acceleration flat spot

[thunderchief]

I have a 1997 GS500.  I bought it about a year ago with about 850 original miles on it.  The guy I bought it from was in his 70's, had a heart condition, and couldn't ride for years so the bike sat for years.  The carbs were absolutely trashed with varnish and the bike would idle but not accelerate worth a darn.  I had the carbs cleaned and rejetted to factory specs.  The bike now runs pretty well, but I have a slight flat spot at midrange.  Does anybody know if this is normal or do I still need some carb work?

[GI_JO_NATHAN]

I assume stock exhaust?!

[thunderchief]

The bike is 100% stock.

[beRto]

I have a 1997 GS500.  I bought it about a year ago with about 850 original miles on it.  The guy I bought it from was in his 70's, had a heart condition, and couldn't ride for years so the bike sat for years.  The carbs were absolutely trashed with varnish and the bike would idle but not accelerate worth a darn.  I had the carbs cleaned and rejetted to factory specs.   The bike now runs pretty well, but I have a slight flat spot at midrange.  Does anybody know if this is normal or do I still need some carb work?

The bike is 100% stock.

If it's stock, rejetting to stock seems redundant?

Any idea when the valves were last checked? Were the carbs ever balanced? In what condition is the air filter?

[ohgood]

I have a 1997 GS500.  I bought it about a year ago with about 850 original miles on it.  The guy I bought it from was in his 70's, had a heart condition, and couldn't ride for years so the bike sat for years.  The carbs were absolutely trashed with varnish and the bike would idle but not accelerate worth a darn.  I had the carbs cleaned and rejetted to factory specs.   The bike now runs pretty well, but I have a slight flat spot at midrange.  Does anybody know if this is normal or do I still need some carb work?

The bike is 100% stock.

If it's stock, rejetting to stock seems redundant?

Any idea when the valves were last checked? Were the carbs ever balanced? In what condition is the air filter?

I'd bet on the flat spot being just a typical lean condition, OR a float height problem. EIther one is easily fixed. Please try our search function for how to set the float height.



Rejetting away from stock can make things allot more linear and smooth through the throttle range.