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I'm new to the forums and new to the motorcycle scene. I just bought an 84 gs550 es for $900 with 25,000 miles... it worked fine when i bought it then when i got it to my gfs house i had to leave it sit for a couple days. while it sat i forgot to turn the gas off and it left gas on the ground. it still started right up and didn't have a problem with it then. I rode it a couple times with no problems then it started acting up.
First problem: It only starts when it is hot out, not warm or cold. when it does start i have the choke fully on and it idles real high and if it doesn't warm up long enough it will die. but when it dies the electric start will not fire it back up but if you roll it and drop the clutch while in 2nd gear it will start. I thought it was getting flooded because when this first started i would shut the gas off and leave it sit for about a half hour then it would start. (The guy that had it cleaned the carbs and jets before i bought it and it idles high. its doing better now that i have put a little bit of new gas in it.) when it is started it seems like it is missing and just not running like it should.
P.S. Also sometimes when pressing the start button after trying the first time it does nothing, then sometimes starts to work again with out doing anything and sometimes if i roll it down parking lot it will try again. also there is no clicking noise that happens in cars that comes from the starter.
So heres what i did in an attempt to fix the problem
First, took all fairing off and tank off.
Looked at the manual to check if the spark plugs were right. they were the wrong ones, seems like it still has the same problem after changing them
The wires probably need replaced but they still spark. do i need to replace the whole ignition coils or just the wires and connectors or can i just replace the connectors
also by the ignition box by the relay has a Green/Brown/Black White wires that go to that box in one harness that is plugged in there is another harness with more wires too. but there is another green/brown/ black white wire harness that looks the same as this just hanging and not hooked up to anything. have no idea where it goes.
That is all i have tried for this problem so far.
Second problem: The turn signals worked when i bought it. after a couple days like the first problem the back turn signal stay on light went off. then the next day it started working again. then they both shut off.
What i did to try to fix it.
first looked at the bulbs... they are fine
next checked if there is power. no power
saw 2 wires hanging from where the headlight plugs in (headlight works) they are Brown and Black and white. we tried plugging the black and white wire into a black and white wire from the front signal and one of the back ones turned on.
next traced it down untapped the green wire where it is connected to 3 other green wires. no power cannot find out where they go to check next... they get lost in a bundle of wires with a black tube all the way around it.
checked all grounds i could see.. they are fine.
Checked the relay and when the turn signal switch is on it clicks once... looked at the book for wiring diagram it says there are suppose to be three wires into the relay... there are 2 into it and one wire hanging close by(Black and white) not plugged in.
Third and fourth little problem
Dash lights do not work at all and the tachometer does not work either
thank you in advance.
i posted all that i could think of that might help troubleshoot the problem. i may have missed something that i tried. Really would like to get this thing running because i haven't got to ride it much and its summertime and i really want to ride 
First problem: It only starts when it is hot out, not warm or cold. when it does start i have the choke fully on and it idles real high and if it doesn't warm up long enough it will die. but when it dies the electric start will not fire it back up but if you roll it and drop the clutch while in 2nd gear it will start. I thought it was getting flooded because when this first started i would shut the gas off and leave it sit for about a half hour then it would start. (The guy that had it cleaned the carbs and jets before i bought it and it idles high. its doing better now that i have put a little bit of new gas in it.) when it is started it seems like it is missing and just not running like it should.
P.S. Also sometimes when pressing the start button after trying the first time it does nothing, then sometimes starts to work again with out doing anything and sometimes if i roll it down parking lot it will try again. also there is no clicking noise that happens in cars that comes from the starter.
So heres what i did in an attempt to fix the problem
First, took all fairing off and tank off.
Looked at the manual to check if the spark plugs were right. they were the wrong ones, seems like it still has the same problem after changing them
The wires probably need replaced but they still spark. do i need to replace the whole ignition coils or just the wires and connectors or can i just replace the connectors
also by the ignition box by the relay has a Green/Brown/Black White wires that go to that box in one harness that is plugged in there is another harness with more wires too. but there is another green/brown/ black white wire harness that looks the same as this just hanging and not hooked up to anything. have no idea where it goes.
That is all i have tried for this problem so far.
Second problem: The turn signals worked when i bought it. after a couple days like the first problem the back turn signal stay on light went off. then the next day it started working again. then they both shut off.
What i did to try to fix it.
first looked at the bulbs... they are fine
next checked if there is power. no power
saw 2 wires hanging from where the headlight plugs in (headlight works) they are Brown and Black and white. we tried plugging the black and white wire into a black and white wire from the front signal and one of the back ones turned on.
next traced it down untapped the green wire where it is connected to 3 other green wires. no power cannot find out where they go to check next... they get lost in a bundle of wires with a black tube all the way around it.
checked all grounds i could see.. they are fine.
Checked the relay and when the turn signal switch is on it clicks once... looked at the book for wiring diagram it says there are suppose to be three wires into the relay... there are 2 into it and one wire hanging close by(Black and white) not plugged in.
Third and fourth little problem
Dash lights do not work at all and the tachometer does not work either
thank you in advance.
i posted all that i could think of that might help troubleshoot the problem. i may have missed something that i tried. Really would like to get this thing running because i haven't got to ride it much and its summertime and i really want to ride
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