugs are black... New ones or old ones? Or both?
- Bboy
I wanted to add that I don't think the stock exhaust will help. In fact, a less flowing exhaust would be slightly worse if you are already running rich.
In the case of the GS500, a rejet for most exhaust setups is not necessary unless the headers and pipes are dramatically changed in length or diameter. (Though the stock setup could use a rejet straight out of the factory because they do run lean to begin with, regardless of an exhaust change) What exhaust is on there now?
- Bboy
Quote from: billieray127 on March 20, 2013, 08:18:38 PM
I own a 2007 GS500F that I bought last year around August. I've never had a problem out of it. Around a week ago I was driving it home from my boyfriends house & I noticed it bogging a little bit. Not much, but just enough for me to notice something wasn't right. I figured it was due for a tune up. I got a new air filter, spark plugs, oil filter, changed the oil and cleaned out my carburetor. I didn't do a deep cleaning, just took the bowls off and cleaned the jets. I didn't mess with the floats. My fuel filter is still good. It idles at about 1,000. Maybe a little over. It isn't idling very smoothly, either. When I twist the throttle it cuts off immediately. When I turn the choke up the RPM's go to about 4,500 - 5,000, but it sounds awful. When I twist the throttle the RPM's drop and when I let it go, they shoot back up to where they were. :dunno_black: any ideas what it could be??
Btw, that's the first time I've ever cleaned a carburetor.. lol
Also, it runs rich, because the spark plugs I pulled out of it were black. I just ordered a stock exhaust. The guy that owned it before me, I'm assuming, didn't rejet properly or at all even. I guess I'll know when my new exhaust gets here.
If you have a fuel filter, take it out. We have fuel filters in the tank petcock that are a screen type material. That may be your problem there. Not designed for an inline filter. Not all inline filters flow properly, causing fuel starvation (bogging, etc). Our fuel system is like a lawn mower...gravity fed, while other bikes such as modern fuel injected ones have a fuel pump.
Also, you plugs look black since you had it on choke for a while. Choke dumps more gas to assist with cold starting.
Okay, guys... I'm not gonna be able to mess with my bike for a few days, cause I'm going out of town. But I'll let you guys know when I get back.
As much as I hate to admit it, my exhaust looks like the person that owned it before me had a slip on on it. It's cut. Trust me, I've read and read and read about it, but I'm not exactly the richest person and just now got to where I could buy a new one. Lol but I haven't put that many miles on it.
Quote from: billieray127 on March 21, 2013, 09:47:22 PM
As much as I hate to admit it, my exhaust looks like the person that owned it before me had a slip on on it. It's cut.
Oh, I gotchya! Yeah probably sold the slip-on separate from the bike... then yeah, you do need an exhaust regardless of jetting or any other factor... its probably loud as H*!! ...
Quote from: billieray127 on March 21, 2013, 09:47:22 PM
but I'm not exactly the richest person and just now got to where I could buy a new one. Lol
Oh, you don't have to tell us or be embarassed by any of that, we already knew it... The GS500 is a thrifty bike...
unless of course you are hiding a bike cave full GS500s and more parts than a dealer :icon_rolleyes: *cough adidasguy *cough* ...
:cheers:
- Bboy
It's very, very loud. Haha and I wish, dude. I'll post pictures of it when I get ahold of a computer.
So its the stock muffler put back onto the bike?
Not yet. I'm still waitin on it to get here.
http://m1116.photobucket.com/albumview/albums/billieray127/my%20bike/2013-03-16151649_zps67f7d1ec.jpg.html?o=0Here's a link. Idk how to embed it. Lol
To post a pic go under attachments and other options its pretty easy.
And thats horrible lol. I mean i like louder sounds and all but damn haha.
Oh okay. Thanks. & I know. You can hear it from atleast a mile away. No exaggeration. Haha
Oh i can imagine. I had an 89 silverado and that thing was a monster when the exhaust seperated at the y-pipe.
When you first talked about it i thought it was just a bad exhaust, not mussing the muffler lol. Id worry about sometging like that here, ive seen cops with the decible-meters around big bike areas .
Quote from: billieray127 on March 20, 2013, 08:18:38 PM
I own a 2007 GS500F that I bought last year around August. I've never had a problem out of it. Around a week ago I was driving it home from my boyfriends house & I noticed it bogging a little bit. Not much, but just enough for me to notice something wasn't right. I figured it was due for a tune up. I got a new air filter, spark plugs, oil filter, changed the oil and cleaned out my carburetor. I didn't do a deep cleaning, just took the bowls off and cleaned the jets. I didn't mess with the floats. My fuel filter is still good. It idles at about 1,000. Maybe a little over. It isn't idling very smoothly, either. When I twist the throttle it cuts off immediately. When I turn the choke up the RPM's go to about 4,500 - 5,000, but it sounds awful. When I twist the throttle the RPM's drop and when I let it go, they shoot back up to where they were. :dunno_black: any ideas what it could be??
Btw, that's the first time I've ever cleaned a carburetor.. lol
Also, it runs rich, because the spark plugs I pulled out of it were black. I just ordered a stock exhaust. The guy that owned it before me, I'm assuming, didn't rejet properly or at all even. I guess I'll know when my new exhaust gets here.
My bike did the same thing as your talking about when I cleaned the carbs. My first time doing it also, come to realize after doing all this other shaZam! these people mentioned I had put the carb jets back in opposite on one side. So when I would give gas it would give too little gas and during idle get too much. Seriously my symptoms were the exact same as yours after I cleaned the carbs. Took them off again and looked a little more closely at them and each jet has a number and followed the wiki for which one goes in which spot, and boom. Put it all together and ran perfectly.
You should try this before anything else.
I'm sure. My buddy has a blazer that he cut the muffler off of and it's just about as loud as my bike was. But out where I live they don't care. Just about every truck out here is straight piped. I got my new exhaust on! I didn't get to do any work on the bike, but I had enough time to put that on. It's freakishly quiet... I don't like it. :- but it's for the better. Lol
;D
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Thanks, rharding91. Knowing me that's probably what I did. Haha do you have a link for the wiki page??
2004 - 2007: Pilot 17.5, Mid Main 60, Main 130
http://wiki.gstwins.com/index.php?n=Upgrades.Rejetting
did you pull the slides when you cleaned the carbs? Did you make sure the slide diapham was seated properly along with the slide facing the correct way?
What are the slides?
there's a plastic cap on top of the carb with 2 screws the slide is what moves up and down with the throttle lifting the main jet needle to allow more fuel to flow with more air.
#5 in this diagram i believe.
is your fuel tank vent clogged?
http://wiki.gstwins.com/index.php?n=Main.2003-current
Yeah, I'm pretty sure I put everything all back together properly. I'm gonna go through all my hoses and make sure I put them all in the right places. I don't think any of them are clogged. I'll check that too.
sorry my bad, i meant the vent in your fuel cap. if it runs ok with the cap open. there is your answer.
check out this thread.
http://gstwins.com/gsboard/index.php?topic=41061.0
Anyone know where this hose goes? It's a T. The other side of it hooks to about 500 more T's. xD
I tucked it up under some other hoses, so you could see which one I was talking about. Guess that didn't work as well as I planned. :-[
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looks like the vac line that runs the vac to your carb slides and to the petcock.
I thought that was a vent and the hose that hooks to it hooked to nothing? Atleast that's what I read.
Wait were you talkin about the tank petcock or the one beside the seat? lol
Okay, yeah, that hose goes to my petcock. I've got it all put back together now and it's idling wonderfully. ^-^ but.... It makes a little clacky noise and the rpms drop a little bit, almost dies, then rises back to where they're supposed to be. When I rev it it takes the rpm's a whole second to drop back down. Kinda laggy. What now? This whole not riding thing is driving me insane. :- and all this work is making me think twice about going to MMI.
Definitely just kidding. ;D I love getting to know my bike better.
Most likely a misfire. Mine does that too. Is it the left-hand side? How's your battery? I had that happen and it was a weak battery causing weak power to the LH coil. Common problem since the LH coil power wire travels through a lot of wires to get there.
This is all assuming your plugs are good and carbs are squeaky clean.
Go on a long ride (but don't stray too far from home in case something happens). That will charge your battery.
If you're standing behind the bike it sounded like the right side. I'll take it for a ride tomorrow.. Maybe. It's snowing. Tennessee doesn't know what's going on when it comes to how the weather is supposed to be. Lol but it probably won't stop me. Unless the roads are bad.
Quote from: billieray127 on March 25, 2013, 07:41:06 PM
If you're standing behind the bike it sounded like the right side. I'll take it for a ride tomorrow.. Maybe. It's snowing. Tennessee doesn't know what's going on when it comes to how the weather is supposed to be. Lol but it probably won't stop me. Unless the roads are bad.
What was wrong with it originally to cause the throttle problem?
I hooked up some of the hoses wrong.