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Engine loosing power

  • Thread starter Thread starter hogie
  • Start date Start date
H

hogie

Guest
Looking for help for a very novice mechanic. I purchased a 1977 GS750 that had been sitting for about 5 years (in a garage). Cleaned it up, changed oil, fresh gas, and got it started. Once it warmed up it would idle pretty good but fluctuated just a little. I took it for a slow spin to the end of the street and when I got up to approx. 20 it would just kind of bog down and die. Clutching and trying to nurse it back would not work. It would just die. A couple of things: 1. The battery is dead, I jumped it off. It would run till description above. 2. The carbs haven't been cleaned.
I realize tons of things wrong and in process of restoring but any ideas about the bogging down and dying? Thanks
 
First get a new battery. Then do the standard tune-up procedure. You've already changed the oil (you changed the oil filter, too, right?), so change the plugs, clean/re-oil the air filter, adjust the valves, clean/rebuild the carbs, then sync the carbs.

I wouldn't waste too much time trying to diagnose this specific problem because like as not it'll be gone by the time you do the above tune-up stuff. I know it's a lot of work, but if it helps any it's a very rewarding feeling when you're done. ;-)
 
Well maybe "done" isn't the right word... I don't feel like I'll ever be done either... ;-)
 
Quote:
Originally Posted by t3rmin
Well maybe "done" isn't the right word... I don't feel like I'll ever be done either... :wink:

I think being done means you can ride for a week without doing anything to it.
__________________
83 gs 650 L, BRAKE DUST IS MY WORST ENEMY!!!!

Or what is left to do is surpressed by one need to ride! Sounds like you may have some classic "Carb Issues" going on as well. Take things in order and you will eventually get to the point that Uncle Mike is at... :confused:
 
No...you're correct about that!!! A lesser man would have thrown in the towel a long time ago. I get worn out just keeping up on your troubles, I can't imagine having to be the one that has followed through with all that you've done to that bike. When it is RIGHT, you will OWN that f.@&*%g bike!!!!!!! It will be done! \\:D/

Dave
 
Dave8338 said:
No...you're correct about that!!! A lesser man would have thrown in the towel a long time ago. I get worn out just keeping up on your troubles, I can't imagine having to be the one that has followed through with all that you've done to that bike. When it is RIGHT, you will OWN that f.@&*%g bike!!!!!!! It will be done! \\:D/

Dave
Click to expand...

I just want to WIN.
 
hogie said:
2. The carbs haven't been cleaned.
Click to expand...

Your carbs need a professional dip, clean and rebuild. The #1 reason for ill running GS's (or any 25 year old bike).

Also check the inside walls of your fuel tank for rust. Rust sediment is the #2 reason for ill running GS carbs
 
When you finish the tuneup go to the homepage and look up the stator papers.

Dink
 
Thanks for the tips guys. I'm doing a thorough carb clean next weekend (Vols vs. LSU this weekend). Good place to start I'm sure!
 
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