Carb tuning

[outlawfox13]

I'll pull em off tonight and take a look. What #'s would I be looking for if its been jetted? And what are stock #'s

 

[almarconi]

For your carbs

Main - 112.5
Pilot - 42.5
Float height - 22.4mm +/- 1mm
Fuel lever - 5mm +/- 0.5

 

[woodman]

Ill be sure & jump in next time you need help with an atitude like yours. Helping is not bashing, you are obviously new at this if you didnt check the jets to see what they were.

 

[outlawfox13]

Ill be sure & jump in next time you need help with an atitude like yours. Helping is not bashing, you are obviously new at this if you didnt check the jets to see what they were.

To be honest, I think you have the wrong Idea on this. I have no atitude, all I am saying is I don't appriciate it when I am asking for help and all I get is told/assumed that I have done something incorrectly. Yes I used a parts washer, that is used for cleaning oil,gas,deisel and other car/motor parts. Maybe no one else has used it before, but how are we to know it does not work if someone does not try it?

Also I am being spoken to as if I did not disassmble my carbs. I have read the directions and followed them. I even replaced the o-rings from cycleorings.com. If it's not bashing then why would it be brought up that I haven't done this? This is why I am saying that its bashing. Especially when I posted that I did replace the orings and break down the carbs.

If you were being told that you haven't done something, even though you have, then I am sure that you would believe you are being bashed. Now wether or not the person meant it in a bad way or not, then they could easily reply and say it was not meant in a harmful way. But if they chose not to then again I am left with one opion that it was bashing.

I am not on this site to start a fight or tick people off, I am here for help and advice. Since this is my first bike.

And as for checking the jets I did see that there were #'s but I did not write them down. I also did not know that it needed to be jetted because of the air filters and exhaust. I had gotten this bike for like $400 and I realized I probobly got a bad deal even though it did run. (but I was new to this)

 

[Larry D]

Don't worry about all the "helping"....although they actually are trying to make sure you did what was recommended.
There are alot of new folks here that say they cleaned the carbs, only to discover they just sprayed them with some carb cleaner.

Also, I didn't know that my bike was supposed to have an airbox when I first got it.....so a certain lack of knowledge is expected.

With pods, re-jetting will be required because the engine is sucking in much more air than is required with stock jetting. The air/fuel mixture is critical to proper performance. The carbs should be disassembled...again..and see what you have in there. The stamped numbers are very small. If you have a magnifying glass it will help. I took mine to Wal-Mart and borrowed the jewlery counters jewelers glass....the lady thought I was a nut, but, she let me use it and stood there while I inspected the jets. She didn't even ask what I was looking at.....

So you don't feel bashed.....I was having trouble with mine awhile back. I removed the carbs to check the jetting and someone had installed the incorrect pilot jets....I wasn't educated enough to know when I dipped them either.

I highly recommend spending as much time as you can simply reading posts concerning your bike, jetting, syncing and whatever may interest you. I currently searching and reading as much as I can find about head and base gasket replacement, as that's what I'm doing next.

Honestly everyone is trying to help...sometimes you gotta take it with a grain of salt.

 

[outlawfox13]

For your carbs

Main - 112.5
Pilot - 42.5
Float height - 22.4mm +/- 1mm
Fuel lever - 5mm +/- 0.5

What is the fuel lever? I dont remember reading bout adjusting that? I did check my float height and they are good. I will get the #'s from the carbs tonight.
Thanks

 

[Lanis]

this may sound shadetree, but I don't have gauges to sync my '82 GS650L; so I run it...hand test the heat from the dominant carb. I re-heat, then adjust the one beside it to same temp, until I get them all close to the same...it runs like a new one...hits 9k rpms quick. Hey, it worked for me and the bike ripps to high speed with very little throttle.
But, the rear brake has me stymied...can't get it pumped. Read on here to elevate the caliper and pump out the bubbles..thats next.

 

[almarconi]

What is the fuel lever? I dont remember reading bout adjusting that? I did check my float height and they are good.

That should be fuel level. Fuel level is critical because it effects all needle positions. It is measured by hooking up a piece of clear tubing to the float bowl outlet and filling the carbs with gas. The tube is place against the side of the bowl and the height of the fuel is measured. If its too high you are rich, too low and you are lean. Setting the float height is only the first step. Even if all four floats are set at the exact same measurement, the fuel level may not be the same. I found that out while setting up the carbs on my KZ750. I even used a digital calipers and the fuel levels came out different. The condition of your floats, needles..etc can effect the fuel level as well. It only take a minor tweek of the float tang to radically change your fuel level.

I have found that some people don't have enough smarts to admit they don't know what the f**k they are doing. There is no shame in not knowing. When you try to offer help and the person who asked the questions acts like they have all the answers, is when I get frustrated. They ask you how to do something and then when you offer suggestions, they tell YOU how to fix it.
Spend some time on this forum and you will come across these type of people. They know it all but really don't know how to fix anything. They are still trouble shooting the same problems for months or asking the same questions over and over again. Here is an example of the type of guy I'm talking about

http://www.thegsresources.com/_forum/showthread.php?t=146985&highlight=carbs

I think that $400 is a good price for your bike. I paid $380 for mine and it didn't run. Expect to spend some time and money getting your bike in safe ride able condition. Don't forget its 28 years old and I'm sure has seen its share of neglect.

 

[Guest]

You need to learn how to read spark plugs. This will tell you if you are lean or rich.
Find out if there are baffles in the cans.
If there are no baffles I'd ether get a Dynojet kit or put a 125 main jet and shim the needle by removing the spacer over the jet needle and replacing it with washers from Radio Shack the same heigth and removing two to three of them. This will richen the needle circuit and main circuit. The idle mixture screws should be out 2.5 to 3.5 full turns out or less if you go up one on the pilot jet.
Post a good macro pic of the plugs and I could tell you more.

 

[outlawfox13]

Well last night I found out why my bike is not running right. Cyl 2 is not firing. I believe a lock nut may have come undone when I did the valve adjust. Since this was not a prob before I adjusted them. I figured something was missing, so I so i sprayed a lil water on the headers and noticed that one header was not hot. I also checked to see if I was getting spark and I am.

So before I check the carb #'s I am letting the bike cool over night so I can re-check valve clearences.

After that I will drain the carbs and pop the bowls off, and check the needle #'s. I will also take some pics of the plugs for ya to see.

Thanks again for the help.

I will repost later tonight.

 

[Guest]

We'll see what everyone els has to say about this but I had an issue with two cylinders not firing and it turned out to be the carbs.
Had fire, compression... Pipes were cold.
The bike started and idled pretty good too, seemed to run smooth till ya got it out on the road, no power..

This was before the carb and jet rebuild. Runs like a top now. All pipes are within 20-30 degrees of each other.

 

[outlawfox13]

Well I pulled the valve cover last night and some valves were loose, but not real bad. I started the bike, and the cylinder was still dead. I sprayed a quick blast of starter fluid on the pod of the dead cylinder, and it fired, but just as long as there was starter fluid.

Tonight I will get the jet #'s. Been real busy

 

[Guest]

Pull the plug and put a few drops of gas in the failing cylinder.
Put the plug back in and fire it up. Dollars to donuts it fires. Be sure the plug is clean, or better yet new.
What cylinder is it??

 

[outlawfox13]

It is #2 that is bad. I took the carb off at lunch and checked # 2's float bowl. I remeber I had one float needle seat that got a lil bent when pulling it out for the dip. I checked and it was #2's carb. I thought it would be fine, cause the needle still went in the seat, but it would stick if it twisted. So today I fixed it sanded it with a file, so to make it smooth again. And now the needle moves freely inside it. I am pretty sure that was the prob will post tonight when I re-install.

 

[outlawfox13]

HURRAY!!!!!!!!!!!'

that was it!!

I just got back from a ride. And it is sooo much better.

Now the Jet #'s are

112.5
42.5
and the float seat said 2.0

So it looks like I will be ordering a jet kit.

Thanks again guys, even though there was miscommunication, especially on my end, and if I offended anyone I appologize for that.
I just hope this did not stop anyone from offering help now or ever again.

 

[Guest]

Those darn pesky carbs!!!

They're a lot more touchy than some folk realize.
The best thing is to not give up!

 

[outlawfox13]

yea as soon as I get some extra cash I am gonna order the jet kit.

Man I bent the crap outa the float seat. I had to use a punch and some files to clean it up. Well all is good for now. (till i get the jet kit)

 

[Guest]

yea as soon as I get some extra cash I am gonna order the jet kit.

Man I bent the crap outa the float seat. I had to use a punch and some files to clean it up. Well all is good for now. (till i get the jet kit)

How in the world did you bend it?

Do a search and talk to the carb guys, they may be able to give you some tips on the jetting without spending a buncha coin.

Listen to what they have to say dude, lots of knowledge about these ols bikes around these here parts.

 

[outlawfox13]

When I went to dunk it, I had to pull it out, well in the directions it said to use pliers to pull it out. The others came out easy, but this one was stuck and I guess it bent when I pulled it out.

 

[Guest]

Hmm, I cant see it but whatever..
Congrats on getting it running better.

Now jet that puppy and I think(no, I know) you'll be amazed.
Almost endless fun!