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83 GS 650G Bogs down on freeway

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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I have a 1983 GS650G that has run fine up till now. I recently replaced the stock air filter with indivual pod type filters. I took the motorcycle to a mechanic to get the carbs re-jetted. After a long trial and error process, which cost me $240.00, I got the bike back. It started easy and ran fine as I rode it back to my house. A week latter when I took the Suzuki on the freeway, I started to have trouble. At around 5000 RPM in 5th gear the bike begins to bog down. It almost feels like it running out of gas. If I give it full throttle it takes off and runs normally. I've noticed that cross winds seem to make the problem worst. After spending all that money, I would hate to go back to the stock air filter, Anyone have any ideas?

Dennis
 
It sounds as though it is slightly lean, getting the engine hot, and bogging down. pull and see what colour the plugs are. this is, of course, assuming that the floats are set correctly and the petcock is not malfunctioning by not allowing proper fuel flow. post back and let us know waht you have. :twisted:
 
Re: 83 GS 650G Bogs down on freeway

I would go up a size on the midrange jet.

Earl


dipsearacer said:
I have a 1983 GS650G that has run fine up till now. I recently replaced the stock air filter with indivual pod type filters. I took the motorcycle to a mechanic to get the carbs re-jetted. After a long trial and error process, which cost me $240.00, I got the bike back. It started easy and ran fine as I rode it back to my house. A week latter when I took the Suzuki on the freeway, I started to have trouble. At around 5000 RPM in 5th gear the bike begins to bog down. It almost feels like it running out of gas. If I give it full throttle it takes off and runs normally. I've noticed that cross winds seem to make the problem worst. After spending all that money, I would hate to go back to the stock air filter, Anyone have any ideas?

Dennis
Click to expand...
 
did you try adding a little choke when it starts to bog ?this would verify a lean needle.Mark
 
snofrog said:
did you try adding a little choke when it starts to bog ?this would verify a lean needle.Mark
Click to expand...

I had an identical problem with my bike, but with a stock airbox & stock carbs.

I was missing some airbox parts (like the lid), and running too lean because of too much airflow, hence not enough pressure, hence not enough fuel...

Prior to fixing it, I was able to get power back by riding with the choke partially on...
 
I believe what your had was not enough vacuum. That would be not enough negative pressure. :-) :-) :-)

Earl


Dave_A said:
I was missing some airbox parts (like the lid), and running too lean because of too much airflow, hence not enough pressure, hence not enough fuel...
Click to expand...
 
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