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new 78 GS750 owner idles high

  • Thread starter Thread starter kulrich10
  • Start date Start date
K

kulrich10

Guest
Hi,
I just recently acquired a 1978 GS750 32,000 miles and rebuilt at 25,000 (from why i was told) it was well taken care of and it seems to run good sounds great no knocks or anything. other than taking about 3 min to warm up. once its warms up it idles good around 1100 rpms. then i go out for a ride and get back home then the idle is much higher around 1500 rpms. does anyone know what would cause this? Im new to motorcycles and am nervous about opening up these 4 carbs.
any suggestions would be great
thanks
 
You have air leaks in the intake system

Most likely cause - O rings between intake boots and cylinder head

But, try turning the idle down from 1,500 to 1,100 when warm and see what happens
 
Greetings and Salutations!!

Greetings and Salutations!!

Hi Mr. kulrich10,

It really takes longer than three minutes for these engines to get to full operating temperature. All adjustments should be made after operating temperature has been reached. If you set your idle while the engine is cooler it will probably idle higher once it is fully warmed up. That's normal. I also think air leaks in the intake would cause a higher idle than what you are experiencing. Don't get me wrong, it's never a bad idea to replace all of your intake rubber. But you might want to be sure you have a problem there before you start throwing parts at your bike. Check the maintenance lists in your "mega-welcome".

Anyway, let me dump a TON of information on you and share some GS lovin'. :D

I just stopped by to welcome you to the forum in my own, special way.
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If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....
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Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Cleanup Series, and the Stator Papers. All of these tasks must be addressed in order to have a safe, reliable machine. This is what NOT to do: Top 10 Newbie Mistakes. Now let me roll out the welcome mat for you...

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Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike! :D

Thanks for joining us. Keep us informed. I will put you on my prayer list.

Thank you for your indulgence,

BassCliff
 
Don't be nervous. Just be patient and organized. With all the info this forum and it's members have to offer, there is no reason to avoid the carbs. I felt the same way but I plunged in anyway and it was way easy and now my bike runs like a scalded dog.
 
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