Choking/Warm up problems ?

[SoloRider]

Hi Everyone,

I am new to the Board and just bought 02' GS500 and have few questions of my bike's problems.

1. Is it normal for GS500 that it takes 3-5 minutes to get warm.
2. During the first 3-5 minutes of starting the bike, the engine seems to choke whenever I give more throttle. Sometimes I have the feeling that the bike may stall if I continue to give more throttle. Is this a problem with my carb. ?
3. Is it normal that when I close the throttle, the engine rev. seems not to catch up. That is the engine rev. remains hi while the speed already slow down.
4. My GS500 got only 3500 miles, could the problems surface this early ?

Appreciate all replies that the Board could provide.

Happy riding to everyone on the Board.

[JeffD]

No its normal.  Check out the rejetting page on GSTWIN.com and it should solve your problem.  

[pantablo]

1) Yes. The GS is carbereted lean from the factory causing this.
2) Yes, normal for the same reason above.
3) Yes, normal for the same as reason #1 above.
4) Not a problem. 3500 miles your bike should run flawlessly.

The way to remedy this is to replace the pilot and main jets (in carburetors) and turn the mixture screws out. All US bikes are like this for emissions reasons. Euro bikes come with larger jets already and the swapping doent oUS bikes brings them up to Euro standards.

But you can live with these problems. You'll also notice when the engine is well warmed up that the revs will hang at about 3K sometimes. You jsut need to reach under and adjust the idle speed-small knob facing down between the two carbs.

Hope this helps.

[SoloRider]

First, thank you all for the valuable responded information. With that, I have more questions to ask.

1. As a newbee, can I work on the carb. using Glymer's manual ?
2. Will a new K&N air filter solve the problem by itself ?
3. What other damages it may cause if I choose NOT to do so ?

Thanks again

Ivy843

[JeffD]

First, thank you all for the valuable responded information. With that, I have more questions to ask.

1. As a newbee, can I work on the carb. using Glymer's manual ?
2. Will a new K&N air filter solve the problem by itself ?
3. What other damages it may cause if I choose NOT to do so ?

Thanks again

Ivy843

Well can you work on the cabureator?  Its just screws, jets, washers, diaphrams etc.  If you are comfortable working on it, then I say yes.  If you have any doubt, then I'd say get a friend or someone on here that lives close to you, buy them a 12pack and ask for help.     i'd help ya for free, if you lived by Sarasota or Tampa Florida.

If you just bought an K&N filter, no it woulden't help.  The problem is not enough gas (or too much air) if you put a less restrictive intake on it, you would be giving it even More air.

If you didn't change it you can run the chance of detonation (not explosion, but preignition), overheating (being lean), the possibility of it stuttering when you first start riding and toss you off.(worst case).

[pantablo]

Leaving it alone is not as bad as JeffD makes it out to be. It just means you have to take care to warm it up and/or run it with slight choke on for first few miles. Note that as engine warms up it will die at some point if it has too much choke from being too rich.  Sounds more complicated than it is.

If the warm up and high idle doesn't bother you terribly then I'd leave well enough alone. With a 2002 you have the newer (01+ models) carbs and no one here has a surefire formula for the rejetting-meaning you'd be experimenting. The 89-00 models have been around long enough that there is a specific formula for rejetting a stock bike.

Air filter may only make it worse. If its a K&N replacement for stock (keeping the stock airbox) then it won't make a difference. If it installs instead of the stock airbox you'll have to rejet to make it run right anyway.

I've got a 2001 model and have left the carbs alone. Over time I have found the right idle speed to have it warm up quickly and still not hang too high but you'll have to experiment.

Also, I noticed after I installed the ignition advancer that it started up and warmed up easier. you may consider this modification. It takes 10 minutes and is super easy. Only problem is that it is not commercially available any longer and the only source is a member here; Bob Broussard modifies stock rotors to get same benefit, all for the cost of shipping (about $5). Do a search for ignition advancer and you should find a post of his regarding this or PM him directly from one of his posts.

Its super easy to install too: http://www.gstwin.com/ignition.htm

[SoloRider]

Hi Pantablo,

Your suggestion about the V&H ignition advancer seems to be the easiest solution for me.  But, I have a problem of finding this part.  I called Part411 and they told me they ran all out. Worse yet, V&H don't make this part anymore...

HELP!!!   Do you know where else I can get this part ?

[pantablo]

http://www.gstwins.com/forum/viewtopic.php?t=3515&highlight=ignition+advancer

OR  

http://www.gstwins.com/forum/viewtopic.php?t=3653&highlight=ignition+advancer

[JeffD]

As pablo said.  "Its not commercially available anymore"  You either have to do it yourself or contact.  BOB BROUSSARD  do a search on the forums for him. You'll find him.