Question about 1999 Suzuki GSX 600 F (Katana)

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99 GSX600F idles badly, belches smoke

1999 GSX 600F runs badly.

When I first got it, it sounded like it was almost missing on one cylinder when idling, but was ok in the higher revs. As time went on it started being more of a problem, with the bike arbitrarily pulling then decelerating while riding. Also, on occasion, would produce clouds of smoke when started.

Dealer cleaned and balanced the carbs, and replaced the fuel valve and oil sump pan (to fix leaks). Total cost: Over £600. The bike was BETTER, but by no means fixed.

Now it's starting its antics once again. Last week it had no power at all while I was riding it, it sounded like it was only firing on 3 cylinders, and backfired while I was pulling away from the lights. It still eats oil and still occasionally produces clouds of smoke when starting. Could oil be leaking into a cylinder somehow?

Scared to take it back to the dealership, as £600 to not fix a problem is not very appealing. Any ideas?

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I think your right!! take your drain plug off and drain some oil out....look at it condition does it have small bubbles in it does it smell funny or look like a milk shake?
if it does you probably have a cracked cylinder wall.

Posted on Sep 16, 2009

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Posted on Jan 02, 2017

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