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Hi Folks, I have been a member of this forum since I got my 1977 GL1000 this last winter and have learned a lot from your how to`s and doing my own maintenance.

The GL I got is in excellent shape with 51K on it and it did not sit for long periods at a time and was under cover it`s whole life and most maintenance was performed. Here is what I did, changed plugs,synchronized carbs, new belts where on it when I got it and came with a dynaS ignition. I did run some MMO threw the carbs and sea foam later.

So here is the problem The bike runs great until it reaches operating tempature and when I come of the throttle fast ,say at a stop lite the idle drops down below 500rpms and some times it dies. I restart and it idles fine until the next stop I make. When sitting on center stand I rev it to 4K and come off the throttle and it dies, I rev to less than 4K and come off the throttle and it goes back to the 1000K idle no problem. Seems to do this only when at operating temp. I changed fuel filter and no change, I synchronized the carbs again and they are almost perfect as you can get with that but no change. it does not stop me from riding but it is a hassle to restart at stop lights. Iam thinking it might be the idle jets but really do not know much about these carbs. By the way I get about 40mpg. I would appreciate any suggestions to cure this problem.:(
 

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Nice looking bike.

I'm going to take a guess here and say that it's a bit lean at idle. Try turning the idle mixture screws out a little.
 

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I just completed the adjustment of the idle mixture screws and seems to idle a lot better afterwords. I did not have to do the drop idle since it was pre Dec 1977 model so I just adjusted out a bit at a time until it idled good when I got off the throttle. Probably turned out the screws a total of 1/2 to 3/4 total then adjusted the idle itself back to 1000rpm.The problem seemed to disappear,but won`t know for sure until I can take it out on the road tomorrow. Thanks K1W1t1m for your suggestion
 

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I took it out on the road today and it ran like brand new and even lifter noises disappeared, the idle was rock solid at 1050rpms at idle. it is amazing what a little adjustment will accomplish.
 
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