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

  • Thread starter Thread starter liloaty
  • Start date Start date
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liloaty

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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 :oops:.

Someone please help me out here, I am getting so frustrated :confused:[-o<
 
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.
 
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!
 
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! :confused: :-D
 
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 \\:D/

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...
 
I believe you are right about the petcock screen being clogged. Now, the important question, how do I fix it :confused:
 
Pull off the petcock by removing the two bolts. The screen pulls off of the petcock and clean it up.
 
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.
 
chef1366 said:
Pull off the petcock by removing the two bolts. The screen pulls off of the petcock and clean it up.
Click to expand...

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?
 
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.
 
Try running with the petcock on the "prime" position. If it runs better you may have an issue with the vacuum function.
 
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.
 
liloaty said:
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.
Click to expand...
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!!!
 
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The air filter is brand new, so I'm not gonna clean that :-s

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!
 
The bike was running great before I touched the clutch plates and really after, it was when I removed the tank to replace the clutch cable that I ran into problems.
 
One day there fine,the next day there not.The gap is probably of too.New plugs should do the trick!
 
Maybe your float needle screens decided to clog up when you changed your clutch. Or debris from the tank decided to rest on the float needle, possibly fouling your plugs.
 
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