Question about 1999 Suzuki GSX 600 F (Katana)

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99 suzuki katana 600 exhaust issue startup problem.. help..??

Hey Folks!
I've recently acquired a '99 Suzuki Katana 600, which I'm totally loving being on.. however, there's couple of things which do makes me a bit uncomfortable, and I can't help thinking of fixing them somehow..
just fyi.. I've recently got the Jets changed (replaced a new kit) with the fuel flowing richer than usual..
Now, for starters, I'm facing ignition / startup problems in the morning.. although it's cold here, but still it takes quite a while, and after starting the first time, the rpm gets lower and lower and ultimately the engine stops.. (even using choke)
Then comes the part where I have to throttle it a bit to start, and it gives out quite some smoke too..
Soon after it's up, I still get the engine cutting off on me at certain points, as if the exhaust is choked.. there's quite a lot of backfire pops from the exhaust.. and that continues for the whole time I ride it afterwards..

So, I hope you've got the scenario, and can guide me in the right direction.. :)

Thanks in advance..


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Try adjusting the idle adjustment screw. it should cut out the backfiring problem. i had the same problem and it helped me !!!

Posted on Feb 21, 2009

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Hi and welcome to FixYa,

Initially, pls re-check how the carbs were installed back with particular emphasis on:

  • the rubber coupling carb/manifold & the clamps;
  • the air box, how it is seated to the carb;
  • the air filter;
  • the vacuum hoses, carb balancer ports;
  • sorry to bring this up, could it be overjet?
Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 18, 2008

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