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K & N Filter Restricting Flow?

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

Anonymous

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I just put a K & N Filter on my 81 GS850G. Weird, but when I accelerate hard the engine cuts out a little around 5500 RPM. If I back off the accelerator for a second and hit it again, the revs continue to climb and off I go. Also, the idle has jumped up to 2500-3000 RPM's, and continues to rise even if I back off the idle adjustment knob. Do I need to make adjustments to the carbs? Any help would be appreciated.
 
Interesting. Another member with an '81 850, says his K&N wouldn't allow his bike to run past 4,000 rpm.
See his post at "GS 850 stalling at idle".
 
Re: K & N Filter Restricting Flow?

dylpickle88 said:
I just put a K & N Filter on my 81 GS850G. Weird, but when I accelerate hard the engine cuts out a little around 5500 RPM. If I back off the accelerator for a second and hit it again, the revs continue to climb and off I go. Also, the idle has jumped up to 2500-3000 RPM's, and continues to rise even if I back off the idle adjustment knob. Do I need to make adjustments to the carbs? Any help would be appreciated.
Click to expand...
Sounds like an intake leak.
I wonder what would happen if you put the old filter back on?
 
That's what happened to me! No intake leaks. Try putting the old one back on or if you can't try it without the filter but with side panels back on, Do not run very long without filter just a short spin to get thru the gears and see how it acts. Get a foam filter for some reason this model likes it.
 
What I have found about K&N filters and GS's is that the amount of oil used on the filter has to be just right, to simulate the same amount of 'restriction' that a stock filter has.
 
I am having the same problem with the foam filter on my GS 650. I cleaned it and it still stumbles around 6k. I moppd off most of the filter oil, same problem. But without the filter it runs mint. I am reluctant to go back to the stock paper filter because the foam Uni one DID work once, I never owned the bike when it had a stock filter. Plus Suzuki wants $40+ for the filter :roll: Sounds like we're having similar problems, I will let you know if I find out anything, please keep us in the loop with yourself as well :D
 
One thing I did notice is that after changing air filters around is that the plugs would foul out, you can try to clean them, but your better off getting a new set. You would be amazed how fast they can foul out. Try it and see what happens.
 
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