'80 GS1100E won't idle, slow throttle response, low on power

[liloaty]

Last weekend I replaced my fiber clutch plates and my clutch cable. To do so I removed the tank to route the clutch cable. To do so I had to remove the vacuum and fuel lines.

That is the extent of the fuel system I touched. I got it back together, tuned the clutch cable and started it up. It will not idle unless I have it fully choked, and even then it only revs to about 2k RPM, it used to hit 3.5 or 4 with the choke completely pulled.

If I keep giving it gas with the choke off it will stay running but there is no power and the throttle response is so bad that its pathetic. I checked the fuel line and the vacuum line, both are intact and connected. The petcock is on, before anyone asks that question .

Someone please help me out here, I am getting so frustrated [-o<

[Guest]

When dropping the tank that last three or so inches you might be kinking the fuel line. It can happen cause I did it.
Also make sure the float bowl vent lines aren't kinked either.

[liloaty]

Both good things to check, but I already did. I will check them again since I pulled the tank again but I'm pretty certain thats not it. Keep the ideas coming guys, I really appreciate the help!

[Dave8338]

Did you stir up some crap in the tank and plug the petcock screen? Obvious fuel shortage issue... also check the rear brake light, you never know! :-D

[liloaty]

Maybe I will try by passing the petcock with a funnel or something like that to see if it is clogged.

The rear brake light works btw \\/

It is definitely a fuel shortage problem, I just cant pinpoint where. I unplugged the vacuum line from the carbs, and its definitely sucking and the line isn't clogged. So either its as simple as the screen is clogged or I have a larger problem to deal with...

[liloaty]

I believe you are right about the petcock screen being clogged. Now, the important question, how do I fix it

[Guest]

Pull off the petcock by removing the two bolts. The screen pulls off of the petcock and clean it up.

[tconroy]

This may sound silly but pull your plugs and clean them also clean your air filter and give it a try.I dont know where your from but the humidity can cause problems when a bike sits for a few days.

[liloaty]

Pull off the petcock by removing the two bolts. The screen pulls off of the petcock and clean it up.

So I pulled the petcock filter, and it was squeaky clean. No debris at all. I am going to try and get a long fuel line and run it from my buddies bike to mine to see if I can isolate the problem.

Any other ideas guys?

[tconroy]

Are all your pipes warming up?Could have a clogged pickup tube in one of the carbs.My bike did the same thing after sitting for a week. I pulled and cleaned the plugs and air filter.I has ran fine ever since.Go with the simple stuff first.

[RJ]

Try running with the petcock on the "prime" position. If it runs better you may have an issue with the vacuum function.

[liloaty]

I have good fuel flow and good vacuum, I just verified that. I pulled the plugs to check for spark and they are fouled pretty badly. The stores are all closed so I will give that a shot tomorrow.

[tconroy]

I have good fuel flow and good vacuum, I just verified that. I pulled the plugs to check for spark and they are fouled pretty badly. The stores are all closed so I will give that a shot tomorrow.

Take your plugs and clean them with a finger nail file,the waferboard kind or some 100 grit sand paper.Then spray the plug off with carb cleaner to get the sand particles off,then regap.Also CLEAN YOUR AIR FILTER TOO> I guarantee that's your problem.Then post and tell me I was right!!!!LOL!!!

[liloaty]

The air filter is brand new, so I'm not gonna clean that

I think you are right about the plugs however, they were pretty bad and they need more than a cleaning, they need to be in the dumpster!

[MelodicMetalGod]

How was the bike running BEFORE you did the clutch work?